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BrianCunningham [article] T.P.I.S. builds a 396 LT1
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PEAK HORSEPOWER: 552@6,200
PEAK TORQUE: 484 FT.-LBS.@5,500

http://www.tpis.com/LT1-lowres.pdf
Posted on: 2008/11/21 3:45
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bogus Re: [article] T.P.I.S. builds a 396 LT1
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Impressive. I wonder how much it's gonna cost?

I guess someone was surfing the TPiS site tonite.
Posted on: 2008/11/21 5:41
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88BlackZ51 Re: [article] T.P.I.S. builds a 396 LT1
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i can't seem to get the article up. what cylinder heads, and cr are they using?
Posted on: 2008/11/21 11:53
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cuisinartvette Re: [article] T.P.I.S. builds a 396 LT1
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Print is very small and hard to read but looks like Lunati crank and pro mod rods, AFR 195s, TPIS ZZX cam??
Posted on: 2008/11/21 15:21
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mseven Re: [article] T.P.I.S. builds a 396 LT1
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Spalyed block w/oliver billet caps, lunati pro mod rods/crank, Diamond inverted dome slugs, 11.1:1 cr., zzx 239/239@50, approx .558 lift, 112 lsa, afr 195 eliminater 58cc., 1.7 comp cams "hi-tech" stainless, 58 tb., 36lb bosch III(white)..........it would have been nice to see the tq. number up a bit though.
Posted on: 2008/11/21 17:45
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BrianCunningham Re: [article] T.P.I.S. builds a 396 LT1
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I was looking for shortly headers for someone elses build.

I had a funny feeling....

Quote:

cuisinartvette wrote:
Print is very small and hard to read but looks like Lunati crank and pro mod rods, AFR 195s, TPIS ZZX cam??


It's a PDF. You should be able to expand it.

It might be easier to do a "save as" and open it separately.
Posted on: 2008/11/21 17:49
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88BlackZ51 Re: [article] T.P.I.S. builds a 396 LT1
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Quote:

mseven wrote:
Spalyed block w/oliver billet caps, lunati pro mod rods/crank, Diamond inverted dome slugs, 11.1:1 cr., zzx 239/239@50, approx .558 lift, 112 lsa, afr 195 eliminater 58cc., 1.7 comp cams "hi-tech" stainless, 58 tb., 36lb bosch III(white)..........it would have been nice to see the tq. number up a bit though.


I think the tq would of been higher if they went a little less duration. Looks like a nice package.

Are those the street ports are the comp ports? Not sure if AFR only makes comp ports for LTx.


Thanks!
Posted on: 2008/11/21 21:02
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88BlackZ51 Re: [article] T.P.I.S. builds a 396 LT1
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Quote:

cuisinartvette wrote:
Print is very small and hard to read but looks like Lunati crank and pro mod rods, AFR 195s, TPIS ZZX cam??


Yeah, Lunati isn't cheap stuff. I'd imagine it never hurts using a good crank.
Posted on: 2008/11/21 21:05
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jsup Re: [article] T.P.I.S. builds a 396 LT1
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Quote:

mseven wrote:
Spalyed block w/oliver billet caps, lunati pro mod rods/crank, Diamond inverted dome slugs, 11.1:1 cr., zzx 239/239@50, approx .558 lift, 112 lsa, afr 195 eliminater 58cc., 1.7 comp cams "hi-tech" stainless, 58 tb., 36lb bosch III(white)..........it would have been nice to see the tq. number up a bit though.


Ya know, with this spec, I don't see how I'm not over 600HP. more lift, more duration, more head, more displacement....The only thing I have less of is compression....and that isn't worth much...5-10hp for 1/2 point...

That's gotta be worth 50HP easy.

I should do the About 600 Club proud...

Course I didn't spring for the stainless rockers, wonder what that's gonna cost me.
Posted on: 2008/11/21 21:16
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mseven Re: [article] T.P.I.S. builds a 396 LT1
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Quote:

88BlackZ51 wrote:
I think the tq would of been higher if they went a little less duration. Looks like a nice package.
Are those the street ports are the comp ports? Not sure if AFR only makes comp ports for LTx. Thanks!

my money is on them using the comps....trying to get an HP number, and no mention of the afr, which makes me think leaned (13.50:1+)and then yeiding a slightly lowered tq. TPIS didn't pick the parts, Jim told me his choices would have probably started w/the 210 head and the rest being somewhat different. Still, a very good motor though
Posted on: 2008/11/21 21:30
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mseven Re: [article] T.P.I.S. builds a 396 LT1
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Quote:
jsup wrote:
Ya know, with this spec, I don't see how I'm not over 600HP. more lift, more duration, more head, more displacement....The only thing I have less of is compression....and that isn't worth much...5-10hp for 1/2 point...That's gotta be worth 50HP easy.
I should do the About 600 Club proud...
Course I didn't spring for the stainless rockers, wonder what that's gonna cost me.

the ss rockers are around 400.-500. now, they were more when they first came out. Difference in comparison to yours is not only weight but the increase to a 1.7 ratio.

As to your "about 600 club" I have no idea what that's all about. But, your motor should have more 550chp (I have reservations being over 600 though), but since you aren't a fan of dyno's, I guess you/we will never know.
Posted on: 2008/11/21 21:42
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jsup Re: [article] T.P.I.S. builds a 396 LT1
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I will dyno tune, so as a residual.... I don't live and die by them for many reasons. It's not important..like flow numbers that I don't know either, and there's a ton of variance which makes them suspect.

btw, nice to see you around.

About 600 Club:
http://www.corvette-guru.com/modules/ ... php?topic_id=6034&forum=6
Posted on: 2008/11/21 21:47
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BrianCunningham Re: [article] T.P.I.S. builds a 396 LT1
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Did you notice they use a stock LT1 intake with the AFR 195's?
Posted on: 2008/11/21 21:55
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jsup Re: [article] T.P.I.S. builds a 396 LT1
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Quote:

BrianCunningham wrote:
Did you notice they use a stock LT1 intake with the AFR 195's?


Surprised they didn't use the mini ram, since they make it. What is the implication as you see it?
Posted on: 2008/11/21 21:57
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mseven Re: [article] T.P.I.S. builds a 396 LT1
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Quote:

jsup wrote:
I will dyno tune, so as a residual.... I don't live and die by them for many reasons. btw, nice to see you around.
about 600 club:
http://www.corvette-guru.com/modules/ ... php?topic_id=6034&forum=6


understandable............in the day when I was at the track everyweek and was serious about this stuff, no-one (aside from chrysler R&D)had a dyno...so it didn't matter. This time around the dyno pulls were part of a total deal that I struck....it was nice, but for me it's a source of reference for the rest of car.
Never-the-less, I would rather use a chasis dyno for c.loop tuning (if I had the chance as opposed to my drive pull over and tweak method). I'll bet I could get a tune done way faster being able to hold it any rpm/load and tweak than my current method.

Likewise, so.....what have I missed, where are you w/yours ? tune going well w/greg ? etc....guessin' the weather there has got you parked as well
Posted on: 2008/11/21 22:03
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mseven Re: [article] T.P.I.S. builds a 396 LT1
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Quote:

BrianCunningham wrote: Did you notice they use a stock LT1 intake with the AFR 195's?

ok I'll bite why ?
the reality is because TPIS didn't pick the parts.
Posted on: 2008/11/21 22:10
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BrianCunningham Re: [article] T.P.I.S. builds a 396 LT1
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It means I can use that spare LT1 intake, so I don't need to go buy an LT4 or Edelbrock.

Yippee!!!
Posted on: 2008/11/21 22:11
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jsup Re: [article] T.P.I.S. builds a 396 LT1
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Quote:

mseven wrote:
Quote:

jsup wrote:
I will dyno tune, so as a residual.... I don't live and die by them for many reasons. btw, nice to see you around.
about 600 club:
http://www.corvette-guru.com/modules/ ... php?topic_id=6034&forum=6


understandable............in the day when I was at the track everyweek and was serious about this stuff, no-one (aside from chrysler R&D)had a dyno...so it didn't matter. This time around the dyno pulls were part of a total deal that I struck....it was nice, but for me it's a source of reference for the rest of car.
Never-the-less, I would rather use a chasis dyno for c.loop tuning (if I had the chance as opposed to my drive pull over and tweak method). I'll bet I could get a tune done way faster being able to hold it any rpm/load and tweak than my current method.

Likewise, so.....what have I missed, where are you w/yours ? tune going well w/greg ? etc....guessin' the weather there has got you parked as well


My trans shelved me for a bit:
http://www.corvette-guru.com/modules/ ... t_id=56068#forumpost56068

http://www.corvette-guru.com/modules/ ... t_id=57714#forumpost57714

http://www.corvette-guru.com/modules/ ... t_id=59263#forumpost59263

http://www.corvette-guru.com/modules/ ... t_id=59330#forumpost59330

Finally:

http://www.corvette-guru.com/modules/ ... t_id=59502#forumpost59502

I will have the new trans installed first week of dec. We will continue the tune after that. Shooting for a dyno tune in the spring, weather permitting.

As long as there is no snow on the ground, we can tune. We can tweak it in the spring.
Posted on: 2008/11/21 22:12
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jsup Re: [article] T.P.I.S. builds a 396 LT1
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Quote:

BrianCunningham wrote:
It means I can use that spare LT1 intake, so I don't need to go buy an LT4 or Edelbrock.

Yippee!!!


I miss the connection.

Is you combination the same, and do you want the same results?

Maybe TPIS would have done it differently. Who did pick the parts?
Posted on: 2008/11/21 22:26
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jsup Re: [article] T.P.I.S. builds a 396 LT1
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Quote:

mseven wrote:

the reality is because TPIS didn't pick the parts.


Who did? Is this a ringer motor?
Posted on: 2008/11/21 22:28
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BrianCunningham Re: [article] T.P.I.S. builds a 396 LT1
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I'm running a blower remember?
Posted on: 2008/11/21 22:34
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jsup Re: [article] T.P.I.S. builds a 396 LT1
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Quote:

BrianCunningham wrote:
I'm running a blower remember?


Right, so the intake and heads have even less effect than without. Therefore if the stock one works without a blower, it will still work with it. Got it.

It's the 12 Percacet a day that's getting to me, I'm a little slow.
Posted on: 2008/11/21 22:37
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BrianCunningham Re: [article] T.P.I.S. builds a 396 LT1
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you need a 13th.

I wanted to know if they would physically fit

Looks good.

It's also a nice combo that people on the forum are interested.
Posted on: 2008/11/21 22:42
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mseven Re: [article] T.P.I.S. builds a 396 LT1
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It was from the magazine (editors?), of Street Thunder:

"After choosing the necessary components
for our project 396 LT1, we worked with
TPIS/Cottrell Racing Engines to assemble,
dyno, and tune the engine. Combining
our research and TPIS’ LT1 experience
was sure to produce exceptional results"

"We didn’t use the most expensive
parts to achieve the highest power
figures; instead, we built a high performance
engine that walks the line between
street and race, but thatwould be at home
under the hood of most any street machine,
whether an early street rod or a latemodel
sports car. Not only that, but our
LT1 creation should easily achieve over 20
mpg on the highway in our six-speed
equipped ’85Camaro!That’s hard to beat."
Posted on: 2008/11/21 22:44
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jsup Re: [article] T.P.I.S. builds a 396 LT1
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Quote:

BrianCunningham wrote:
you need a 13th.

I wanted to know if they would physically fit

Looks good.

It's also a nice combo that people on the forum are interested.


13, 14, 20 you sound like my wife...
Posted on: 2008/11/21 22:46
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jsup Re: [article] T.P.I.S. builds a 396 LT1
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Quote:

mseven wrote:
It was from the magazine (editors?), of Street Thunder:

"After choosing the necessary components
for our project 396 LT1, we worked with
TPIS/Cottrell Racing Engines to assemble,
dyno, and tune the engine. Combining
our research and TPIS’ LT1 experience
was sure to produce exceptional results"

"We didn’t use the most expensive
parts to achieve the highest power
figures; instead, we built a high performance
engine that walks the line between
street and race, but thatwould be at home
under the hood of most any street machine,
whether an early street rod or a latemodel
sports car. Not only that, but our
LT1 creation should easily achieve over 20
mpg on the highway in our six-speed
equipped ’85Camaro!That’s hard to beat."


Nice work then. It seems the LTX platform has been hard to mod, maybe it's getting easier with new offerings. Hope so. I got an L98 because I was afraid of the LTX...my last vette was an L48.
Posted on: 2008/11/21 22:49
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BeachBum Re: [article] T.P.I.S. builds a 396 LT1
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Quote:

BrianCunningham wrote:
PEAK HORSEPOWER: 552@6,200
PEAK TORQUE: 484 FT.-LBS.@5,500

http://www.tpis.com/LT1-lowres.pdf


Thanks for sharing Brian !

Torque is good too, I know some will look at it as a low number, but when you consider this is a motor based upon a 4" bore that is cammed to make its HP peak above 6k, 480 ftlbs is pretty solid. Easy low 11's in a C4 with that motor, and even into the 10's.

It is an interesting combination.... I've seen the ZZX cam on several different builds and was seriously considering early in my build, but passed on it.
Posted on: 2008/11/21 22:55
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mseven Re: [article] T.P.I.S. builds a 396 LT1
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Quote:
BeachBum wrote: Torque is good too, I know some will look at it as a low number, but when you consider this is a motor based upon a 4" bore that is cammed to make its HP peak above 6k, 480 ftlbs is pretty solid. Easy low 11's in a C4 with that motor, and even into the 10's. It is an interesting combination.... I've seen the ZZX cam on several different builds and was seriously considering early in my build, but passed on it.


No there's nothing wrong with the tq. I look at various feature builds and feel most like seeing hp. They also stated they did 3 pulls, so it appears they didn't go too hog nuts tuning. What software are you using to do et.calculations ?
The zzx seems to produce good results, but after valve lash it's probably down to 235ish. I'm becoming more of a believer that at that point in hr.'s, the 242/242 solid becomes a good choice.
Posted on: 2008/11/21 23:29
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BeachBum Re: [article] T.P.I.S. builds a 396 LT1
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Quote:

mseven wrote:
No there's nothing wrong with the tq. I look at various feature builds and feel most like seeing hp. They also stated they did 3 pulls, so it appears they didn't go too hog nuts tuning. What software are you using to do et.calculations ?
The zzx seems to produce good results, but after valve lash it's probably down to 235ish. I'm becoming more of a believer that at that point in hr.'s, the 242/242 solid becomes a good choice.


I didn't calculate the et, but I know from experience, that type of power is capable of 10 second et's provided the converter/gearing/tires are up for the task....probably not very deep 10's though.

I do have a dragstrip set-up simulator I believe in....
Posted on: 2008/11/22 0:39
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jsup Re: [article] T.P.I.S. builds a 396 LT1
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Quote:

mseven wrote:
the ss rockers are around 400.-500. now, they were more when they first came out. Difference in comparison to yours is not only weight but the increase to a 1.7 ratio.


OK, stupid question....honest question however....

You're saying the weight of the stainless is less than the Chrome Molly I have? By how much and what is that worth 5HP? I can't find a spec that they are lighter than the chro mo I have, Comp doesn't say that, summit doesn't say that. Not so sure they are. In fact, the chro mo are more expensive and I believe lighter than stainless. So +5 if that's the case?

As far as the 1.7, why would that make a difference? The overall lift is still .558. I'm running .602 with smaller rockers. I am not sure how you think the 1.7s make much difference on that cam.

Then, we have to look at the cam profile, no? The 1.7 will ramp the cam sooner given it's the same profile and ramp on each cam. Right?

Without knowing the profile and ramp for each, it would be impossible to conclude, no?

What we do know is that I have overall more lift and more overall duration, despite the 1.7s on this motor. Therefore we can conclude that my cam ramps faster, we just don't know by how much.

Quote:

But, your motor should have more 550chp (I have reservations being over 600 though), but since you aren't a fan of dyno's, I guess you/we will never know.


I would completely expect that I would have more power, because on paper there's no other conclusion. The only difference is, I don't have "forum approved" parts...which is exactly where the term "About 600 Club" came from.

People would post something like this motor and insist it would make more power than another, more robust, setup, like mine in this example. I don't get it or see how you come to the conclusion. I'm not even saying you're wrong, on paper it doesn't add up.

Let me repeat, I have more displacment, more cam, more intake, more head, similar compression, yet your predicting similar numbers. To me, doesn't fly, please explain, why is that?
Posted on: 2008/11/22 1:29
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mseven Re: [article] T.P.I.S. builds a 396 LT1
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jsup wrote:Quote:

OK, stupid question....honest question however....
You're saying the weight of the stainless is less than the Chrome Molly I have? By how much and what is that worth 5HP? I can't find a spec that they are lighter than the chro mo I have, Comp doesn't say that, summit doesn't say that. Not so sure they are. In fact, the chro mo are more expensive and I believe lighter than stainless. So +5 if that's the case?
As far as the 1.7, why would that make a difference? The overall lift is still .558. I'm running .602 with smaller rockers. I am not sure how you think the 1.7s make much difference on that cam.
Then, we have to look at the cam profile, no? The 1.7 will ramp the cam sooner given it's the same profile and ramp on each cam. Right? Without knowing the profile and ramp for each, it would be impossible to conclude, no?
What we do know is that I have overall more lift and more overall duration, despite the 1.7s on this motor. Therefore we can conclude that my cam ramps faster, we just don't know by how much.

when comp first released that rocker it there statement regarding less recipricating weight and strength, however, as I said, IMO, it would not be weight that would effect/increase your perfromance but the change in ratio (you stated "how much is this going to cost me").
http://www.compcams.com/information/P ... rArms/HiTechStainless.asp
The zzx is .558 gross lift w/a 1.5:1, using the 1.7:1 raises the lift to .632.
On your motor if the cam you have was rated at .602 w/a 1.5, changing to the 1.6:1 puts it at .642.lift., using a 1.7 would put it at .682 lift.
Again if yours started at .602 lift rated w/a 1.6 the change to a 1.7:1 would bring it to .640....altering ratio, not weight would be the gain.
Quote:

People would post something like this motor and insist it would make more power than another, more robust, setup, like mine in this example.I don't get it or see how you come to the conclusion. I'm not even saying you're wrong, on paper it doesn't add up.

first off, let me be clear, I am talking about ratio changes on any motor. I am not coming to any conclusions, comparisons or the like....on their motor, mine or yours....don't even try it.
I don't make any assumptions on paper or otherwise without all the facts. Have I said anything to give you the idea that it needed to be any certain way to make good power?
Posted on: 2008/11/22 4:43
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BrianCunningham Re: [article] T.P.I.S. builds a 396 LT1
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Bogus,
Thanks for unlocking this thread.

I just wanted to add this useful piece of information for those interested in this particular build.

[QUOTE]rklessdriver:Brian,
Here is the pic from Nolands engine thread.

This is a Fel Pro stock replacement LT1 gasket (PN1284) up to his AFR 195 Comp Ports . I actually used this Fel Pro LT1 gasket (added just <.060 to the roof) to port match his LT4 intake and when we put it on the motor the port alignment was perfect.

[IMG]http://i304.photobucket.com/albums/nn162/BlackHarleyMan/96%20Vette/383%20Build/DSC00971.jpg[/IMG]


We then put the GM "LT4 Off Road" gasket (777) up to them to show the difference.

[IMG]http://i304.photobucket.com/albums/nn162/BlackHarleyMan/96%20Vette/383%20Build/DSC00973.jpg[/IMG]

Now in the end since Noland had an LT4 intake which has more sealing surface above the intake port I just used the GM LT4 777 gasket for assy. It expidited assy (no gasket trimming) and Noland didn't seem to keen on me taking a pocket knife to his brand new gaskets if I didn't have to...

Another option is SCE, which has a few different LTX gaskets (that have different port heights) and you could get one that didn't require any trimming on the 195's. I had to go with SCE intake gaskets on my 210's.

Reguardless LT1 intake and gaskets on the 195 Comp Ports is easily done.
Will[/QUOTE]
Posted on: 2008/11/23 18:49
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VETTHRET Re: [article] T.P.I.S. builds a 396 LT1
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Quote:

jsup wrote:


Let me repeat, more head,


More head? Why, cause your ports are bigger?

More cam? You have more exhaust duration and 1 degree more of intake duration. That cam with 1.7s specs out to .632 lift.

They should have made more power but as you can see, they're hitting some valve control issues at 6200RPM. Had they solved the float they would have hit 575HP at 6500RPM.
Posted on: 2008/11/25 17:22
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jsup Re: [article] T.P.I.S. builds a 396 LT1
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Quote:

mseven wrote:
when comp first released that rocker it there statement regarding less recipricating weight and strength, however, as I said, IMO, it would not be weight that would effect/increase your perfromance but the change in ratio (you stated "how much is this going to cost me").
http://www.compcams.com/information/P ... rArms/HiTechStainless.asp
The zzx is .558 gross lift w/a 1.5:1, using the 1.7:1 raises the lift to .632.
On your motor if the cam you have was rated at .602 w/a 1.5, changing to the 1.6:1 puts it at .642.lift., using a 1.7 would put it at .682 lift.
Again if yours started at .602 lift rated w/a 1.6 the change to a 1.7:1 would bring it to .640....altering ratio, not weight would be the gain.


Thanks mseven. I screwed up, I thought the .558 was total lift with the rockers considered. My error.


Quote:

first off, let me be clear, I am talking about ratio changes on any motor. I am not coming to any conclusions, comparisons or the like....on their motor, mine or yours....don't even try it.


I wasn't addressing you, I was speaking in general terms.
Quote:

I don't make any assumptions on paper or otherwise without all the facts. Have I said anything to give you the idea that it needed to be any certain way to make good power?


You haven't. Others have.
Posted on: 2008/11/25 20:13
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BrianCunningham Re: [article] T.P.I.S. builds a 396 LT1
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WOW I guess I'll just have to bore my engine out to 420+ci

Oh wait! I can't!
Posted on: 2008/11/25 21:00
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Polo Green 95 LT1 6-spd http://mysite.verizon.net/vzevcp74/
383 LT1/Vortech Supercharger/AFR heads/Rod end suspension/Penske-Hardbar dual rate coilovers/Wilwood 6pot brakes
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mseven Re: [article] T.P.I.S. builds a 396 LT1
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Quote:

jsup wrote:
Thanks mseven. I screwed up, I thought the .558 was total lift with the rockers considered. My error.

you're welcome, and no prob.
Quote:

mseven wrote:
first off, let me be clear, I am talking about ratio changes on any motor. I am not coming to any conclusions, comparisons or the like....on their motor, mine or yours....don't even try it. I don't make any assumptions on paper or otherwise without all the facts. Have I said anything to give you the idea that it needed to be any certain way to make good power?

Quote:

jsup wrote:
I wasn't addressing you, I was speaking in general terms......You haven't. Others have.

I guess I took it wrong and thought that was aimed towards me, in that case my appologies.
Posted on: 2008/11/26 3:50
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bogus Re: [article] T.P.I.S. builds a 396 LT1
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I have just cleaned this thread and unlocked it.

No more warnings, children.
Posted on: 2008/11/28 0:06
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Education is the best tool to overcome irrational fear. - me

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BrianCunningham Re: [article] T.P.I.S. builds a 396 LT1
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Thank you
Posted on: 2008/11/28 0:14
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Polo Green 95 LT1 6-spd http://mysite.verizon.net/vzevcp74/
383 LT1/Vortech Supercharger/AFR heads/Rod end suspension/Penske-Hardbar dual rate coilovers/Wilwood 6pot brakes
NCCC Governor: http://BayStateCorvetteClub.com
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