|
Register To Post |
biggrizzly | Flow numbers for the armchair racer in all of us | ||
2011 Memorial Day Car Show Winner!
|
Ok - here are a few numbers for the number guys in all of us. I'm pretty happy with all of this and I plan to feed it into my little desktop dyno and see what it brings me.
These numbers for an LT1 stroked 383 Cylinder Head Flow Numbers Factory LT1 heads with Manley 2.05 intake valves 1.xx exhaust Intake/Exhaust 100 lift 62/61 200 lift 130/112 300 lift 178/160 400 lift 226/192 500 lift 259/208 550 lift 270/213 600 lift 271/217 Cam Specs Duration 224/230 Lobe separation 113.0 Valve lift .566/.577 with 1.6 rockers |
||
Posted on: 2011/3/25 19:51
|
|||
_________________
Don Haller Corvette Club of America 94Coupe, 383Stroka, PeteK Trans, 3000stall, 3.54rear, Konis and bigger sways. |
|||
Transfer |
PeteK | Re: Flow numbers for the armchair racer in all of us | ||
Moderator
|
Looks like he spent time to pick the right cam.
It should compliment the compression ratio and cylinder head very well. |
||
Posted on: 2011/3/25 21:39
|
|||
_________________
"It was really on a pass until it came apart." "Yeah. They always are." |
|||
Transfer |
biggrizzly | Re: Flow numbers for the armchair racer in all of us | ||
2011 Memorial Day Car Show Winner!
|
I think that Jerry Jackson is fairly conservative when he is building a street engine for a customer. I have seen guys here with a lot more lift and more overlap but I think this combination will be smooth running and easy for Mick to create a tune.
He did improve the flow characteristics of the heads from what I got from LE. Probably the difference between a LE2 and LE3 port job. I'll tell you.... I paid for that little bit of improvement!!! Flow at .550 lift went from a baseline of 258 to 270 and from 262 at .600 lift to 271 Of course this is all on paper. Also the bigger valves and the de-shrouding of the valves gave those improvements. |
||
Posted on: 2011/3/25 23:05
|
|||
_________________
Don Haller Corvette Club of America 94Coupe, 383Stroka, PeteK Trans, 3000stall, 3.54rear, Konis and bigger sways. |
|||
Transfer |
PeteK | Re: Flow numbers for the armchair racer in all of us | ||
Moderator
|
Quote:
Bigger is not always better. On a street car, I think you have a damned good, well rounded combo. Very similar numbers I would look for on my own builds. My stuff often runs faster than the bigger combo's with the same cubes. Well matched is the key. |
||
Posted on: 2011/3/25 23:27
|
|||
_________________
"It was really on a pass until it came apart." "Yeah. They always are." |
|||
Transfer |
pr0zac | Re: Flow numbers for the armchair racer in all of us | ||
Elite Guru
|
i agree with pete. i think it will be a great street car. depending on if your stall is in line with how you drive it could make it even better.. but its all on what you want out of it.
|
||
Posted on: 2011/3/26 0:52
|
|||
_________________
96 lt4. 357ci, 11:1, LE 226/232, LE2 LT4 heads, ported LT4 intake, EM Gladiator44, EM LT's, stock exhaust, NX kit. |
|||
Transfer |
biggrizzly | Re: Flow numbers for the armchair racer in all of us | ||
2011 Memorial Day Car Show Winner!
|
Quote:
I'm using the same converter that Pete set up for me before. It's a 3,000 stall 9.5" converter. I think it should work pretty good with my 383 setup. The 3,000 stall converter worked great before. I didn't have any issues with the way the car drove under normal operating conditions. At the track it really stoked the launch but when driving to the grocery store it behaved quite docile. |
||
Posted on: 2011/3/26 1:13
|
|||
_________________
Don Haller Corvette Club of America 94Coupe, 383Stroka, PeteK Trans, 3000stall, 3.54rear, Konis and bigger sways. |
|||
Transfer |
Matatk | Re: Flow numbers for the armchair racer in all of us | ||
Webmaster
|
Sounds like 600 hp to me
|
||
Posted on: 2011/3/26 1:52
|
|||
_________________
2002 EBM convertible, Magnusson supercharger, cam, headers, etc. 1989 Corvette...RIP |
|||
Transfer |
biggrizzly | Re: Flow numbers for the armchair racer in all of us | ||
2011 Memorial Day Car Show Winner!
|
Quote:
Oh No! Is that you JSUP! |
||
Posted on: 2011/3/26 2:55
|
|||
_________________
Don Haller Corvette Club of America 94Coupe, 383Stroka, PeteK Trans, 3000stall, 3.54rear, Konis and bigger sways. |
|||
Transfer |
Stl94LT1 | Re: Flow numbers for the armchair racer in all of us | ||
Guru Newb
|
Wow, that's the largest valves I've seen in a stock LT1 casting.
|
||
Posted on: 2011/3/26 14:07
|
|||
_________________
|
|||
Transfer |
pr0zac | Re: Flow numbers for the armchair racer in all of us | ||
Elite Guru
|
LE3 lt1 heads use 2.055 valves.
|
||
Posted on: 2011/3/26 16:30
|
|||
_________________
96 lt4. 357ci, 11:1, LE 226/232, LE2 LT4 heads, ported LT4 intake, EM Gladiator44, EM LT's, stock exhaust, NX kit. |
|||
Transfer |
biggrizzly | Re: Flow numbers for the armchair racer in all of us | ||
2011 Memorial Day Car Show Winner!
|
Yes... 2.05 intake, but I did screw up on the exhaust valve and I can't remember what Jerry said he put in there. Might be 1.58 or something like that... I know its not 1.95" like I had originally said above.
|
||
Posted on: 2011/3/26 17:23
|
|||
_________________
Don Haller Corvette Club of America 94Coupe, 383Stroka, PeteK Trans, 3000stall, 3.54rear, Konis and bigger sways. |
|||
Transfer |
pr0zac | Re: Flow numbers for the armchair racer in all of us | ||
Elite Guru
|
1.56?
|
||
Posted on: 2011/3/26 17:31
|
|||
_________________
96 lt4. 357ci, 11:1, LE 226/232, LE2 LT4 heads, ported LT4 intake, EM Gladiator44, EM LT's, stock exhaust, NX kit. |
|||
Transfer |
biggrizzly | Re: Flow numbers for the armchair racer in all of us | ||
2011 Memorial Day Car Show Winner!
|
Quote:
1.56 sounds right, but Jerry didn't put the exhaust valve diam. on the flow sheet, just the intake valves. Which I knew because he called me and told me that he ordered the 2.05 valves since they were the same price as the 2.00 valves. This whole thing got started when we found excessive wear to the installed valve guides and one of the 2.0" original valves had cracked. Also, Jerry was pissing and moaning about the crappy port job on the heads. So, I broke down and told him to go ahead and re-do the heads. I was just going to have him replace the guides and the one bad valve but again he didn't care for the Ferrea valves that were installed. So I told him to go ahead and put all new Manley valves instead. He did a baseline flow before and after which showed some good gains in flow over the previous LE2 port work. Plus he had to do some more un-shrouding of the valves to accommodate the larger intake holes. He even went so far as to chamfer the cylinders to allow the gasses to smoothly pass over the ridge created by the cylinder edge at the combustion chamber top. |
||
Posted on: 2011/3/26 17:53
|
|||
_________________
Don Haller Corvette Club of America 94Coupe, 383Stroka, PeteK Trans, 3000stall, 3.54rear, Konis and bigger sways. |
|||
Transfer |
Stl94LT1 | Re: Flow numbers for the armchair racer in all of us | ||
Guru Newb
|
OK, the 1.95 exhaust valve was throwing me off.
|
||
Posted on: 2011/3/26 18:32
|
|||
_________________
|
|||
Transfer |
You can view topic.
You cannot start a new topic.
You cannot reply to posts.
You cannot edit your posts.
You cannot delete your posts.
You cannot add new polls.
You cannot vote in polls.
You cannot attach files to posts.
You cannot post without approval.
|