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| bogus | Another L98 Intake Option? | ||
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Grand Imperial Pooh-Bah
 
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I don't know for sure, but...
http://www.summitracing.com/parts/EDL-7137/ might just work for the L98 folks. At $420.00 it might be a damned good deal, too. The only rub, for those that care, no EGR... so it's not 50 state. oh, it's 9" high. |
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Posted on: 2011/5/26 7:23
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| sliding | Re: Another L98 Intake Option? | ||
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Senior Guru
 
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What is stock TPI height?
How do you guys think this would compare with superram on my engine? - 350 2 bolt block, overbored 0.020" - zero decked - 11.2:1 CR - stock crank - SCAT forged rods 5.7" - SRP forged pistons, flat-top - #113 heads, ported, 2.02/1.60 valves - ported superram - #24 FMS injectors - Hooker LT headers - CC XR288HR cam, 288/294 adv., 236/242 @.050", .55"/.57" lift, 110 LSA |
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Posted on: 2011/5/26 11:00
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'90 L98 auto with a lot of mods |
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| Ultraman | Re: Another L98 Intake Option? | ||
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Since I am doing my top end next year that might just work. I will call them with some questions. What about the throttle body? They recommend a 90mm but that is way to big for my application don't you think? Then there is the linkage hook up for the throttle I am sure they have that covered........its worth checking out.
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Posted on: 2011/5/26 11:05
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| Ultraman | Re: Another L98 Intake Option? | ||
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Quote:
Height may be an issue. Max height stock TPI height is about 8 inches as far as I can tell. I don't know how much wiggle room there is under the hood. I am sure its tight. |
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Posted on: 2011/5/26 11:14
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| Matatk | Re: Another L98 Intake Option? | ||
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Webmaster
 
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I don't think that fits under the stock hood. Plus you need to add fuel rails and a throttle body, so the price jumps way up.
Matthew |
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Posted on: 2011/5/26 11:42
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| flyboy | Re: Another L98 Intake Option? | ||
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Elite Guru
 
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Evidently it does clear the hood, barely.
http://www.vetteweb.com/tech/vemp_101 ... t_intake/tpi_harness.html |
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Posted on: 2011/5/26 14:47
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| sliding | Re: Another L98 Intake Option? | ||
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Thanks for that link. It's really tempting.
I believe that with my cam, I would see even more gain than in that test. And I could get almost all the funds back with selling the SR. Hmmmmm |
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Posted on: 2011/5/26 17:48
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'90 L98 auto with a lot of mods |
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| rklessdriver | Re: Another L98 Intake Option? | ||
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If your going to convert TPI to a better manifold, IMO there is no better option than these.
http://www.summitracing.com/parts/EDL-29785 http://www.racerswholesale.com/product.cfm?InvKey=45157 With a small elbow they will clear stock hood no problem and factory linkage works, run any type of TB.... possibilities are endless and you go as mild or wild as you want because the intake desgin when used in a dry EFI application is suited to anything. Will |
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Posted on: 2011/5/26 21:12
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1984 Corvette. 434 SBC with a Powerglide. Best pass - 8.48@160MPH 1.23 60ft on MT 275/60R15 Radials. 1972 Corvette. LS5 454 BBC with M20 4 speed. Best Pass - Doing good to just pass a gas station. |
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| rklessdriver | Re: Another L98 Intake Option? | ||
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9" off the china rail in the front (TB) is max height and will give the TB about 1/4" clearance on the hood. There is about 3/4" more height at the rear china rail. Will |
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Posted on: 2011/5/26 21:19
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1984 Corvette. 434 SBC with a Powerglide. Best pass - 8.48@160MPH 1.23 60ft on MT 275/60R15 Radials. 1972 Corvette. LS5 454 BBC with M20 4 speed. Best Pass - Doing good to just pass a gas station. |
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| Matatk | Re: Another L98 Intake Option? | ||
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Even though the PP manifold rpm range is 3000-7500 and the edelbrock is 4500-8500? |
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Posted on: 2011/5/26 22:22
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| rklessdriver | Re: Another L98 Intake Option? | ||
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Quote:
Yep. Things work a little differently when there isn't a carb perched on top dumping the fuel/air charge. Consider an LTX manifold has 3" long runner and a pretty big rectangular box plenum attached. These single plane intakes have 6-7" long runners and square box plenum about half the volume of an LTX manifold. Now you need to take into consideration that your going to roughly double the plenum volume with the TB adapter/elbow but when you take known performance charateristics of the LTX manifold, Super Ram, Stealth Ram and compare to the modified Single Plane you'll see it's capable of doing all of those jobs well. Decent bottom end (long runners that keep air speed up), massive mid range punch (long runners coupled with big plenum volume) and good top end power (big cross sectional area of the runners that are not an airflow restriction). Plus your feeding all the cyls from a common plenum located in the center of the runners. Great air distribution. No problems with air speed and intake signal being diffeent from port to port. It isn't going to shine in a stock L98 anymore than anything other than a TPI is going to.... But if your building a 400HP or better engine and going to spin it 6000RPM or better a good Single Plane intake it where it's at. Will |
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Posted on: 2011/5/27 1:05
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1984 Corvette. 434 SBC with a Powerglide. Best pass - 8.48@160MPH 1.23 60ft on MT 275/60R15 Radials. 1972 Corvette. LS5 454 BBC with M20 4 speed. Best Pass - Doing good to just pass a gas station. |
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| bogus | Re: Another L98 Intake Option? | ||
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Yea, you are right, that would rock. Just sucks for me in CA... oh, well. |
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Posted on: 2011/5/28 0:52
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The single biggest problem with communication is the illusion that it has taken place. - George Bernard Shaw Education is the best tool to overcome irrational fear. - me |
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| Matatk | Re: Another L98 Intake Option? | ||
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Awesome advice, Will. I didn't realize the characteristics would change that much. But I wonder how much custom work would be involved with fuel rails, etc.
I'd be willing to go that route if the custom fab work wasn't too much. I think my cam is an 1800-6200 range in the 383. I just have a feeling my LTR setup is hurting me on the top end. Matthew |
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Posted on: 2011/5/28 2:16
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2002 EBM convertible, Magnusson supercharger, cam, headers, etc. 1989 Corvette...RIP |
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| rklessdriver | Re: Another L98 Intake Option? | ||
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Quote:
It would definatly roll on a 383 with decent cam and that powerband. Both companies make direct fit fuel rails for it. You'll need the Aeromotive fuel pressure regulator, some AN fittings and -8 AN lines. The hook up to the stock fuel lines is 2 AN to NPT adapters you install down on the frame rail where the fuel filter is - Which is how I did mine. Your going to need a fabricated TB adapter. If you can't weld one up from sheet alum like I did your going to have to contact that dude from intakeelbows.com or 999 racing or something. I'm not sure what they cost. Now if you want to convert to a LSX TB (and boy do I wish I went this route)... Eldebrock makes a couple of cast alum elbows that will work fine and the availiable different TB choices are endless. It won't be the cheapest thing in the world but heck what did all that TPI stuff cost and what are Super Rams going for now?? That Pro Flow is the same deal when it's all said and done as far fuelr rails, fuel lines, new TB and stuff... Mini Ram and Stealth Ram are about the same boat, it's just that a big number of folks have alread done them and have everything needed to convert documented a few times over - Where as I'm one of the very few people actually running a Single Plane and then people look at my engine and other mods and say OH thats race only stuff..... and write it off the option list. Will |
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Posted on: 2011/5/28 3:00
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1984 Corvette. 434 SBC with a Powerglide. Best pass - 8.48@160MPH 1.23 60ft on MT 275/60R15 Radials. 1972 Corvette. LS5 454 BBC with M20 4 speed. Best Pass - Doing good to just pass a gas station. |
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| Matatk | Re: Another L98 Intake Option? | ||
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Soooo...
Edelbrock intake $335 http://www.summitracing.com/parts/EDL-29785 Edlebrock fuel rail $86 http://www.summitracing.com/parts/EDL ... /Application/?prefilter=1 Edelbrock elbow $115 (low pro?) http://www.summitracing.com/parts/EDL-3847/ Fuel pressure regulator $127 http://www.summitracing.com/parts/AEI-13301/ Used LS TB - $50 on ebay Fuel lines - 100? Gaskets - $30 Misc - $50? So maybe around $900 for everything? My only question then would be the linkage for the throttle body. On the edelbrock elbow the bracket mounts are on the passenger side, which is obviously opposite. And aren't they drive by wire? What about cruise, etc? How about IAC and TPS sensors? I think there are some wiring adapter kits for those. Any other thoughts? Matthew |
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Posted on: 2011/5/28 11:35
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2002 EBM convertible, Magnusson supercharger, cam, headers, etc. 1989 Corvette...RIP |
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| Matatk | Re: Another L98 Intake Option? | ||
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Another thought. I wonder if edelbrock would be willing to put a C4 package together??? Intake, elbow, tb, fuel rail, etc. I don't see why they wouldn't. People like to buy things in a simple package they can just slap on.
Matthew |
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Posted on: 2011/5/28 11:36
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| Ultraman | Re: Another L98 Intake Option? | ||
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Yeah, good idea Matt! I want someone else to do the R & D and all I have to do is bolt it on and go faster. I would like someone to make a kit for a drop in LS3 now that would be cool.
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Posted on: 2011/5/28 13:31
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| Matatk | Re: Another L98 Intake Option? | ||
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I would be willing to contact Edelbrock and talk to their R&D department about that. |
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Posted on: 2011/5/28 14:44
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| rklessdriver | Re: Another L98 Intake Option? | ||
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Quote:
You have the big stuff (Intake, fuel rails, FP regulator, TB adapter) but I think your underestimating the lines and fittings. I went and took inventory of everything I used on my car as far as fittings and lines. I used all Aeroquip lines and fittings... you could do it cheaper with Russel (which would be good) or even cheaper using some of the off brands but I've always been really scared of fire. (15ft) -6AN fuel line. http://www.summitracing.com/parts/AER-FCA0615/ You'll have a little left over but judging from how I ran my lines 10ft isn't quite enough. (4) 90* -6 AN swivel fittings/hose ends. http://www.summitracing.com/parts/AER-FBM4032/ (2) straight -6 AN swivel fittings/hose ends. http://www.summitracing.com/parts/AER-FBM1012/ These are hose ends for the feed, return and crossover lines. (4) 3/8 NTP to -6AN adpters. http://www.summitracing.com/parts/AER-FBM2005/ These are for the fuel rals to AN feed. return and crossover lines). (1) 3/8NTP to 3/8NTP straight male fitting. http://www.summitracing.com/parts/AER-FBM2134/ This is for installing the fuel pressure regulator on the back of the fuel rail. (2) -6 AN to 16X1.5mm O-Ring metric fuel line adapter fittings. http://www.summitracing.com/parts/AER-FBM2608/ These are for hooking the AN lines up to the fuel filter and return lines on the car. On the TB. My 2003 Avalanche has a 5.3L LSx in it and uses a cable.... I think only Vettes use drive by wire so look for a a 5.3L or 6.0L truck/SUV TB. Compared to assembling and figuring out all this AN hose and adapter stuff, The throttle cable deal would be pretty easy. The stock cable on my 92 has plenty of slack/room to be moved over to the passenger side. Will |
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Posted on: 2011/5/28 15:33
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1984 Corvette. 434 SBC with a Powerglide. Best pass - 8.48@160MPH 1.23 60ft on MT 275/60R15 Radials. 1972 Corvette. LS5 454 BBC with M20 4 speed. Best Pass - Doing good to just pass a gas station. |
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| Ultraman | Re: Another L98 Intake Option? | ||
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2015 Memorial Day Car Show Winner!
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Good stuff Will! Thanks for all your input.
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Posted on: 2011/5/29 0:03
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| bogus | Re: Another L98 Intake Option? | ||
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Grand Imperial Pooh-Bah
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Another thought... I wonder how much of this stuff can be bought on the used market?
And putting together a C4 package for the L83 and L98 wouldn't be a bad idea. I wonder how hard it would be to retrofit to an L83? Consider this: The entire Holley Commander 950, set up with a similar manifold, but with a 4bbl TB, costs 3300. Now, this is for Vortec, but I don't see a real stretch, $834: http://www.summitracing.com/parts/EDL-29783/?rtype=10 Now, if they could do a kit, that would allow the use of the stock brains, but the aftermarket hardware, this might work. The only problem - tuning that damned brain. http://www.summitracing.com/parts/HLY-92105211/ |
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Posted on: 2011/5/29 0:28
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The single biggest problem with communication is the illusion that it has taken place. - George Bernard Shaw Education is the best tool to overcome irrational fear. - me |
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| rklessdriver | Re: Another L98 Intake Option? | ||
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Senior Guru
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I think about any of the L98 computers could handle the upgrade no problem but I don't know squat about the L83 Crossfire ECM, except alot of guys on TGO have rewired their cars for one of the L98 computers.... Besides most L83 people are dead set on keeping the crossram type intake.
Maybe I should get into the game here and offer a complete turn key set up. I got the parts list. All I need I to do now is buy advertising in a few magazines, then offer to supply a test manifold kit for a rigged intake manifold test where my set up blows everything else out of the water..... Will |
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Posted on: 2011/5/29 1:48
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1984 Corvette. 434 SBC with a Powerglide. Best pass - 8.48@160MPH 1.23 60ft on MT 275/60R15 Radials. 1972 Corvette. LS5 454 BBC with M20 4 speed. Best Pass - Doing good to just pass a gas station. |
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| bogus | Re: Another L98 Intake Option? | ||
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Grand Imperial Pooh-Bah
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Quote:
Like that never happens... |
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Posted on: 2011/5/29 3:38
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The single biggest problem with communication is the illusion that it has taken place. - George Bernard Shaw Education is the best tool to overcome irrational fear. - me |
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| sliding | Re: Another L98 Intake Option? | ||
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Senior Guru
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I will definately go single plane on my 383 but I think
that it might be "too much" for my present engine. But maybe I'm wrong?! |
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Posted on: 2011/5/29 11:36
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'90 L98 auto with a lot of mods |
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| Matatk | Re: Another L98 Intake Option? | ||
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Webmaster
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I'm ready for my 383. I think the LTR is limiting me.
I still might email edelbrock and see what they say. Matthew |
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Posted on: 2011/5/29 12:25
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2002 EBM convertible, Magnusson supercharger, cam, headers, etc. 1989 Corvette...RIP |
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| Ultraman | Re: Another L98 Intake Option? | ||
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I am wondering why this hasn't been done before. Are these new products that are just now coming on the market? This is the first I have heard of the single plane on an injected C4. Of course I'm a newb on all this performance stuff.......
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Posted on: 2011/5/29 14:41
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| rklessdriver | Re: Another L98 Intake Option? | ||
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Quote:
I've had mine since 2007. I know a fellow that lives just a little west of me on CF has the Eldebrock set up on his 434 and his stuff has been running longer than mine. I don't remember his handle but a fellow on this board had one on his C4 that he built out of a Weiand Team G. I also know the Gulstrand street cars, which had engines built by Traco had converted single planes... that was back in the 80's. Joe Overtons car, well known as the fastest NA LTX has one. There are a lot of them out there, espc in the racing areas. Serious people have been welding up the best carb intakes for 30yrs now. For some reason the mfgrs seem to toss it by the wayside and when they do test them against their newest box type manifolds they use that ultra low profile Holley manifold... BTW the last test I saw of that dog, it actually compared pretty good to the new at the time Stealth Ram. Will |
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Posted on: 2011/5/29 15:46
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1984 Corvette. 434 SBC with a Powerglide. Best pass - 8.48@160MPH 1.23 60ft on MT 275/60R15 Radials. 1972 Corvette. LS5 454 BBC with M20 4 speed. Best Pass - Doing good to just pass a gas station. |
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| Jimson | Re: Another L98 Intake Option? | ||
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Guru Newb
 
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Quote:
How about some pictures of that motor? |
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Posted on: 2011/6/1 1:45
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| bogus | Re: Another L98 Intake Option? | ||
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Grand Imperial Pooh-Bah
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Take a look at rklessdriver's avatar...
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Posted on: 2011/6/1 4:12
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The single biggest problem with communication is the illusion that it has taken place. - George Bernard Shaw Education is the best tool to overcome irrational fear. - me |
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| biggrizzly | Re: Another L98 Intake Option? | ||
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2011 Memorial Day Car Show Winner!
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I took these last month when Will came up to our drag races. Very nice fabrication. I like the Fuel Pressure regulator and gauge setup.
 https://picasaweb.google.com/CorvetteC ... nShow#5602191148075954722  https://picasaweb.google.com/CorvetteC ... nShow#5602191151957578098 |
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Posted on: 2011/6/1 4:31
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Don Haller Corvette Club of America 94Coupe, 383Stroka, PeteK Trans, 3000stall, 3.54rear, Konis and bigger sways. |
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| bogus | Re: Another L98 Intake Option? | ||
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That is HARD CORE bad to the bone!
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Posted on: 2011/6/1 4:58
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The single biggest problem with communication is the illusion that it has taken place. - George Bernard Shaw Education is the best tool to overcome irrational fear. - me |
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| rklessdriver | Re: Another L98 Intake Option? | ||
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Senior Guru
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Don
Thanks for posting the pics of my personal engine. I can't rightfully take all the credit. It was alot of work and a few other talented people had their hand in it. I have few renditions of the Single Plane intake EFI that others before and after me have done. Here is the old Traco/Gulstrand L98 engines.  Here is another one with a bigger box style plenum.  Yet another one in an F Body. Just noticed this one is an LTX like mine.... You really have to have balls of steal to do this to an LT1/LT4.  The Edelbrock set up w/LSX TB and low profile adapter.  Will |
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Posted on: 2011/6/1 20:57
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1984 Corvette. 434 SBC with a Powerglide. Best pass - 8.48@160MPH 1.23 60ft on MT 275/60R15 Radials. 1972 Corvette. LS5 454 BBC with M20 4 speed. Best Pass - Doing good to just pass a gas station. |
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| sliding | Re: Another L98 Intake Option? | ||
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Senior Guru
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I really like the looks on Edelbrock low profile elbow,
last pic, but does anybody know if it'll fit under stock hood? |
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Posted on: 2011/6/2 16:47
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'90 L98 auto with a lot of mods |
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