C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Who still does performance engine work?

Old 07-19-2014, 08:31 PM
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gears
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Default Who still does performance engine work?

Seems like the LT1/4 vettes of the 90's are somewhat being phased out as far as finding parts and finding places that do performance builds on them.If I wanted to have and insane horsepower motor built and installed and tuned,who would be the go to company/shop? Who still does these things for the C4?
Old 07-19-2014, 08:50 PM
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MavsAK
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Originally Posted by gears
Seems like the LT1/4 vettes of the 90's are somewhat being phased out as far as finding parts and finding places that do performance builds on them.If I wanted to have and insane horsepower motor built and installed and tuned,who would be the go to company/shop? Who still does these things for the C4?
Want insane power?
buy an EROD LS3 and a supercharger for it
More seriously though, AFR makes heads, Comp Cams still sells cams... 383 cranks are a dime a dozen out there...
Procharger still makes a supercharger for the LT engines (and L98 for that matter)
FIC has plenty of injector options, TPIS has a ton of injectors, header options etc.... Dewitts can keep her nice and cool...

As far as tuning goes..now that's another story.

Last edited by MavsAK; 07-19-2014 at 08:53 PM.
Old 07-19-2014, 08:57 PM
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cumbercr
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Talk to forum member TPI421VETTE. He builds some serious performance engines.
Old 07-19-2014, 09:08 PM
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Send him your car and drive it out built installed tuned to perfection

Jim is a standup guy you can trust to have everything done right
Lots of happy people here hes done this for.

his contact

http://forums.corvetteforum.com/memb...421-vette.html

Last edited by cv67; 07-19-2014 at 09:18 PM.
Old 07-19-2014, 09:10 PM
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Another vote for TPI421Vette.
Old 07-19-2014, 09:48 PM
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One more vote here.
Old 07-20-2014, 07:09 AM
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gears
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Where is he located at?
Old 07-20-2014, 02:00 PM
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Utah, I believe.
Old 07-20-2014, 02:01 PM
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Originally Posted by gears
Where is he located at?
Salt Lake City. He's shipped engines to the 48 states, Canada and England. He built mine and I live in California.
Old 07-21-2014, 11:55 AM
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He also built mine.
Old 07-21-2014, 12:15 PM
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Parts shouldn't be a problem yet.
Old 07-21-2014, 03:44 PM
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Originally Posted by MavsAK
Want insane power?
buy an EROD LS3 and a supercharger for it
More seriously though, AFR makes heads, Comp Cams still sells cams... 383 cranks are a dime a dozen out there...
Procharger still makes a supercharger for the LT engines (and L98 for that matter)
FIC has plenty of injector options, TPIS has a ton of injectors, header options etc.... Dewitts can keep her nice and cool...

As far as tuning goes..now that's another story.
The EROD is an engine for hot rods to meet California CARB crap.

If he wants a LS crate buy the LS3 525 HP. Thats the one I would buy.

He is in OK, no CARB there. LS3, long tubes, hi-flo cats=perfect!
Old 07-21-2014, 04:11 PM
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Best deal on a LT1 Stroker motor (imho)

http://www.ebay.com/itm/1992-Camaro-Vette-Impala-SS-LT1-383-stroker-long-block-/301188326150?pt=Motors_Car_Truck_Parts_Accessories&fits=Model%3ACorvette&hash=item4620392306&vxp=mtr
Old 07-21-2014, 05:34 PM
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Originally Posted by PLRX
The EROD is an engine for hot rods to meet California CARB crap.

If he wants a LS crate buy the LS3 525 HP. Thats the one I would buy.

He is in OK, no CARB there. LS3, long tubes, hi-flo cats=perfect!
525 right out of the box. Jesus. Even better... it won't suffer valve drop like an LS7
Old 07-21-2014, 08:31 PM
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GMPP has some awesome stuff out in any configuration EFI carbd, accessories etc. Ready to go



I cant imagine how bad those stock heads will choke a 383
Without a LOT of work they cant make any decent power

Last edited by cv67; 07-21-2014 at 08:58 PM.
Old 07-23-2014, 07:58 PM
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Would the LS3 bolt up to the ZF tranny? How plug and play would it be with the 96 wiring harness?
Old 07-24-2014, 02:32 PM
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Originally Posted by MavsAK
525 right out of the box. Jesus. Even better... it won't suffer valve drop like an LS7
The LS7 valve drop has to do with poor driving/gear shifting. I have a friend in San Diego with a stock Z06, and it has 188,000 miles.

Last year we drove to NC for the Coca-Cola 600, drove Tail of The Dragon, and back to California.



Originally Posted by gears
Would the LS3 bolt up to the ZF tranny? How plug and play would it be with the 96 wiring harness?
No it will not bolt to the LT4 bell-housing, but Im sure there is an adapter plate for sale somewhere, and it will never plug to anything that is 15 years older.

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Old 07-24-2014, 04:18 PM
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Originally Posted by PLRX
The LS7 valve drop has to do with poor driving/gear shifting.
.
Actually, Pete, the exhaust valve problem on the LS7 motors is about head castings that were produced for GM with a geometry issue along with poor machining. Some cars had this issue, some didn't. There have been cases where cars with only 1 or 2 thousand miles had more than the .003 exhaust guide allowed clearance. My 08Z06 was out of spec at 23,000 miles and GM paid for a new set of heads. I've been driving and racing manual Corvettes for decades and this is the first one with valvetrain wear issues.


Last edited by 383vett; 07-24-2014 at 04:23 PM.
Old 07-24-2014, 04:50 PM
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Cottrell Racing Engines - TPiS
Old 07-24-2014, 07:36 PM
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Valve issues aside, the fact that an LS7 can ramp up nearly another 100 hp from 5k to 6K rpm is pretty damn cool for a NA street car. Couldn't imagine how fun one would be dropped in a C4.

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