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

L98 turbocharged!!

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Old Sep 28, 2006 | 05:06 AM
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Default L98 turbocharged!!

I read an article in a September edition of 'Vette' magazine about a bench tested single turboed L98.
Apparently the cam may have been non stock, but even so it was producing 500hp, 600ft/1b tq at the crank, with 8-9psi - normal cr..

That's impressive, and the set up looked fairly straight forward, even utilizing standard exhaust.. I didn't see a price approximation for this sort of package, anyone??
oh, and any -ve's to this.....i.e will engine pop in 100 miles!!

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Old Sep 28, 2006 | 09:42 AM
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wow 500 hp, from that much psi? Thats seems like a bit much for that little of boost. That would be a cool vette though.
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Old Sep 28, 2006 | 11:39 AM
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A coupla things in this article are open for discussion.

1. The base engine was not stock. 332 HP is almost 100hp over stock. That alone is impressive enough and how this gain was produced is not described other than long tubes.

2. The engine was only run on a dyno (so far). Driveability with the FAST Xfi has yet to be determined.

3. How many pieces of equipment still need to be removed or relocated to accomodate the kit? Wheres the intercooler gonna fit?

My point is a good turbo kit should offer the least in mods and reduction in creature comforts. Can't someone copycat the Callaway kit?

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Old Sep 28, 2006 | 01:06 PM
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I am glad that engine wasn't stock... with that kinda output, I would expect the stock bottom end to last about 30 minutes on an engine dyno... the exact lifespan of the turbo L98 that GM turned over to Callaway to finish...
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Old Sep 28, 2006 | 02:53 PM
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Originally Posted by JrRifleCoach
A coupla things in this article are open for discussion.

1. The base engine was not stock. 332 HP is almost 100hp over stock. That alone is impressive enough and how this gain was produced is not described other than long tubes.

2. The engine was only run on a dyno (so far). Driveability with the FAST Xfi has yet to be determined.

3. How many pieces of equipment still need to be removed or relocated to accomodate the kit? Wheres the intercooler gonna fit?

My point is a good turbo kit should offer the least in mods and reduction in creature comforts. Can't someone copycat the Callaway kit?


1. I s easy Long tubes and a good set of heads and tunnel work.

2. Fingers crossed

3. I wanna see that too.

The Callaway is very hard to duplicate its frame is not similiar to a standard C4 frame. The piping runs through it! But that would be the cats ****.
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Old Sep 28, 2006 | 04:35 PM
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Originally Posted by JrRifleCoach
My point is a good turbo kit should offer the least in mods and reduction in creature comforts. Can't someone copycat the Callaway kit?


riiiigggghhhhttttt 'cause it is so simple...


There were well over a thousand components that went into that kit and it didn't just "bolt-in"

While there are some other options out there today, the best deal going is a used factory TT car - already done, ready to drive
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Old Sep 29, 2006 | 10:04 AM
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Originally Posted by *89x2*
riiiigggghhhhttttt 'cause it is so simple...


There were well over a thousand components that went into that kit and it didn't just "bolt-in"

While there are some other options out there today, the best deal going is a used factory TT car - already done, ready to drive
Just curious...how much are the Callaway cars selling for? I saw several at Carlisle a few years back and I was wishing one of them was mine.
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Old Sep 29, 2006 | 11:17 AM
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I have a single turbo on my 85. The engine guts are stock. It runs 8-9 psi. I have been running it that way for about a year and a half with no problems. It does not come close to 500hp or 600 ft/lbs torque. It is 361 hp and 497 torque.
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Old Sep 29, 2006 | 04:17 PM
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Originally Posted by HeeHaw89
Just curious...how much are the Callaway cars selling for? I saw several at Carlisle a few years back and I was wishing one of them was mine.
...on the cheaper end of the spectrum, 1987's can go for as little as low-mid 20's (with miles) and recently, there have been some in the 65k+ range, sold. (1991 Aero)

Also, here is a link that may give you some help w/ finding a Callaway
http://www.callawayownersgroup.com/M...ace/market.htm

- I hope this helps
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