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Aftermarket engines

malc350

Well-known member
Joined
Jul 6, 2002
Messages
337
Location
Essex, UK
Corvette
1996 LT-4 Z51 CE
The turbocat 427 post got me thinking about something I've had at the back of my mind if I ever wrecked my engine.

With the availability of crate engines from GM and other sources as well as some good value high horsepower ready built engines, inluding 383 and even 427 small blocks, has anyone fitted or considered fitting one of these engines to their TT as an alternative to rebuilding their stock engine?

I know you'd have to be REAL careful regarding compression ratio but it seems like an attractive option to me.

Of course to keep the car as a TT you'd have to fit the turbos but I was also wondering, if fitting a real high horsepower small block, could the amount of turbo assistance be reduced (adjust wastegates?) to avoid reliability problems?

Imagine a Twin Turbo 383 or 427 small block that looks "stock" and makes crazy power...!
 
My immediate thought on the subject is that if you even think you have the potential to blow up your stock engine you should do this swap BEFORE that happens. Put your stock engine on a stand in the garage. Once you blow it up it's gone. The most common failure on these cars seems to be putting a rod through the block due to detonation.

And yes, there is no reason a properly built 350 of the same block design (or larger SBC) wouldn't be a bolt in replacement for the current engine. The key words being "properly built".
 
Damn good idea

That way you can enjoy the benefits of a lunatic engine and still have the original nice and safe.

As these cars are probably worth more stock than modified, if you were to sell the car (if!) put the stock engine back in and keep the other as a spare for the next project!
 
malc350 said:
As these cars are probably worth more stock than modified, if you were to sell the car (if!) put the stock engine back in and keep the other as a spare for the next project!
Exactly :upthumbs

You can only have the original engine (or anything for that matter... ) once :eek

Kevin has a good point, better to pull the original out before than regret, later :(

Is a stroker motor in your future:eek
 
You'd better be ready to swap turbos too. The rotomaster turbos on our cars probably won't flow enough for anything over 400ci. A 383 might even be a stretch.
 

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