Does anyone know if you can swap out 3.4 with a 3.8 in a 94?

 

Yes you can. You'll need the under dash wiring, engine wiring harness and PCM, tranny, fans, exhaust and a few other parts.

 

Thank you. I am thinking about doing that type of swap.

 

You'll also need pockets deeper than the Grand Canyon. Do yourself a favour and just buy a V8 car. It'll cost less.

 

^I agree. Or if you want to keep your car and get some serious power, do a 3500 top end swap and cam it. That's what I'm planning on doing. I've seen this done and the cars that it was done to were making 225-275RWHP with a tune. That's better than a stock z28.

 

Also, I might add, the top end swap will cost you less than $1000 with all the parts, gaskets, and the tune if you do the work yourself.

 

if your going to go to a 3.8 you might as well just swap to a v8. other wise i would say just keep the 3.4

 

dont you have to change out the pistons as well with swap. i know i looked into the 3400 top end conversion when i still had my 3.4 in the car and that you need to change the pistons to make it work other wise the compression is to high.

 

Chaotic I never thought about doing a top end swap. Thanks for the idea.

 

If you are going to go from a 3.4 to a 3.8, it is the same process as going from any V6 to a V8. You will need an entire doner car. Just buy a 3.8L car it will be far cheaper and chances are, unless you are a very skilled mechanic it will be more relaible as well.

Massey