I have a '92 Cr automatic that I am considering swapping the LT1 for an LS engine. I would like to know if this is a good swap, if I should swap the engines and trannies or just engines, and what are the obsticles I will run into? I have an DeWitt rad, would it need changed, engine mounts electrical connections, computer swap, air intake, etc. Is there a noticable difference in power? I know I'm asking for a lot but it seems like a worthy project and cheaper than trading up to a C5.
Bernie

 

if your transmission is 4l6e you don't have to change it .

I used to drive a LS1 for 6 years . The engine is damn good and make decent power with cam only . But if you like C5s , you can sell your C4 and invest some money to buy a C5 .

 

Will you notice a power increase - yes. Stock for stock or mod for mod.

And as far as keeping the trans:
If you wanted to stay auto, I would sell your current LT1 and trans as a package, and buy an LS1 with the 4L60-E still on it (out of am f-body with related wiring harness/computer). The combos are usually cheap.

That said, if you want a street car w all the creature comforts this may not be a "budget" swap. It is far from impossible but more difficult and costly than you may realize.

More budget friendly options would be:
1- Upgrade the LT1 to an LT4 (head/cam package).
2- Stroker kit (plus above for even better results).
3- Sell the 92 and upgrade to a C5 (they are getting cheap, and the money spent on a swap may get you there). Plus, modded cars don't resell for what you have in them. If you upgrade to a C5 you will have more resell value if you need/want to change again.

I am in the process of an LS1 swap. My car however, will be a street legal, but mostly track car. I did not have to deal w making the dash work, keeping the A/C or even heat, etc. Even with all that, sometimes I wish I had just picked up a high mile C5...

I've also come to the realization, I will likely lose $ if I ever sell it.

In my mind, this project is best for the following scenarios:
1- You love your C4 (sentimental value or just outstanding condition) and do not want a C5
2- Just want to take on the challenge
3- Track car/hot rod (stripped down, light, and built for speed)
4- You want obscene power (not stock)

Options 1 and 4 would be for a nice C4, like I assume you have. Options 2 and 3 would be better with a well worn (cheap) C4.

 

Guys, Thanks for the input. I may just sell the C4 (I dearly love this car) but the C5 would be easier for my wife to get in and out of. And the money difference is less than it used to be. I do love doing these types of mods but may have to pass on this one.
Thanks again!
Bernie