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H-Body L67 swap

A

ajm786

New member
Oldsmobile made the 1999 88LS in a LSS version that had the supercharged engine. Mine doesn't have the supercharged. It has an L36. The engine and trans are going bad. I want to drop in a L67 + 4T65-E HD trans. How hard would it be do this, and would it be compatible? Would the new engine/trans simply bolt right up, or would it need different mounts/hardware?

Here's what I do know that I'm going to need.

L67 + 4T65-E HD
new axles for HD trans
PCM tune

Anything else? What about the fuel lines? Would I have to upgrade that along with the fuel pump?

Thanks for all the help!
 


youd need the fuel rails, but the fuel pump is the same.

other than that it's pretty much a straight swap. you'll need the 2 bar map sensor that came on the L67 and the wiring harness or you have to buy another connector so that your current MAP wiring will clip in.

either way, check this site out:

www.motorswap.org
 
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