My friend has an l03 in his 91 RS Camaro and my 86' Iroc has the LB9, well he wants to put my heads on his engine, well Thats not gonna happen easily, so we thought, why not just throw a cam and stuff into the LB9, and then throw the LB9 from the heads to the oil pan, into his and then use his tbi on it, easier than swapping a tuned port into it. Is there any things that you guys know we will run into. Will the tbi bolt up to the lb9's heads? Where there any differences in the blocks? We basically just wanna use the basics from the 86 and rebuild the 86 engine and then throw it into the 91 camaro.
If there are any problems that you guys see that might happen, please inform me. otherwise i was thinking it should be a straight forward swap.

 

The new intake will not bolt directly onto the older heads. The center two bolts on each side of the intake are at a different angle on the newer engine, whereas they are all the same angle on the older.

The newer block is a roller cam style, but the older flat-tappet cams & lifters will fit (the pushrods need to follow the lifter type). Don't mix lifter and cam types.

I would suggest a cam in the LB9, then swapping the entire engine and induction (including harness, computer, and fuel pump) into the later car. Perhaps more work, but the TPI is arguably superior to the TBI.

The LB9 exhaust is also better than the LO3, so swap all that or start from scratch with headers on back to the rear bumper.

 

well the engine started coming out today, and well its not going o to well, there are a couple tight spots and who ever had this engine apart before me ran some wires in the wrong spots, and omg is that fun trying to work around, How bad would it be to swap completly to tpi from the lo3?

 

ttt. come on, anymore help?

 

Some more work now, a bunch better for a long time to come.

Do it!