No offense to anyone, but why? I don't see it being worth the hassle. You could pick up a low buck 454 for very little and add on a few after market parts for good torque numbers. With a Caddy it's not a bolt in, and you have to build a hybrid tranny to make it work. Very little aftermarket support, and simple engine parts are gonna cost more than a BBC.
On the other hand a Buick Stage 1 455 would rock in a truck.
I agree with Corey.
I'll admit up front I'm biased because I've done the 454 swap (put a 454 TBI in my Blazer). I'll also admit I have not swapped in a Cadillac engine.
My experience with engine swaps is you tend to think of engine mounts, transmission bolt patterns and such. The thing is there are ton of "small details" such as power steering brackets, alternator brackets, exhaust system clearance, clutch linkage, etc, etc.
I think it's fair to say we've all seen engine swaps that look awesome and others that were absolutely pathetic. The ones that look professional are done by people who sweat the details, and that takes a huge amount of time.
For me, there's a lot to said for the simplicity of the 454 swap. You can find the right parts at a salvage yard, or do as I did, buy a donor Suburban and harvest what you need. Here are just some of the things that I harvested (and things that you will need to address if you go with a Caddy engine): Radiator, fan shroud, fan blade, fan clutch, radiator hoses, all engine driven accessories, including pulleys, brackets and belts, power steering hoses, air conditioning hoses, exhaust manifolds, wiring harnesse(s), motor mounts.
You get the idea. It's also really nice when you need a part to be able to go to a dealer or parts store and just say "I need a @#$%^ for a 1988 Suburban with a 454".
You may not have the Wow! factor of a Caddy powered Blazer, but IMHO a 454 powered Blazer is still pretty cool!
