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Old 05-03-2010, 04:44 PM   #5
Fitz
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Join Date: Jan 2007
Location: Tucson
Posts: 2,183
Re: what's necessary to do a big block swap?

Quote:
Originally Posted by Sublvr72 View Post
My buddy is sending a 89 chevy 2500 to the scrapper and it's got a 454 and turbo 400 trans that he's gonna give me for cheap. What's needed to get this swapped into my truck?

are the motor mounts the same or will they need to be changed? Any other problems I might run into?

I'm trying to get everything together before the swap so it goes as seamlessly as possible.


I'm already pricing out intake manifolds to swap out the TBI back to carb, and I'm looking for some headers as well.
Aside from motor mounts and frame stands,
be sure to take the entire serpentine belt drive,idler and all of the bracketry power steering pump, A/C compressor, idler and pulleys. You didn’t say which motor you’re running now so I’ll assume a small block, which means you’ll need a larger Radiator. I doubt a fan & fan clutch from 67-72 is going to be compatible with the belt drive on that motor so you may want to think about an electric fan.
The stock power brake booster is 10 in in diameter and is probably going to interfere with the valve cover on that side so you might need a smaller diameter booster if you’re running power brakes. I don’t know which starter you have on that motor but the large housing starters almost fill the exhaust path on the passenger side so you might need a mini starter.
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