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Old 05-03-2010, 06:23 PM   #9
Sublvr72
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Join Date: May 2004
Location: Simi Valley, CA
Posts: 1,387
Re: what's necessary to do a big block swap?

Quote:
Originally Posted by Fitz View Post
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.
I should probably clarify that... I've got a 307 and 3 speed. The goal is to pull out the motor and trans in my truck, and bolt in the motor and trans from the 89. The 454 is being pulled from a running truck so everything is there. Serpentine system, accessories, mechanical fan, etc.

My truck is currently drum brakes so the booster shouldn't be a problem yet.

So as for the motor mounts, the big block will fit right into the small block mounts?
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