Thread: Sbc 400
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Old 07-31-2006, 11:00 PM
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Re: Sbc 400

Quote:
Originally Posted by maxwedge
Ok, someone has to bore and hone it for you, again any auto machine shop has the info you need. This is a thin wall cast block so be careful.
Going off that reccomendation by maxwedge, if the machine shop says it's all right to bore it , Be sure to upgrade your cooling system. Since the walls are already thin, boring will make them thinner. If possible, install a 4 core radiator in the vehicle and use a higher performance cooling fan to draw more air through the radiator. I took a 1970 Chevy sb 400 and bored it out .030 (406 cu.in.) and first put it in a 1976 Monte Carlo. then a 1978 Monte Carlo, and then finally putting it in a 1964 Bel Air. Each vehicle I installed it in had a 4 core radiator put in along with a high performance cooling fan (which stayed with the engine and fit each vehicle it was in without any problems or modifications.) Make sure the machine shop also properly cleans the block including the coolant passages.
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