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Old 12-19-2005, 06:23 PM
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usually with the sprayed caps you only do the center caps which means you still have to do something with the front cap and the rear cap. These are the ones that most guys cut and put a brace on.The front cap on a 400 block is the weak link.They like to crack in the center at over 500 hp. Not a good thing.when you cut and brace the caps you have to use some good high strength metal for your braces.I don't feel the rear cap is as big a problem as the rest of the caps. But they build a brace for that to.This set up should work to 600 hp on a normal aspirated motor with a little commonsense.Any thing more than that or if you just want to feel safe go aftermarket block. The reason i braced all but the rear cap on my block was more a test on my theory than anything else and as i said i know it works on 520 hp and 7600 t0 8000 rpm tested at the tune of about 300 10. sec runs.
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