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Hi everyone,
Im currently rebuilding a 253 and after a bit of advice. Its a 253 red cast late 76 and the pistons are stuffed, the bore has a slight lip at the top, which supposedly will require are rebore, i was wondering whether 283(?) s/b chev pistons will match up with the 253 conrod and crank, so that i will only need to bore out the block to accomodate the s/b chev pistons. Is this a feasable approach? I am assuming that with this i may need to shave the heads a bit, which i wanted to do slightly anyway to increase compression.
Does this sound all to simple??
All advice greatly appreciated.
Cheers, Nic.
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Chev SB 283 and 307 have a 3 7/8 inch bore and a 3 inch stroke. The 253 shares it's 3 5/8 inch bore with the 186 and 202. This means you would have to bore it 1/4 inch which means you will be well into water. The 307 gudgeon height is pretty close to righ |
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Thanks for clearing that up, Byron. I think that I will stick with the original plan of oversized 253 pistons. As you can obviously gather, I don't have much of an idea with eng intenals. Also, thanks for the offer with parts, however I'm in Tas, and l
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