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#1
07-12-2017, 05:32 PM
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65 vs 72 BBC short block pros & cons
I have a
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-Dave Semper Fi! 69 Camaro SS396 L34 X66 Last edited by HawkX66; 08-30-2017 at 06:08 PM. 
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#2
07-13-2017, 12:25 PM
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If your 65 block is cast prior to August then its the "Fang" block. The cylinders can be opened up to .125 beyond 427 bore. Its a keeper.
August 65 on, the block had the same casting number for some unknown reason but lost the thick cylinders and the fangs.
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"Knowledge is good" Emil Fabor 67 L/78 Camaro SS/RS H-H,1W,2LGSR,3SL,4K,5BY. (Sold) 70 L/78 Nova M-21,Black Cherry,Sandalwood Int. 09 Pontiac G8 GT Premium,Sport,Roof. Liquid Red.
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#3
07-13-2017, 03:25 PM
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Dave;
As long as the bores measure out good and the pistons are still in good shape, you can swap out the rotator from the `65 block into the `72 unit. That alleviates the rear cam bearing snafu as well as the need to run a canister oil filter or one of those wonky adapters. Eric
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#5
07-14-2017, 04:44 AM
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My 1965 Z-16 Chevelle motor had been bored out to a 4.25 (plus another .060 for a total bore size of 4.310 and 440 CID). I've heard this was only possible on the thick-walled, 1965 4-bolt main blocks.
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1962 Biscayne O-21669 MKIV/M-22 1962 Bel Air Sport Coupe 409/1,000
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