bbc heads 049s or 781s???

Old 08-26-2012, 05:32 PM
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ejm
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Default bbc heads 049s or 781s???

going to put 2.19 intake valves in and some bowl work what heads will do better and have higher comp? so say 049s some times have a 122cc combustion chamber?????
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Old 08-26-2012, 05:34 PM
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with kb 257 pistons what compression will they yeild??
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Old 09-01-2012, 06:37 PM
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bixblk
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Default heads

I have a set of 781's just out of the machine shop, ss ,o/s valves no springs . 681 dollars worth of work taking offers let me know
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Old 09-20-2012, 06:42 AM
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venturi
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Yes those heads can have huge chambers and ya gotta cc them..I had to get a lot milled my 049's to get it down to 118. I think the 049's/781's are pretty close in terms of port desgin&size. They flow well as even a stock set can flow 270 cfm on the intake!
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Old 09-20-2012, 10:11 AM
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Take a look at the 820s, you may like them better.
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Old 11-01-2012, 12:10 PM
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I have a single bare reconditioned 820 head. Oven cleaned, shot blasted, mag checked, bronze liners honed to size, hardened exh seats, 3 angle valve job and resurfaced. 2.065 int and 1.72 exhaust. Casting #3993820.
$475.00.

(315) 343-6030 days
(315) 343-3666 eves
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