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 pontiac 455 block with # 2 main cap missing
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Sitting Bull

169 Posts

Posted - 08 Aug 2014 :  10:19:07 PM  Show Profile  Reply with Quote
Will I be able to replace 1 main cap or do I have to get a complete set. The block is a standard bore at this time . Will need a line bore .


428 Posts

Posted - 22 Aug 2014 :  11:19:44 PM  Show Profile  Reply with Quote
As you stated, line boring is a must. If needing to replace one then a set of aftermarket rods might be a better choice and give you some piece of mind as well.

Real pontiac power
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The Great White Buffalo

7280 Posts

Posted - 23 Aug 2014 :  03:56:06 AM  Show Profile  Reply with Quote
Main cap replacement is fine since you are align boring. If you weren't align boring you'd be rolling the dice.

Bowties are for Pee-wee Herman. "Chevy": even the name sounds cheap, but not as cheap as your Pontiac will be with an LS transplant.
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Blued and Painted

3505 Posts

Posted - 23 Aug 2014 :  11:01:27 AM  Show Profile  Reply with Quote
All in on 10 black.

Bull Nose Formula/ 461/ Q-Jet/
TH400/ 3.08 8.5 / R44TS.
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