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Old 11-05-2007, 14:08   #1 (permalink)
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roll Max bore dia.

My brother had a 351w built by a guy in Indiana Block # C90E 6015 B-6. iT'S A 1970 BLOCK. It's been bored .080 thousands. Is this ok to run or should he look for another block.
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Old 12-06-2007, 16:29   #2 (permalink)
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Re: Max bore dia.

I've run one 40 over, but that was max recomended. You're twice that!
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Old 12-07-2007, 20:50   #3 (permalink)
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Re: Max bore dia.

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Originally Posted by fordo66
My brother had a 351w built by a guy in Indiana Block # C90E 6015 B-6. iT'S A 1970 BLOCK. It's been bored .080 thousands. Is this ok to run or should he look for another block.
I would find another block , a sonic test would scare you I expect with core shift and lack of metal
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Old 12-14-2007, 04:27   #4 (permalink)
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frown Re: Max bore dia.

It's not unheard of but the life of the engine will most likely be very short
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Old 01-20-2008, 15:20   #5 (permalink)
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Re: Max bore dia.

for low performance street driving the .080 would work, but for performance, try to stick with .030 or .040.
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Old 05-04-2008, 06:47   #6 (permalink)
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Re: Max bore dia.

but don't people bore these out to like 4.232 and put in a stroker crank to get these engines up to a 427 displacement?

if this one is only 0.080 that not even close to 0.232 over..

or i could be terribly wrong?

~adam
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Old 05-06-2008, 18:37   #7 (permalink)
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Re: Max bore dia.

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Originally Posted by amarthfea View Post
but don't people bore these out to like 4.232 and put in a stroker crank to get these engines up to a 427 displacement?

if this one is only 0.080 that not even close to 0.232 over..

or i could be terribly wrong?

~adam
Not quite, a Dart or World block will net you 4.2 max, with a stock block your in the water....
.030 is the max for most factory blocks with serious performance in mind
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Old 05-07-2008, 11:23   #8 (permalink)
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Re: Max bore dia.

ahhh.. thank you blue66coupe

i've been looking into it and the 0.030 over is commonly used in a stroker kit to get to the 393 cu. Anything bigger and, your right, your running a little thin.

~adam
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