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Old 01-28-2007, 12:29 PM   #1
53lowdown
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How many CI do I have?

69 C10, with original 307 block - PO had it bored when it was rebuilt - but he's long gone and didn't know how much it was bored. So it's most likely what size? Can you bore a 307 out to 4 inches to make it a 327? Is that what most shops would do since the 327 pistons would be easy to find? Just curious. Trying to track down the rebuilder but so far no luck.
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Old 01-28-2007, 12:44 PM   #2
kwmech
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Re: How many CI do I have?

Probably went 30 over. which would make it about a 312
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Old 01-28-2007, 01:57 PM   #3
cst70rocket
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Re: How many CI do I have?

Never seen a 307 block that would go .125 over. They are thin wall casting blocks. I'm sure it's either .020,.030 or .040
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Old 01-28-2007, 02:04 PM   #4
rage'nrat638
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Re: How many CI do I have?

Quote:
Originally Posted by kwmech View Post
Probably went 30 over. which would make it about a 312
dito on the ci 's i had my 350 bored 30 over and have a 355 now
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Old 01-28-2007, 02:59 PM   #5
FarmTruk
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Re: How many CI do I have?

Here's a good linky for 307 info...http://www.jalopyjournal.com/forum/s...ad.php?t=45615
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Old 01-28-2007, 03:05 PM   #6
PrinsGMC
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Re: How many CI do I have?

Chances are you went 30 over (312). i went 40 on my vette (350) and now its a 357
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