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- - How many CI do I have? (https://67-72chevytrucks.com/vboard/showthread.php?t=225063)

53lowdown

01-28-2007 12:29 PM

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.

kwmech

01-28-2007 12:44 PM

Re: How many CI do I have?

Probably went 30 over. which would make it about a 312

cst70rocket

01-28-2007 01:57 PM

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:)

rage'nrat638

01-28-2007 02:04 PM

Re: How many CI do I have?

Quote:

Originally Posted by kwmech (Post 2006549)

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 :)

FarmTruk

01-28-2007 02:59 PM

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

PrinsGMC

01-28-2007 03:05 PM

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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