Yee Haw........I need some input - The 1947 - Present Chevrolet & GMC Truck Message Board Network

1968 C-10Cowboy · 07-10-2002, 07:32 PM

I just looked up my casting numbers on my block and it's a 350 with 327 heads. Is this ok? Are 327 heads better for the 350? I know my heads are 60cc cause I looked up the numbers on them as well.

**COBALT** · 07-10-2002, 07:47 PM

Well, think of the dynamics. You have a different combustion chamber, and possibly smaller ports. What about the valve trains? The cam may be effected...

Like I told you earlier I have a 327 manifold married up to a 1980 350. The intake ports are smaller, and I had to advance it quite a bit to get it to stop stumbling on acceleration (even after I rebuilt the carb), but it runs great now.

07-10-2002, 07:32 PM	#1
1968 C-10Cowboy Registered User Join Date: Jul 2002 Location: Midland,Texas Posts: 46	Yee Haw........I need some input I just looked up my casting numbers on my block and it's a 350 with 327 heads. Is this ok? Are 327 heads better for the 350? I know my heads are 60cc cause I looked up the numbers on them as well. __________________ 350/.30 400 Turbo Trans 3.73 Rear end

07-10-2002, 07:47 PM	#2
COBALT Senior Member Join Date: Sep 2001 Location: Seattle, WA, USA Posts: 5,817	Well, think of the dynamics. You have a different combustion chamber, and possibly smaller ports. What about the valve trains? The cam may be effected... Like I told you earlier I have a 327 manifold married up to a 1980 350. The intake ports are smaller, and I had to advance it quite a bit to get it to stop stumbling on acceleration (even after I rebuilt the carb), but it runs great now. __________________ '69 3/4 ton C20 2wd-350ci/TH400 '69 3/4 ton Custom 20 2wd-350ci/4sp Manual '99 2wd 5.7 Chevy Tahoe Seattle, WA.

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