cylinder head question - The 1947 - Present Chevrolet & GMC Truck Message Board Network

bean · 06-03-2012, 04:23 PM

i was given a set of cylinder for an early model 350. I want to make use of them but my question is this: they are 3 holes where the water circulates, one bigger one in the center and 2 smaller on each side of the bigger hole. there is little metal between the big and smaller holes and in one place a small piece of metal at some point broke away due to rust whatever. no the smaller hole and the bigger are essentially one. So.. are these heads going to be worth saving?

hopefully this makes sense

bean · 06-03-2012, 06:11 PM

please help me out! i know this may seem like a weird question lol

JimKshortstep4x4 · 06-03-2012, 08:22 PM

Since the head must seal to the block with the existing design head gaskets my guess is you will end up with a problem. My advice would be to scrap them.

Jim

bean · 06-04-2012, 01:58 PM

i was afraid of that

manimal · 06-04-2012, 02:04 PM

With as common as small block heads are, I would scrap those and look for another pair.

chevytruckluver · 06-04-2012, 02:12 PM

do you have a pic? I think small block 400 heads have extra water jacket holes, if this is what you are seeing its not a problem, however since they were given to you and I know small block 400's were bad about cracking heads I would have them checked before I just put them on.

hjewell2 · 06-04-2012, 02:30 PM

Quote:

Originally Posted by bean

please help me out! i know this may seem like a weird question lol

Not worth the price of a wasted motor due to heat and leaks.

06-03-2012, 04:23 PM	#1
bean Registered User Join Date: Jun 2002 Location: Fort Worth, TX Posts: 920	cylinder head question i was given a set of cylinder for an early model 350. I want to make use of them but my question is this: they are 3 holes where the water circulates, one bigger one in the center and 2 smaller on each side of the bigger hole. there is little metal between the big and smaller holes and in one place a small piece of metal at some point broke away due to rust whatever. no the smaller hole and the bigger are essentially one. So.. are these heads going to be worth saving? hopefully this makes sense

06-03-2012, 06:11 PM	#2
bean Registered User Join Date: Jun 2002 Location: Fort Worth, TX Posts: 920	Re: cylinder head question please help me out! i know this may seem like a weird question lol

06-03-2012, 08:22 PM	#3
JimKshortstep4x4 Senior Member Join Date: Jul 2001 Location: Muskegon,MI,USA Posts: 6,026	Re: cylinder head question Since the head must seal to the block with the existing design head gaskets my guess is you will end up with a problem. My advice would be to scrap them. Jim __________________ 1971 Shortbox step side 4x4, 350 sbc, 3:07 rear end 1965 Impala SS 400 sbc, Muncie rock crusher 1966 Impala SS 396 bbc, TH 400 1969 El Camino, 350 sbc, TH 350 1971 Snowplow built on a Blazer frame 1972 GMC Short bed, stepside, TH 400, 427 BBC

06-04-2012, 01:58 PM	#4
bean Registered User Join Date: Jun 2002 Location: Fort Worth, TX Posts: 920	Re: cylinder head question i was afraid of that

06-04-2012, 02:04 PM	#5
manimal Registered User Join Date: Oct 2006 Location: Southern Kalifornia Posts: 3,066	Re: cylinder head question With as common as small block heads are, I would scrap those and look for another pair. __________________ ------------------------------------------------------ -Lance 2000 Chevy C2500, 5.7, 4L80e 1999 Suburban K2500, 7.4, 4L80e 1980 Camaro..son's car...PROJECT

06-04-2012, 02:12 PM	#6
chevytruckluver Eat, Sleep, Drive a Chevy Join Date: Apr 2010 Location: the town of the cow, Texas Posts: 1,152	Re: cylinder head question do you have a pic? I think small block 400 heads have extra water jacket holes, if this is what you are seeing its not a problem, however since they were given to you and I know small block 400's were bad about cracking heads I would have them checked before I just put them on. __________________ Trey Silence may be Golden, but Duct Tape is Silver! 72 Short Step 57 "big window" short step



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