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Old 10-03-2005, 01:08 PM
Geoff Higgins
 
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Head selection questions... Newbie

So bear with me.
I just recieved a donated set of 350 heads for an SBC. I've yet to decide wether or not I want to use them, but I'm hoping you guys can point the way. These are a set of of early 70's, 3998993 heads, each chamber is 76cc and the valve sizes listed, yet unconfirmed, should be between 1.72/1.50 and 1.94/1.50, on e of the two. I've quickly researched and found these are kind of "rated" as a low performance head. So I guess my ultimate question is, would a great cam pull power out of these and make them acceptable heads?
I'm putting this in my 53 chevy and it's just a cruiser, I won't be dragging in it or anything. Will I be dissapointed using these?

Thanks in advance,

Geoff

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Last edited by 1953Chevy210; 10-03-2005 at 03:51 PM.
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Old 10-03-2005, 03:31 PM
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If you're rebuilding the engine run flattop pistons and a cam with no more than 220 degrees of duration at .050" lift and it'll be just fine. All parts selection should be made with a idle to 5000rpm operating range in mind if this thing's going to be a cruizer. Bob
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Old 10-03-2005, 03:39 PM
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Quote:
Originally Posted by 1953Chevy210
I'm putting this in my 53 chevy and it's just a cruiser, I won't be dragging in it or anything. Will I be dissapointed using these?

Thanks in advance,

Geoff
Good heads will make up for the wrong cam to some degree but a good cam can never make up for the wrong heads. There are better heads but for your intended usage you'll never know the difference, it will run just fine. Besides, free is hard to beat.
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Old 10-03-2005, 04:30 PM
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Yeah, but they ain't free.

Larry
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Old 10-05-2005, 12:58 PM
Geoff Higgins
 
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Yet another question

F-Bird 88, out of curiousity I checked around and was wondering if it was worth getting new 2.02/1.60 stainless valves and a good decking and cleaning put into these heads. Again, I am kinda on the cheap with this motor, and yes, they were undesirable from the guy that gave them to me, only because when he put his block together he had already had some hi-perf heads made for him, so he used them. So, yeah, you can't beat free at this point.

Geoff
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Old 10-05-2005, 06:18 PM
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You are better off going aftermarket than trying to make something out of those stock heads.
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Old 10-05-2005, 06:34 PM
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if you can run them as is, no work , run them on street
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Old 10-06-2005, 09:52 AM
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Quote:
Originally Posted by 1953Chevy210
I'm putting this in my 53 chevy and it's just a cruiser, I won't be dragging in it or anything.
I think we need a little reality check here guys. If this is really what he wants the 993's are fine. Just do a valve job on them and run 'em. Nothing wrong with anybody's advice if he actually wants more than what he stated in his first post, but if it's really "just a cruiser" why spend the money for better heads when in actuality he probably won't notice any difference? This is a motor that wil probably rarely see the high side of 4 grand. Freshen up the 993's, put a short duration torque cam in it, a good 4 Bbl. intake and dual exhaust and cruise.......... BUT........if you really want more than "just a cruiser", then yeah, what they said.
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Old 04-16-2006, 02:36 PM
Geoff Higgins
 
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I know it's been awhile but....

Well, I got ahold of some 416's. They are pretty dirty, but they'll clean up nice. The block is with the machinist and the question has come up about the compression I hope to achieve. I want to run on pump gas, as I'm not a millionaire, but I have no idea what I'm shooting for with these heads. I'm obviously not in a huge hurry with this shop (It has been almost a year now, budget and time on both ends) but I'd like to have an answer sometime soon, as I'm going to have him ordering pistons and all that good stuff. Can you tell yet that I have very little idea what I'm doing here?

Any help would be appreciated,

210

Last edited by 1953Chevy210; 04-17-2006 at 04:13 PM.
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