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post #1 of 8 (permalink) Old Oct 3rd, 03, 01:37 PM Thread Starter
 
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Location: ont. Canada
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Just like to hear your guy's thoughts on these heads. 462624 2.02/1.6 Got them for free so no loses there. Just like to know if there worth running.I'm running 14101083 but thinking of changing to 462624 heads whats your thoughts?
Engine:355
10.1 flattops
750 edelbrock carb
performer intake
have to dig out my cam spec's

Just really looking for info in the heads
Car works good but thought might work better with them.
Thanks

Bernie<br /><br />81 Firebird
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post #2 of 8 (permalink) Old Oct 3rd, 03, 03:21 PM
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14011083...55-86...350..........Crate motor for years indicated.
285/300hp, 64cc chambers, 1.94"/1.5" valves

462624.....75-86...350/400......76cc chamber, 1.72/1.5, 1.94/1.5 or 2.02/1.6 valves

If this is correct, you'll lose compression and performace due to the larger 76cc head.

68 Camaro~LSx ~all motor
1.54 60'--6.95 @ 98.45 660'--10.96 @ 121.53
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post #3 of 8 (permalink) Old Oct 3rd, 03, 04:28 PM Thread Starter
 
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The 14101083 heads are 87up 1.94 64cc center bolt heads.But thought some 2.02 76cc heads would work better an thinking of installing dome top pistons just tring to get some more power.

Bernie<br /><br />81 Firebird
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post #4 of 8 (permalink) Old Oct 4th, 03, 03:37 AM
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I have a set of those 462624 heads on my 1980 L-82 Corvette. That was the top of the line head for that year but these are early smog era pieces so they are not as desireable as some of the older heads or aftermarket heads. I will keep them on my car for the sake of originality. If I was building a low budget factory head engine and the heads were free, I would use them. If you want more power than that, you need better heads without question but they cost $. How fast do you want to go? [img]smile.gif[/img]

-Mark.
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post #5 of 8 (permalink) Old Oct 4th, 03, 04:27 AM Thread Starter
 
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Guess i'm going to stick with what i'm running now it works good.The heads i have now have alot of work done to them so thxs for the info.
This is a great site guys!

Bernie<br /><br />81 Firebird
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post #6 of 8 (permalink) Old Oct 4th, 03, 11:17 PM
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Expect a full 1 point drop in compression, and softer low end response, with a bit less top end power to boot. The ports on any 624 head I have ever seen have a bad short turn radius on them...nothing a little porting can't fix though. The 083's actually seem to be a pretty fair head.
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post #7 of 8 (permalink) Old Oct 5th, 03, 02:03 PM
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I've heard alot of complaints about the 624's being crack prone, as well.

11.243 @ 117.81 thru mufflers and pump gas. Only trailered when I break something. OUCH
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post #8 of 8 (permalink) Old Oct 5th, 03, 08:38 PM
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Quote:
Originally posted by bravewink:
I've heard alot of complaints about the 624's being crack prone, as well.
Yes, if you stare at them too long they will crack. These are the only heads I have replaced more of than late 882's.

"This is not a cheerocracy...I make the cheercisions around here"
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