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Old 03-08-2013, 08:45 PM
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12554290 heads on a gen 1 SBC?

I am picking up a set of 12554290 heads from a 1994-96 LT1. Will I have any issues with these going on a gen 1 010 type block? Are these a good choice? I'm getting them dirt cheap. Is the reverse cooling thing an issue?

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Old 03-08-2013, 09:11 PM
How fast is fast enough?
 
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Yep cooling issues. Google it
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Old 03-08-2013, 09:15 PM
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Originally Posted by ap72 View Post
Yep cooling issues. Google it
I did in fact there I found quite a bit about it on this site. I did search before posting this but must have did something wrong. Searched again and found all I needed and then some.
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Old 03-08-2013, 09:16 PM
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WILL NOT WORK thats why those heads are dirt cheap. Require a reverse flow block with extra water passages in front of block.
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Old 03-09-2013, 07:58 AM
How fast is fast enough?
 
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It can work but needs machining, vortecs are likely a better option or even better Chinese heAds and the of course better aftermarket heads.
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