C3 Tech/Performance V8 Technical Info, Internal Engine, External Engine, Basic Tech and Maintenance for the C3 Corvette
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ZZ502 heads.

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Old Feb 9, 2023 | 11:20 AM
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Default ZZ502 heads.

I have a ZZ502 in my 72. Just bought Sanderson block hugger headers. I am not sure if they will fit the 502 if they have raised port heads. Are the 502 raised port heads.
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Old Feb 9, 2023 | 11:49 AM
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Your heads do not have raised exhaust ports.
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Old Feb 9, 2023 | 04:54 PM
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But the headers often need a little grinding on the lower edge with the bolts they use on the heads. Ck before getting in too far....

JIM
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Old Feb 12, 2023 | 08:06 AM
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I had to grid the flanges for head bolt clearance on my ZZ454. If you would like a picture I can post one later this week.
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Old Feb 12, 2023 | 08:43 AM
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Originally Posted by flyeri
I had to grid the flanges for head bolt clearance on my ZZ454. If you would like a picture I can post one later this week.

I had to do that on my Hookers.
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