What type of heads do i have?
Supreme Member
Joined: Jul 1999
Posts: 5,183
Likes: 42
From: Oakdale, Ca
Car: 89 IrocZ
Engine: L98-ish
Transmission: 700R4
Ya, the casting numbers are the best place to start, if they're GM heads a trip to www.mortec.com or www.chevtmania.com can help you out.
If aftermarket heads, you'll need to contact the manufacturer.
If aftermarket heads, you'll need to contact the manufacturer.
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