J code 302 1968 head required ( V8 sorry)
- Thread starter xctasy
- Start date
Do you have a head that needs to be repaired/rebuilt or do you not have a head to work with? If you don't have a head your most practical route would be to locate a standard 289 head. They are basically the same. Best of luck to you.
Joe
Joe
DON
Well-known member
Just in caseā¦ you do need two for a 302
I've got a set for my 68 Jcode Mustang but I don't want to sell them, I'll check to see if I have any extras.As was said earlier 65-66 289 and 67 small chamber 289 heads are functionally the same, especially if they have the provision for air injection that was the main difference some 289 castings had the provision but some earlier ones didn't all Jcodes had the casting provision even though some weren't drilled and tapped. While chamber size was essentially the same for all the small chamber heads including the 289HP there were minor differences in shape between the Windsor castings and Cleveland castings.
PSIG
Well-known member
'67 had several very similar (but different) 289 heads. Verify what you have to match, or source two of the same for replacement. If this is not a concours restoration, using any suitable alternative is likely the easiest and least expensive path. See here for versions, and start hunting online head reman outfits for the best deal for a fresh pair at reasonable cost. (watch the shipping!). I'd expect $250-$350 each today, ready-to-run, but the higher-cost ones might have free or cheap shipping, making them a better total deal. 
Any specific known casting numbers for which you are looking?
'67 had several very similar (but different) 289 heads. Verify what you have to match, or source two of the same for replacement. If this is not a concours restoration, using any suitable alternative is likely the easiest and least expensive path. See here for versions, and start hunting online head reman outfits for the best deal for a fresh pair at reasonable cost. (watch the shipping!). I'd expect $250-$350 each today, ready-to-run, but the higher-cost ones might have free or cheap shipping, making them a better total deal.
The Jcode heads he is asking about are 1968 302 4V heads a 1 year only deal that were essentally repeats of the 65-67 289 small chamber heads with C8ZE casting numbers I think there were A and B suffix variations.There were several variations of 67 289 heads with different casting numbers, small chamber versions similar to the 65-66 heads and larger chambered versions used in 289 2V's and early 302 2V's, some had provisions for A.I.R. (smog) some didn't, all 68 Jcode heads had provisions for A.I.R. in the casting but weren't always machined. Any 65 and later small chamber 289 head can match the performance potential of the J code head as will 63 and 64 heads but some of them had smaller valves so would need upgrading to the larger valves.Even having a combination of 1 Jcode head and a small chambered 289 head will be un noticeable in how it runs.Now if this is for a restoration of something like for example a 68 Shelby GT350 then you would want to stick with the C8ZE casting but otherwise I wouldn't worry too much about it,in that case I would more likely look for a set of early 351W heads or a set of later GT40 heads and get them done up.
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