Gen I Gen II Heads question

[GRNBGON]

What is the difference between Gen I and Gen II Heads? I have some NOS Heads listed on Ebay but I am not sure what the difference is. I would like to be able to list them correctly.
Thanks in advance.

 

[dave6666]

Good thought. I had sent you an inquiry about casting numbers (part numbers) on your first listing, and w/o the same question answered, I'm just a'watching.

 

[TexasPettey]

Not sure about the differences, but Gen1 and Gen2 are not interchangeable. I'd love it if they were. We Gen1 guys have to pay $750 for head gaskets.

 

[RTTTTed]

Not sure but when I bought a set of stock header gaskets for my Gen 2 I got a set of V10 exhaust manifold gaskets that had puny exhuast ports and some of the stud holes were in the wrong spots. I assumed they were for a Gen 1.

Ted

 

[Green Viper]

I was able to put a Gen 2 intake on a gen 1 motor and also swapped the exhaust headers between the two, so can tell you that are two bolts different gen 1 vs gen2 where the heads are bolted to the intake. Not a big deal but required some drilling on the intake to make the gen 2 intake work on the gen 1 head. Other than that the gen 2 and gen 1 intakes were interchangeable.

The head gaskets were also obviously diffferent where the water jackets are concerned but the exhaust ports lined up pretty much the same gen 1 vs gen 2.

So my guess is if you could resolve the water jacket issue you could use the Gen 2 heads on a Gen 1 car but that is probably more trouble than it is worth.

 

[Greg Good Cylinder Heads]

What is the difference between Gen I and Gen II Heads? I have some NOS Heads listed on Ebay but I am not sure what the difference is. I would like to be able to list them correctly.
Thanks in advance.

I looked at the ad, and it is a Gen 1 head.