How do i tell between a 1g and 2g head.

[95AWD6Bolt]

I need to know what the visual differences between a 1g and a 2g head are. I have both sitting in my garage and after moving things around and cleaning, I forget which is which.

 

[jdodds]

The 2g has the smaller ports. Heres a pic of the intake manifolds for comparison. 1g on top and 2g on bottom.

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