My recollection from back in the day, there was no difference in the material in the exhaust port, just at the valve seat area. But of course my die grinder didn't care. I should look at what's still on my shelf, I think I have an example of each.
915 heads in a 69 GTX
- Thread starter ericisback
- Start date
Big bill
Well-Known Member
I’m going to running 915s on my 66 383 with a 4327s carter afb
Enjoy your 915's, whichever version you have. They are a nice stock head.
Big bill
Well-Known Member
I’m exited it’s an old school build stock stroke ,street hemi valve springs .
Are your 915's the HP version with the 1.74 exhaust valves?
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