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Forum: Pontiac - Street 09-23-2020, 03:11 PM
Replies: 37
Views: 6,073
Posted By JLMounce
I spoke with Jeff a couple weeks back about this....

I spoke with Jeff a couple weeks back about this. The gist of what he advised me about is that he doesn't the 320+ cfm port work on the D port head for street use. His rationale being that the port...
Forum: Pontiac - Street 09-22-2020, 09:36 PM
Replies: 37
Views: 6,073
Posted By JLMounce
I have a set of as cast d ports straight from...

I have a set of as cast d ports straight from Kauffman. Still to date one of the best upgrades I did to the car.

I have a bit over 10000 miles on those heads without issue.
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