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Forum: Pontiac - Street 04-30-2025, 09:36 PM
Replies: 7
Views: 718
Posted By JJ88
Also wondering if you have any recommendations on...

Also wondering if you have any recommendations on what rockers I should purchase and from where. 7/16 bottle style with 3/8 threads
Forum: Pontiac - Street 04-30-2025, 09:34 PM
Replies: 7
Views: 718
Posted By JJ88
Push rods

Hi B-man
One more question. So I will be basically be upgrading my 1964 - 389 to be like a 1965 - 389 correct. The push rods existing measure at 8.6875

What I am finding for 65/66 - 389’s the...
Forum: Pontiac - Street 04-29-2025, 05:04 PM
Replies: 7
Views: 718
Posted By JJ88
Thanks so much. This was the thought my mechanic...

Thanks so much. This was the thought my mechanic had just wanted to verify with some knowledgeable Pontiac people. Really appreciate the quick response. Thanks again!
Forum: Pontiac - Street 04-29-2025, 04:44 PM
Replies: 7
Views: 718
Posted By JJ88
1964 -389 cam

Hello,
I have a 1964 Pontiac Grand Prix with a 389. The car was sold to me 24 years ago as a 421. Pulled the engine to seal it up and this when we discovered it was a 389 and not a 421. We put all...
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