Forum: Pontiac - Street
05-02-2022, 12:50 AM
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Replies: 40
Views: 3,514
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Forum: Pontiac - Street
05-01-2022, 11:11 AM
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Replies: 40
Views: 3,514
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Forum: Pontiac - Street
05-01-2022, 10:45 AM
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Replies: 40
Views: 3,514
That’s quite a significant flow increase...
That’s quite a significant flow increase particularly still using the small valves. I will be closely watching and following your lead.I can’t start on my heads just yet as I have a couple of other...
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Forum: Pontiac - Street
04-29-2022, 08:55 AM
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Replies: 40
Views: 3,514
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Forum: Pontiac - Street
04-29-2022, 08:35 AM
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Replies: 40
Views: 3,514
Was looking at spotts straight stud kit with...
Was looking at spotts straight stud kit with half”thread on bottom. Would these not work in with this head? I have a mill so can copy your method.. the other thought I had was using vortec long slot...
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Forum: Pontiac - Street
04-28-2022, 11:59 AM
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Replies: 40
Views: 3,514
Thanks for the info. I’m pretty sure he will...
Thanks for the info. I’m pretty sure he will using an early tri power. I can make up radius entry plates to have a look at different flows in the intake manifold ports when on the head. Being a low...
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Forum: Pontiac - Street
04-24-2022, 06:46 PM
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Replies: 40
Views: 3,514
I am hoping peter23s efforts will answer these...
I am hoping peter23s efforts will answer these questions. I know a few hotroders that would like to use the early engines but the heads put them off. Pre 60 Pontiac engines are not that uncommon and...
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Forum: Pontiac - Street
04-24-2022, 06:17 PM
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Replies: 38
Views: 5,319
I don’t know why the cast 455 after market...
I don’t know why the cast 455 after market cranks don’t offer a 3” main version with the Pontiac journal size. They already have the casting it’s just a mater of making the mains 3”. This would make...
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Forum: Pontiac - Street
04-23-2022, 07:29 PM
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Replies: 40
Views: 3,514
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Forum: Pontiac - Street
04-23-2022, 12:24 PM
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Replies: 40
Views: 3,514
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Forum: THE LOBBY
04-23-2022, 03:34 AM
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Replies: 252
Views: 31,885
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Forum: Pontiac - Street
04-22-2022, 05:36 PM
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Replies: 2
Views: 1,097
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Forum: 60 & Older Pontiac TECH
04-22-2022, 06:10 AM
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Replies: 4
Views: 910
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Forum: Pontiac - Street
04-22-2022, 02:06 AM
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Replies: 2
Views: 1,097
350 block
By any chance has anybody soniced a 68 350 block? I was wondering if it followed the usual Pontiac pattern of being a thicker wall in the first year. I have one sitting around and was wondering how...
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Forum: 60 & Older Pontiac TECH
04-21-2022, 06:39 PM
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Replies: 4
Views: 910
Thank you for the information. Was the angle...
Thank you for the information. Was the angle changed much and how much was needed? Did it mimic the stock centres and angle of the chev head? I have spare heads to practice on and a mill. And do you...
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Forum: Pontiac - Street
04-21-2022, 01:11 AM
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Replies: 40
Views: 3,514
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Forum: Pontiac - Street
04-20-2022, 11:58 PM
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Replies: 40
Views: 3,514
1960 heads.
First of all before I get told there are better heads this what the guy wants to use. I am presently trying to modify a pair of 1960 heads. I have sourced new valves at standard size. These are about...
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Forum: 60 & Older Pontiac TECH
04-20-2022, 11:58 PM
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Replies: 4
Views: 910
1960 heads.
First of all before I get told there are better heads this what the guy wants to use. I am presently trying to modify a pair of 1960 heads. I have sourced new valves at standard size. These are about...
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Forum: Pontiac - Street
10-12-2021, 08:16 AM
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Replies: 16
Views: 625
Thanks for the info guys I was sure the later...
Thanks for the info guys I was sure the later 61-66 rockers didn’t work so will try a set.Both my 63 tempest and my 67 bonneville run quite well on the local gas and are over 10 to 1 compression but...
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Forum: Pontiac - Street
10-11-2021, 04:24 PM
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Replies: 16
Views: 625
Thanks Tom for your reply. The problem is...
Thanks Tom for your reply. The problem is 1955-1960 rockers are not interchangeable with the 61 to 66 rockers length or geometry wise. You are forced to use the 60 parts hence will need to pin or...
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Forum: Pontiac - Street
10-11-2021, 10:00 AM
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Replies: 16
Views: 625
1960 389 info
I need some info from the past. My buddy got his hands on a 1960 389. It still has standard bores . It’s getting bored out 040 and the crank is 010 and may get away with a polish. He wants to use the...
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Forum: Pontiac - Street
07-16-2021, 03:34 AM
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Replies: 71
Views: 11,936
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Forum: Pontiac - Street
07-03-2021, 10:10 PM
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Replies: 177
Views: 39,480
If you go to u tube and look up LS lifters in...
If you go to u tube and look up LS lifters in Pontiac’s (lsx hunter) and retrofitting GM roller lifters ( craw daddy customs) you will get a good overview of the setup. If randy can do a reasonably...
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Forum: Pontiac - Street
05-03-2020, 05:21 AM
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Replies: 31
Views: 3,760
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Forum: Pontiac - Race
05-02-2020, 06:30 PM
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Replies: 30
Views: 7,012
I have had a 68-69 block sonic tested and it...
I have had a 68-69 block sonic tested and it would happily go .090 no problem at all. As the blocks get harder to find some of those worn .060 blocks are worth a sonic test as custom oversized...
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