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Forum: 74-76 Firebird & TA TECH 03-23-2024, 10:49 AM
Replies: 16
Views: 515
Posted By PAUL K
Looks like a cool car. Not a fan of the 79-81...

Looks like a cool car. Not a fan of the 79-81 spoilers. The engine isn't wild at all. They just totally screwed up on the cam selection. Most likely a cam swap would take all the "unhappiness" out of...
Forum: 70-73 Firebird & TA TECH 03-23-2024, 09:01 AM
Replies: 7
Views: 296
Posted By PAUL K
Any chance you could post a close up of a single...

Any chance you could post a close up of a single combustion chamber without the valves installed? The over the counter RAIV XC heads had completely different ports (area under the valves) than the...
Forum: THE LOBBY 03-22-2024, 02:20 PM
Replies: 47
Views: 1,087
Posted By PAUL K
Interesting topic, my Ford Ranger shop truck has...

Interesting topic, my Ford Ranger shop truck has 320k miles and has never seen full throttle. My Camry Wagon (dog hauler) had 270k and never saw full throttle and neither has the Equinox that...
Forum: Pontiac - Race 03-21-2024, 11:46 AM
Replies: 12
Views: 664
Posted By PAUL K
Yes.....even an .039 occasionally

Yes.....even an .039 occasionally
Forum: Pontiac - Race 03-21-2024, 08:19 AM
Replies: 12
Views: 664
Posted By PAUL K
We shoot for zero to .005 above the deck for a...

We shoot for zero to .005 above the deck for a factory block build. Never had an issue.
Forum: Pontiac - Street 02-24-2024, 01:44 PM
Replies: 19
Views: 807
Posted By PAUL K
Wow..... I know if that was a reproduction intake...

Wow..... I know if that was a reproduction intake manifold a bunch of folks would get a worked up over that.
Forum: Pontiac - Race 02-24-2024, 11:33 AM
Replies: 22
Views: 1,251
Posted By PAUL K
We designed a program around 2000. It was...

We designed a program around 2000. It was originally created for one of Butler's "Engine Master" entries. Unfortunately with today's labor costs and inflated parts prices it wouldn't be cost...
Forum: Pontiac - Race 02-24-2024, 11:17 AM
Replies: 22
Views: 1,251
Posted By PAUL K
Flow wise the CNC chambers have an advantage.

Flow wise the CNC chambers have an advantage.
Forum: Pontiac - Street 02-22-2024, 11:36 AM
Replies: 21
Views: 1,094
Posted By PAUL K
Lol!

Lol!
Forum: Pontiac - Street 02-22-2024, 10:45 AM
Replies: 21
Views: 1,094
Posted By PAUL K
Good morning Stan, I spent a lot of time twenty...

Good morning Stan, I spent a lot of time twenty some years ago working with swirl, when it was the "thing to do". We found techniques that would improve swirl and everytime it was a win but also...
Forum: Pontiac - Street 02-22-2024, 10:30 AM
Replies: 21
Views: 1,094
Posted By PAUL K
Understood.... But you can have too much quench...

Understood.... But you can have too much quench and too little quench.. The Hemi is an excellent head because of it's air flow capabilities but completely fails (sometimes) due to it's combustion...
Forum: Pontiac - Street 02-22-2024, 09:29 AM
Replies: 21
Views: 1,094
Posted By PAUL K
By it's octane tolerance.

By it's octane tolerance.
Forum: Pontiac - Street 02-19-2024, 02:11 PM
Replies: 6
Views: 361
Posted By PAUL K
We reuse them all the time. Procedure used to be...

We reuse them all the time. Procedure used to be install "as is" then Copper Coat with second use then retire.... Since their price increases we'll run them for a third time if they look good.
Forum: Pontiac - Race 02-19-2024, 09:47 AM
Replies: 11
Views: 622
Posted By PAUL K
I don't think there would be much difference. I...

I don't think there would be much difference. I remember packing the original GM seals and they almost locked up the motor once you torqued the cap. And I remember after those seals broke in the...
Forum: Pontiac - Street 02-18-2024, 05:14 PM
Replies: 16
Views: 602
Posted By PAUL K
2.25

2.25
Forum: Pontiac - Street 02-18-2024, 04:55 PM
Replies: 16
Views: 602
Posted By PAUL K
Both valves were tested out of the box. Both...

Both valves were tested out of the box. Both valves would most likely show improvement with basic modifications. Obviously one has a lot more room for improvement.
Forum: Pontiac - Street 02-18-2024, 04:48 PM
Replies: 16
Views: 602
Posted By PAUL K
Hi Tim I'm not going the mention brands....

Hi Tim

I'm not going the mention brands. Most valve manufacturers offer different series of valves. Series X might flow great but Series Z might suck (lol) or one part number in the same series...
Forum: Pontiac - Street 02-18-2024, 04:45 PM
Replies: 16
Views: 602
Posted By PAUL K
Thanks Steve Your questions in order ...

Thanks Steve

Your questions in order

One brand we sell the other is sold by many including Pontiac specific shops.

Seat width .060 vs .085

Margin .060 vs .050
Forum: Pontiac - Street 02-18-2024, 02:02 PM
Replies: 16
Views: 602
Posted By PAUL K
Bargain intake valve flow test

A while ago we started working on some Pontiac aluminum heads for a pretty stout factory block build. The valves I wanted to use for the project were on Covid back order and took more than eight...
Forum: Pontiac - Race 02-18-2024, 01:28 PM
Replies: 11
Views: 622
Posted By PAUL K
We do all the time. Usually just the assembled...

We do all the time. Usually just the assembled rotating assembly. Type of cam bearings and core diameter will affect the amount of friction along with the cam drive set up. Not long ago we had two...
Forum: Pontiac - Race 02-17-2024, 10:17 AM
Replies: 4
Views: 378
Posted By PAUL K
It doesn't matter. Steve's logic makes sense but...

It doesn't matter. Steve's logic makes sense but that would mean every other engine we do that with is wrong...lol

But then again Steve's logic may be wrong, you didn't say if you have a plus or...
Forum: Pontiac - Street 02-16-2024, 12:08 AM
Replies: 47
Views: 1,529
Posted By PAUL K
Lol..... You going full Biden on us Gach?...

Lol..... You going full Biden on us Gach? Ultradyne shut down years and the owner passed quite a while ago.
Forum: THE LOBBY 02-14-2024, 01:09 PM
Replies: 70
Views: 2,997
Posted By PAUL K
I've been a member since 1997ish. If they...

I've been a member since 1997ish. If they cancelled the paper magazine I will not renew my membership. I kept up with my membership for the good of the hobby. The magazine was pretty much all I got...
Forum: Performance Parts For Sale/Wanted 02-14-2024, 12:39 PM
Replies: 18
Views: 571
Posted By PAUL K
You were just a bit late.... Must be out of...

You were just a bit late.... Must be out of practice. Lol

I know a guy sitting on one I'll let him know
Forum: Performance Parts For Sale/Wanted 02-14-2024, 12:28 PM
Replies: 18
Views: 571
Posted By PAUL K
They're out there.... I just sold a couple

They're out there.... I just sold a couple
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