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Search took 0.09 seconds. Search: Posts Made By: Tim Corcoran
Forum: Pontiac - Street Yesterday, 03:27 PM
Replies: 16
Views: 523
Posted By Tim Corcoran
I noticed the same thing about Spring pressure...

I noticed the same thing about Spring pressure that info is not correct. Even so it is a good video with some good entry level info. His second video on the same subject is also very good and a...
Forum: Pontiac - Street 04-22-2024, 11:09 PM
Replies: 16
Views: 523
Posted By Tim Corcoran
Cams Video

This is an interesting video and there is a part two that is good also

https://youtu.be/JPAeepqrY-0
Forum: Pontiac - Race 04-21-2024, 03:12 PM
Replies: 101
Views: 9,413
Posted By Tim Corcoran
The engine I built for my street car last year I...

The engine I built for my street car last year I used the BOP one piece rear main seal. I made the mistake of letting my machinist install it, thinking letting him do it was my best shot at getting a...
Forum: Pontiac - Race 04-21-2024, 02:34 PM
Replies: 101
Views: 9,413
Posted By Tim Corcoran
At the machine shop bearing clearances were...

At the machine shop bearing clearances were verified .026-.027 on the rods and the mains are .029-.031 and that is right about what I wanted. Prior to installing the rear main seal I checked the...
Forum: Pontiac - Race 04-21-2024, 01:51 PM
Replies: 101
Views: 9,413
Posted By Tim Corcoran
Drilling plug to lubricate distributor gear

Drilling plug to lubricate distributor gear
Forum: Pontiac - Race 04-21-2024, 12:35 PM
Replies: 101
Views: 9,413
Posted By Tim Corcoran
I got the block back from the machine shop. I am...

I got the block back from the machine shop. I am sure many of you know how exciting that can be if you have been waiting a long time. After installing the cam bearings while at the machinist we...
Forum: Pontiac - Street 04-19-2024, 10:34 PM
Replies: 50
Views: 2,522
Posted By Tim Corcoran
The small filter at the entrance of a Q-Jet is a...

The small filter at the entrance of a Q-Jet is a restriction even with the paper filter. There just isn't enough surface area in that tiny filter. I never run a filter there I use an external...
Forum: Pontiac - Street 04-18-2024, 08:14 PM
Replies: 5
Views: 439
Posted By Tim Corcoran
Everyone has their favorite oil mine is Brad...

Everyone has their favorite oil mine is Brad Penn, now Penn Grade. Not sure why they changed the name
Forum: Pontiac - Street 04-14-2024, 11:23 PM
Replies: 21
Views: 1,378
Posted By Tim Corcoran
Cliff, what was the year when you found these...

Cliff, what was the year when you found these Scorpion rocker failures.
Forum: Pontiac - Street 04-14-2024, 05:05 PM
Replies: 4
Views: 418
Posted By Tim Corcoran
The Butler lifters that Jay recommended are...

The Butler lifters that Jay recommended are Hy-Lift Johnson lifters and made in the USA they are a good lifter. If I were ever to go with flat tappet lifters again I would go with a solid cam and...
Forum: Pontiac - Street 04-11-2024, 10:49 PM
Replies: 35
Views: 1,546
Posted By Tim Corcoran
Steve, it was Dave Bischop from SD Performance...

Steve, it was Dave Bischop from SD Performance that did the port work and provided the design for the foundry that was casting it. Dave was somewhat unhappy with the results he said it could of been...
Forum: Pontiac - Street 04-11-2024, 10:42 PM
Replies: 30
Views: 1,360
Posted By Tim Corcoran
So it has a vacuum port on the distributor?

So it has a vacuum port on the distributor?
Forum: Pontiac - Street 04-11-2024, 09:02 PM
Replies: 30
Views: 1,360
Posted By Tim Corcoran
I don't believe the Progression has a vacuum...

I don't believe the Progression has a vacuum advance. Not sure I would want to drive a street a car on the street without vacuum advance.
Forum: Pontiac - Street 04-09-2024, 09:10 PM
Replies: 30
Views: 1,360
Posted By Tim Corcoran
I am using an OEM distributor with a Petronix...

I am using an OEM distributor with a Petronix conversion and an MSD 6AL. Works great for me and the price is right.
Forum: Pontiac - Race 04-09-2024, 06:16 PM
Replies: 13
Views: 604
Posted By Tim Corcoran
Another option is a new tank with an in tank...

Another option is a new tank with an in tank electric fuel pump. No more problems with fuel delivery and the tank looks stock. Tanks Inc sells them and not as pricey as you might think.
Forum: Pontiac - Race 04-09-2024, 01:40 PM
Replies: 19
Views: 542
Posted By Tim Corcoran
OK here's the deal. I went back and checked every...

OK here's the deal. I went back and checked every single spring and at 1.85 (IH) I'm getting between 258-268 and at net lift from 608-618. I am very happy with these numbers, not sure why I came up...
Forum: Pontiac - Street 04-07-2024, 01:22 PM
Replies: 21
Views: 1,378
Posted By Tim Corcoran
I did a search and found some failures but that...

I did a search and found some failures but that was several years ago. As stated maybe they have improved the product and maybe they are more reliable now, or maybe I should just open up my wallet...
Forum: Pontiac - Race 04-07-2024, 01:07 PM
Replies: 19
Views: 542
Posted By Tim Corcoran
All the open pressures are pretty much in the...

All the open pressures are pretty much in the ball park. But the pressure on the seat varies from 220 to 268. If I shim up the springs that are low on the seat then the open pressure will be...
Forum: Pontiac - Street 04-07-2024, 01:52 AM
Replies: 21
Views: 1,378
Posted By Tim Corcoran
Sorry, I meant to say the Scorpion Endurance...

Sorry, I meant to say the Scorpion Endurance Rocker Arms, not lifters
Forum: Pontiac - Race 04-07-2024, 01:50 AM
Replies: 51
Views: 2,066
Posted By Tim Corcoran
945 HP 790 TQ

945 HP 790 TQ
Forum: Pontiac - Race 04-07-2024, 01:40 AM
Replies: 19
Views: 542
Posted By Tim Corcoran
I bought them through a retailer and not sure if...

I bought them through a retailer and not sure if I should go through the retailer or go to PAC directly. I will call PAC on Monday and see what they say. I just don't want to go through the trouble...
Forum: Pontiac - Race 04-06-2024, 04:30 PM
Replies: 19
Views: 542
Posted By Tim Corcoran
Chuck First off Bullet Cams knowing Ultradyne...

Chuck
First off Bullet Cams knowing Ultradyne cams and having specific knowledge of my cam recommended the PAC 1243 springs installed at 1.85 with 1.65 rockers. Bullet also said .070 is the ideal...
Forum: Pontiac - Race 04-06-2024, 01:10 PM
Replies: 19
Views: 542
Posted By Tim Corcoran
PAC 1243 Valve Springs

Got a new set of PAC 1243 springs and I checked half of the springs and decided to stop because I think I will be returning the springs.

Installing them at 1.850 and 2.215 open

On the seat...
Forum: Pontiac - Street 04-06-2024, 10:28 AM
Replies: 21
Views: 1,378
Posted By Tim Corcoran
Scorpion Endurance Lifters

Does anyone have any experience with these lifters good or bad?
Forum: Pontiac - Race 04-04-2024, 10:23 PM
Replies: 24
Views: 940
Posted By Tim Corcoran
Yeah I already check the clearance and it's good....

Yeah I already check the clearance and it's good. My machinist made the same recommendation. Thanks
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