Home Menu

Menu


          
PY Online Forums - Bringing the Pontiac Hobby Together > Search Forums > Search Results
Page 1 of 20 1 2311 Last »
Showing results 1 to 25 of 500
Search took 0.86 seconds. Search: Posts Made By: Tim Corcoran
Forum: Pontiac - Street 04-14-2024, 11:23 PM
Replies: 21
Views: 1,082
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: 315
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: 29
Views: 1,097
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: 736
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: 736
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: 736
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: 472
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: 444
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: 1,082
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: 444
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: 1,082
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: 49
Views: 1,671
Posted By Tim Corcoran
945 HP 790 TQ

945 HP 790 TQ
Forum: Pontiac - Race 04-07-2024, 01:40 AM
Replies: 19
Views: 444
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: 444
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: 444
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: 1,082
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: 790
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
Forum: Pontiac - Race 04-04-2024, 09:48 PM
Replies: 24
Views: 790
Posted By Tim Corcoran
The designer of the cam is gone now but, Bullet...

The designer of the cam is gone now but, Bullet knows Ultraydyne cams as well an anybody . Tim at Bullet worked for Harold for several years. Bullet highly recommended to run 1.65 and they...
Forum: Pontiac - Race 04-03-2024, 10:17 PM
Replies: 24
Views: 790
Posted By Tim Corcoran
Silly me, I was going to have the spring seats...

Silly me, I was going to have the spring seats machined. I took my heads to my machinist to have them machined and walked out with a set of +.050 valve locks. I'll put them on the exhaust valves only.
Forum: Pontiac - Race 04-02-2024, 04:24 PM
Replies: 24
Views: 790
Posted By Tim Corcoran
It looks like I am going to have the spring seats...

It looks like I am going to have the spring seats machined, on the exhaust side only so I can get the PAC 1243 springs installed at 1.850. Because the intake valves are .060 longer than the exhaust...
Forum: Pontiac - Race 04-01-2024, 08:53 PM
Replies: 24
Views: 790
Posted By Tim Corcoran
Thanks for the tip Skip, If one is 10lbs off do I...

Thanks for the tip Skip, If one is 10lbs off do I send it back or just put in another shim
Forum: Pontiac - Race 04-01-2024, 04:46 PM
Replies: 24
Views: 790
Posted By Tim Corcoran
I need to do my geometry, I know

I need to do my geometry, I know
Forum: Pontiac - Race 04-01-2024, 03:33 PM
Replies: 24
Views: 790
Posted By Tim Corcoran
I appreciate everyone's comments. I decided not...

I appreciate everyone's comments. I decided not to use these springs, I ordered a set of PAC 1243 springs and will install them at 1.850. I talked to Bullet and they recommended the springs and...
Forum: Pontiac - Race 03-31-2024, 04:42 PM
Replies: 24
Views: 790
Posted By Tim Corcoran
I was doing some reading on this subject and...

I was doing some reading on this subject and found out that I was calculating the valve spring pressure without taking into consideration the stepped retainer. I have dual springs and the retainer...
Forum: Pontiac - Race 03-31-2024, 01:13 PM
Replies: 24
Views: 790
Posted By Tim Corcoran
Chuckie Has the valvetrain been lightened up at...

Chuckie
Has the valvetrain been lightened up at all? Is this with stainless valves and steel retainers? What is your lift and duration?
Showing results 1 to 25 of 500
Page 1 of 20 1 2311 Last »

 
Forum Jump

All times are GMT -4. The time now is 08:00 PM.

 

About Us

The PY Online Forums is the largest online gathering of Pontiac enthusiasts anywhere in the world. Founded in 1991, it was also the first online forum for people to gather and talk about their Pontiacs. Since then, it has become the mecca of Pontiac technical data and knowledge that no other place can surpass.

 




Contact Us Home
Copyright © 2017