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Search took 0.08 seconds. Search: Posts Made By: Tim Corcoran
Forum: Pontiac - Street Today, 09:14 AM
Replies: 6
Views: 488
Posted By Tim Corcoran
Butler sell valve cover gaskets in different...

Butler sell valve cover gaskets in different thicknesses they even have them in 5/16 thick.
...
Forum: Pontiac - Street Yesterday, 03:14 AM
Replies: 20
Views: 816
Posted By Tim Corcoran
Oh no, 18" wheels on a GTO??? Yikes

Oh no, 18" wheels on a GTO??? Yikes
Forum: Pontiac - Street Yesterday, 03:11 AM
Replies: 14
Views: 1,304
Posted By Tim Corcoran
Those are some sweet Centerlines in the first...

Those are some sweet Centerlines in the first picture I hope your not replacing them for those black wheels I see in another picture. Did you do the port work on the heads? What is the purpose of...
Forum: Pontiac - Street 05-02-2024, 03:37 PM
Replies: 13
Views: 443
Posted By Tim Corcoran
Not to sound like a broken record but I converted...

Not to sound like a broken record but I converted both my 65 and 67 LeMans to a TH-400 and all I did is move it and drill it just like Ken said. I never noticed a height difference, not say it's not...
Forum: Pontiac - Street 05-02-2024, 04:52 AM
Replies: 8
Views: 352
Posted By Tim Corcoran
Reading the plugs on a street given car doesn't...

Reading the plugs on a street given car doesn't tell you much. Is it telling you idle, cruise or full throttle? As you said it may be rich at idle or low speed
Forum: Pontiac - Race 05-01-2024, 03:51 PM
Replies: 25
Views: 697
Posted By Tim Corcoran
I bought a new Victor several years ago and it...

I bought a new Victor several years ago and it sat too high with a Felpro .040 gasket. I checked the port alignment without the gasket and it looked perfect. So I put a small amount of silicone...
Forum: Pontiac - Street 05-01-2024, 03:21 PM
Replies: 17
Views: 433
Posted By Tim Corcoran
There are a few options What I would do is...

There are a few options

What I would do is figure your compression with an online compression calculator using a flat top piston and your planned bore size. Don't forget to include the number of...
Forum: Pontiac - Street 04-29-2024, 03:12 AM
Replies: 4
Views: 257
Posted By Tim Corcoran
I don't see a reason to go to the trouble and...

I don't see a reason to go to the trouble and expense of installing electric fan(s) on your car. The factory shrouds and clutch fan should do an excellent job of cooling a 400 cubic inch motor. If...
Forum: Pontiac - Street 04-25-2024, 12:06 PM
Replies: 20
Views: 968
Posted By Tim Corcoran
Back in the day there weren't much available for...

Back in the day there weren't much available for Pontiac after market rods so Jim Butler, and probably others figured out if you turn the Pontiac rod journal down to 2.2 you could use a BBC rod, but...
Forum: Pontiac - Street 04-25-2024, 06:00 AM
Replies: 20
Views: 968
Posted By Tim Corcoran
I was thinking the same thing because the ratio...

I was thinking the same thing because the ratio between intake and exhaust flow on a Pontiac engine is not great even on a ported E-head with upgraded 1.77 exhaust valves, yet they still make pretty...
Forum: Pontiac - Street 04-25-2024, 03:42 AM
Replies: 18
Views: 769
Posted By Tim Corcoran
My last build the chain was very loose and I...

My last build the chain was very loose and I tried a Rollmaster -.010 short I couldn't even get it installed. I exchanged it for a -.005 set and it fit tight with almost no slop. Sometimes a test fit...
Forum: Pontiac - Street 04-23-2024, 03:27 PM
Replies: 20
Views: 968
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: 20
Views: 968
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: 9,877
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: 9,877
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: 9,877
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: 9,877
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: 55
Views: 3,566
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: 470
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: 1,462
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: 441
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: 1,696
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: 2,191
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: 2,191
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: 2,191
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.
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