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Search took 0.06 seconds. Search: Posts Made By: Tim Corcoran
Forum: Pontiac - Street 04-25-2024, 03:42 AM
Replies: 17
Views: 555
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 04-22-2024, 11:09 PM
Replies: 20
Views: 779
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, 02:34 PM
Replies: 101
Views: 9,530
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 - Street 04-19-2024, 10:34 PM
Replies: 50
Views: 2,755
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 04-14-2024, 05:05 PM
Replies: 4
Views: 421
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 - Race 04-09-2024, 06:16 PM
Replies: 13
Views: 640
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: 563
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 - Race 04-06-2024, 04:30 PM
Replies: 19
Views: 563
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 - Street 03-23-2024, 05:06 PM
Replies: 58
Views: 2,350
Posted By Tim Corcoran
On Comp's website for the 85701 Lifter, Travel:...

On Comp's website for the 85701 Lifter, Travel: .150 in, Recommended Preload: .100 in
Forum: Pontiac - Street 03-22-2024, 10:18 PM
Replies: 8
Views: 376
Posted By Tim Corcoran
The factory cast iron manifold is a great...

The factory cast iron manifold is a great performance piece. Many want to install an aftermarket aluminum manifold just so they can go slower. Other choices that work well and are stock height are...
Forum: Pontiac - Street 03-09-2024, 11:29 AM
Replies: 16
Views: 1,042
Posted By Tim Corcoran
There no reason to disconnect the fuel when doing...

There no reason to disconnect the fuel when doing a compression test cranking the engine does not pull fuel out of the carb as long as the choke is open and the throttle is held open. I use a remote...
Forum: Pontiac - Street 03-07-2024, 01:01 PM
Replies: 26
Views: 1,992
Posted By Tim Corcoran
If you have the hood clearance you can put a...

If you have the hood clearance you can put a spacer between the carb and the manifold and drill and tap the spacer in the back or front. this would give you pretty good distribution.
Forum: Pontiac - Street 03-07-2024, 12:52 PM
Replies: 14
Views: 1,176
Posted By Tim Corcoran
Originally I thought it might be a muffler...

Originally I thought it might be a muffler bearing support bracket
Forum: Pontiac - Street 03-01-2024, 01:25 PM
Replies: 13
Views: 749
Posted By Tim Corcoran
Dump the A6 compressor they weigh a ton, are old...

Dump the A6 compressor they weigh a ton, are old technology and rob 50 HP when you turn the AC on. You can put on a new compressor weighs less than half of the A6 doesn't need the bracket in the rear...
Forum: Pontiac - Street 02-20-2024, 03:31 AM
Replies: 12
Views: 677
Posted By Tim Corcoran
I agree about the rubber seal over the rear cap...

I agree about the rubber seal over the rear cap they are problematic and I don't use them. Some engines have a groove on the rear cap that is made for the cork seal and some are smooth like yours. SD...
Forum: Pontiac - Street 02-18-2024, 11:52 AM
Replies: 19
Views: 855
Posted By Tim Corcoran
I agree it's unlikely that it's a vacuum leak on...

I agree it's unlikely that it's a vacuum leak on two cylinders that are not side by side but can't rule it out because it seems he has pretty much eliminated everything else. I did a lot of head...
Forum: Pontiac - Race 02-16-2024, 06:45 AM
Replies: 20
Views: 1,139
Posted By Tim Corcoran
My converter stalls at 4400 on the trans brake....

My converter stalls at 4400 on the trans brake. But I don't use the trans brake because I red light every time if I do. I launch just off idle around 1100 RPM to eliminate a bog if I go right off of...
Forum: Pontiac - Street 02-15-2024, 05:09 AM
Replies: 14
Views: 2,266
Posted By Tim Corcoran
I'm curious about the difference between filling...

I'm curious about the difference between filling the heat cross over in the heads with aluminum and eliminating the cross over on the intake manifold. Wouldn't that have the same effect?
Forum: THE LOBBY 02-13-2024, 05:18 PM
Replies: 25
Views: 1,526
Posted By Tim Corcoran
My 55 Chevy 210 sedan with the 235 six and 3 on...

My 55 Chevy 210 sedan with the 235 six and 3 on the tree was super reliable good fuel economy. The only thing I ever did to it was put gas in it and replace the brushes in the generator one. Such a...
Forum: Pontiac - Street 02-13-2024, 04:56 PM
Replies: 36
Views: 1,994
Posted By Tim Corcoran
If you want torque then I would get a stroker kit...

If you want torque then I would get a stroker kit with a 4.25 stroke...
Forum: Pontiac - Street 02-13-2024, 04:39 PM
Replies: 81
Views: 4,600
Posted By Tim Corcoran
My brother in law is a chemist at Lucas oil and...

My brother in law is a chemist at Lucas oil and he develops special blended engine oil for Childress Racing, among other duties. Lucas makes some good products but also what my brother in law calls...
Forum: Pontiac - Street 02-11-2024, 05:35 PM
Replies: 16
Views: 888
Posted By Tim Corcoran
I have one like that and it works like a dream....

I have one like that and it works like a dream. Mines not from Summit it's from Power House Products but looks like the same tool
Forum: Pontiac - Street 02-11-2024, 02:16 PM
Replies: 81
Views: 4,600
Posted By Tim Corcoran
Breaking in your new engine and Break In Oil

There is a lot of controversy about how to protect your new rebuilt engine during initial start up, on the dyno, at the track or on the street. With high levels of flat tappet cam failures this has...
Forum: Pontiac - Street 02-06-2024, 04:41 AM
Replies: 52
Views: 2,305
Posted By Tim Corcoran
I would have preferred if they tested a Hy-Lift...

I would have preferred if they tested a Hy-Lift Johnson lifter rather then relying on speculation that the other brand lifters were in fact using the Hy-Lift Johnson body. Suppliers over the years...
Forum: Pontiac - Street 02-01-2024, 02:25 AM
Replies: 57
Views: 3,202
Posted By Tim Corcoran
Harold Brookshire was a great camshaft designer...

Harold Brookshire was a great camshaft designer and contributed much to the industry. Most people know him from Ultradyne Cams but he was all over the place mostly behind the scenes the brains behind...
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