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Forum: Pontiac - Street Yesterday, 02:03 PM
Replies: 2,033
Views: 303,126
Posted By Sirrotica
I've seen the results of almost no angle on the U...

I've seen the results of almost no angle on the U joints, because the needles never rotate, they form grooves in the cross, causing play even when fully lubricated. Ideally slight angle will cause...
Forum: Pontiac - Street Yesterday, 01:39 PM
Replies: 12
Views: 206
Posted By Sirrotica
For the 69 Firebird style mounts with the 1/2...

For the 69 Firebird style mounts with the 1/2 inch bolt you could do it 3 ways.

1) Stack fender washers between the mount and the frame.

2) Find some front end shims with 1/2 inch opening to...
Forum: THE LOBBY 09-24-2024, 08:43 PM
Replies: 153
Views: 12,440
Posted By Sirrotica
Thats, been my experience as well. The house...

Thats, been my experience as well.

The house I purchased 3 years ago has a 30x40x8 garage, a 32x48x10 pole building with a lean to shed off of the back of the garage, it measures 24x30. A...
Forum: Pontiac - Street 09-24-2024, 01:44 PM
Replies: 9
Views: 454
Posted By Sirrotica
Working in many GM dealerships over the years we...

Working in many GM dealerships over the years we always put 2 in new car preps.

The idea of using them is to head off seepage and minor cooling system leaks before they become a problem, causing...
Forum: THE LOBBY 09-24-2024, 01:13 PM
Replies: 153
Views: 12,440
Posted By Sirrotica
They always look so big, until you start putting...

They always look so big, until you start putting stuff inside..........LOL
Forum: Pontiac - Street 09-24-2024, 01:10 PM
Replies: 4
Views: 258
Posted By Sirrotica
Look at this link to Don Terrill's Speed Talk: ...

Look at this link to Don Terrill's Speed Talk:

https://www.speed-talk.com/forum/viewtopic.php?t=36327&start=15

It talks about Elgin lifters, and where they are sourced from, as well as other...
Forum: Suspension TECH 09-23-2024, 09:57 PM
Replies: 10
Views: 408
Posted By Sirrotica
If the shoes are hanging up on the rust ridge,...

If the shoes are hanging up on the rust ridge, you will not be able to rotate the drum when it's to the position where it hangs up. If you can still rotate the drum, then it's hung up on the end of...
Forum: Pontiac - Street 09-23-2024, 04:17 PM
Replies: 2,033
Views: 303,126
Posted By Sirrotica
Over the years I've built a bunch of modified...

Over the years I've built a bunch of modified exhaust systems, the H pipe is what I've found takes away the annoying tones, and crackling. The crossover pipe needs to be smaller diameter than the...
Forum: THE LOBBY 09-23-2024, 12:04 PM
Replies: 67
Views: 2,156
Posted By Sirrotica
My prayers go out to the survivors. Even...

My prayers go out to the survivors.

Even though I only knew him from this site, I'll miss his postings. We all have the Pontiac thing in common, and I'm glad I crossed paths with him.

You'll...
Forum: THE LOBBY 09-21-2024, 01:55 PM
Replies: 153
Views: 12,440
Posted By Sirrotica
I think the best concrete floor system I've seen...

I think the best concrete floor system I've seen for strong floors is the tensioned cable system. They pull crossed cables tight before the pour, then after it cures, they release the tension keeping...
Forum: Pontiac - Race 09-18-2024, 08:33 PM
Replies: 1
Views: 190
Posted By Sirrotica
There's no set amount, all depends on amp draw of...

There's no set amount, all depends on amp draw of the winch, and amperage/condition of the battery. Slope of the ramps and drag of the vehicle being winched. Disc brakes usually pull harder than drum...
Forum: Heating & Cooling TECH 09-16-2024, 11:32 PM
Replies: 14
Views: 465
Posted By Sirrotica
On the old brass radiators often, there was a tin...

On the old brass radiators often, there was a tin U shaped channel soldered between the tanks for stiffness. If that's what you're talking about I guess 2 holes wouldn't affect the integrity, but you...
Forum: Pontiac - Street 09-16-2024, 11:17 PM
Replies: 14
Views: 565
Posted By Sirrotica
Cometic lists them for a 3.750 bore, but they...

Cometic lists them for a 3.750 bore, but they ain't cheap, $197.88 a pair before tax at Jegs.

If you could find head gaskets for a 1980-81, 265 (smaller brother of the 301) they are also for a...
Forum: Suspension TECH 09-16-2024, 09:22 PM
Replies: 8
Views: 521
Posted By Sirrotica
The cross shaft and bushings changed from what I...

The cross shaft and bushings changed from what I can tell. The arm is the same geometry, just the holes that the bushings mount in is changed and the cross shaft is slightly different in length.

I...
Forum: Suspension TECH 09-16-2024, 08:30 PM
Replies: 8
Views: 521
Posted By Sirrotica
According to this article, any 70-81 F body will...

According to this article, any 70-81 F body will interchange as long as you have the cross shaft with the assembly. Unless you're going for show points for correctness other parts will interchange.
...
Forum: Pontiac - Street 09-08-2024, 03:30 PM
Replies: 16
Views: 818
Posted By Sirrotica
Or, if you run a TP by pass oil filter, the...

Or, if you run a TP by pass oil filter, the filter removes the water from the oil and holds on to it. Water is needed to form acid, so if the water is removed acid doesn't form.

The acid forms...
Forum: Pontiac - Street 09-06-2024, 08:13 PM
Replies: 22
Views: 1,136
Posted By Sirrotica
In the past I've used Lares rag joints on my...

In the past I've used Lares rag joints on my daily drivers, no complaints. Mine didn't come with a ground strap though.

https://www.larescorp.com/select/Pontiac/Firebird/1967/6.6L%20400CID%20V8/
...
Forum: Pontiac - Street 09-04-2024, 05:12 PM
Replies: 29
Views: 945
Posted By Sirrotica
There is absolutely no need to use right stuff,...

There is absolutely no need to use right stuff, as I said, GM substituted black RTV, and later on GMS red RTV. I never use right stuff because it is really difficult to remove.

I've taken dozens...
Forum: Pontiac - Street 09-04-2024, 03:25 PM
Replies: 29
Views: 945
Posted By Sirrotica
In 1973 GM/Pontiac was one of the first...

In 1973 GM/Pontiac was one of the first manufacturers to use RTV as a gasket replacement. That application was for the Pontiac valley cover gasket.

I always bought GM gaskets from the local...
Forum: THE LOBBY 09-04-2024, 03:12 PM
Replies: 12
Views: 769
Posted By Sirrotica
By the same token I used to use Herb Adams...

By the same token I used to use Herb Adams technical articles written in the 70s and 80s to help me tune the suspension on my dirt track cars. A lot of the science and information can be cross...
Forum: THE LOBBY 09-04-2024, 12:16 PM
Replies: 12
Views: 769
Posted By Sirrotica
Skip, there is a magazine similar to the old...

Skip, there is a magazine similar to the old circle track currently published that is monthly and has a lot of technical articles in it still. It's called Speedway Illustrated, I have a subscription...
Forum: THE LOBBY 09-04-2024, 12:07 PM
Replies: 29
Views: 1,233
Posted By Sirrotica
My floor was nowhere near thick enough. 3-4...

My floor was nowhere near thick enough. 3-4 inches. I'm presently in the process of pouring 2 slabs for footers for my lift. The opening I cut is 3'X3', and I undermined the existing slab by 6...
Forum: 60 & Older Pontiac TECH 09-04-2024, 11:39 AM
Replies: 14
Views: 653
Posted By Sirrotica
A member on here specializes in older ignition...

A member on here specializes in older ignition systems and has a lot of obsolete older parts for them. His member name is "Sun Tuned". You might reach out to him to see if he can help you out with a...
Forum: 60 & Older Pontiac TECH 09-03-2024, 07:04 PM
Replies: 14
Views: 653
Posted By Sirrotica
A larger heat rejection area is increasing the...

A larger heat rejection area is increasing the area that is exposed to air, I.E. would be a larger/thicker radiator, more surface area.

Increasing the volume of a cooling system by using a...
Forum: THE LOBBY 09-03-2024, 04:16 AM
Replies: 29
Views: 1,233
Posted By Sirrotica
My 12,000 Lb. is symmetrical, I set it 12 feet on...

My 12,000 Lb. is symmetrical, I set it 12 feet on center from the front wall.

I have some long chassis dually trucks that I want plenty of room for.
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