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Forum: Suspension TECH Yesterday, 09:57 PM
Replies: 10
Views: 300
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 Yesterday, 04:17 PM
Replies: 2,021
Views: 302,010
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 Yesterday, 12:04 PM
Replies: 50
Views: 1,031
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: 146
Views: 12,081
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: 174
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: 430
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: 542
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: 487
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: 487
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: 795
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: 1,103
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: 919
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: 919
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: 750
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: 750
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: 1,192
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: 639
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: 639
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: 1,192
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.
Forum: 60 & Older Pontiac TECH 09-01-2024, 03:17 PM
Replies: 6
Views: 222
Posted By Sirrotica
The heater unit was under the seat on those cars,...

The heater unit was under the seat on those cars, those are heater hoses. Only way I know this is from owning a 56, many years ago.

I imagine if you weren't too concerned with originality that the...
Forum: Pontiac - Street 08-30-2024, 12:18 AM
Replies: 35
Views: 1,545
Posted By Sirrotica
:thumbup: :welcome:

:thumbup: :welcome:
Forum: Pontiac - Street 08-29-2024, 08:44 PM
Replies: 35
Views: 1,545
Posted By Sirrotica
Old mechanics trick when you believe that there...

Old mechanics trick when you believe that there may be dirt in one of the circuits. Rev the engine to about 2500-3000 RPM, and slam the choke blade shut as you open, and close the throttle by hand....
Forum: 60 & Older Pontiac TECH 08-29-2024, 11:51 AM
Replies: 14
Views: 639
Posted By Sirrotica
Could be 50 reasons why it overheats, but rough...

Could be 50 reasons why it overheats, but rough running needs to be addressed first.

Timing, or lean fuel mixtures will cause an engine to overheat also. My recommendation would be to get the...
Forum: 66-67 GTO Tempest & LeMans TECH 08-27-2024, 07:32 PM
Replies: 3
Views: 314
Posted By Sirrotica
Common sense says which, direction the torque is...

Common sense says which, direction the torque is forcing the axis (pivot bolt) needs more rubber to cushion the force as well as wear longer.

If you've replaced as many bushings over 5 decades as...
Forum: THE LOBBY 08-26-2024, 12:21 PM
Replies: 45
Views: 1,988
Posted By Sirrotica
Crapsman is now owned by Stanley, I just bought 2...

Crapsman is now owned by Stanley, I just bought 2 sets (metric/standard) of their extra long 6 point combination wrenches after doing a ton of research. Lowes gets $75 for each set. They also are...
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