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Forum: Suspension TECH Yesterday, 09:57 PM
Replies: 10
Views: 318
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: 302,057
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: 56
Views: 1,170
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: 12,091
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: Heating & Cooling TECH 09-16-2024, 11:32 PM
Replies: 14
Views: 435
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: 546
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: Pontiac - Street 09-08-2024, 03:30 PM
Replies: 16
Views: 797
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: 1,104
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: 920
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: 920
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, 12:16 PM
Replies: 12
Views: 751
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: 1,194
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: THE LOBBY 09-03-2024, 04:16 AM
Replies: 29
Views: 1,194
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: Pontiac - Street 08-29-2024, 08:44 PM
Replies: 35
Views: 1,546
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: THE LOBBY 08-26-2024, 12:21 PM
Replies: 45
Views: 1,990
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...
Forum: 61-66 Big Pontiac TECH 08-20-2024, 03:29 AM
Replies: 17
Views: 791
Posted By Sirrotica
I gave him directions of how to test the ratio...

I gave him directions of how to test the ratio for a couple good reasons, can't help if he's not following them.

With a damaged transmission (no second gear), by his own admission, plus it is...
Forum: 61-66 Big Pontiac TECH 08-19-2024, 08:24 PM
Replies: 17
Views: 791
Posted By Sirrotica
This lists all the available ratios 65-69: ...

This lists all the available ratios 65-69:

https://www.teufert.net/fullsize/rearends.htm

Discussion about the very same subject:
...
Forum: 61-66 Big Pontiac TECH 08-19-2024, 02:55 PM
Replies: 17
Views: 791
Posted By Sirrotica
Easiest way to figure ratio is to mark the...

Easiest way to figure ratio is to mark the tire/brake drum on the inside. Mark the companion flange on the pinion to the axle housing, turn it one full turn, and count the pinion revolutions. I've...
Forum: Pontiac - Street 08-18-2024, 12:18 PM
Replies: 60
Views: 2,744
Posted By Sirrotica
The 9 inch ford is used in almost every circle...

The 9 inch ford is used in almost every circle track class that excludes a quick change. There are used parts floating around the oval track world for half of new, or less. You can easily lower the...
Forum: Pontiac - Street 08-17-2024, 10:01 AM
Replies: 12
Views: 554
Posted By Sirrotica
^^^^^^^^^^^^^^^^^^^^^^^^^^^^ This,...

^^^^^^^^^^^^^^^^^^^^^^^^^^^^

This, especially if you're a one man show. No chance of bending anything, been doing this way for decades as my profession. Clamp the vse grips over the edge of the...
Forum: Pontiac - Street 08-06-2024, 11:58 AM
Replies: 40
Views: 2,086
Posted By Sirrotica
The RTV is used to stop vibration that causes...

The RTV is used to stop vibration that causes brake squeal, it was common to use it especially on the D52 GM calipers to minimize brake squeal. It provides some adhesion, as well as a rubber type of...
Forum: Pontiac - Street 08-02-2024, 10:33 PM
Replies: 40
Views: 2,086
Posted By Sirrotica
Exclamation Just a suggestion, I would get a heat gun and...

Just a suggestion, I would get a heat gun and drive the car around where you're braking consistently. After 10 minutes or so take a reading on each front wheel and see if they're close to the same...
Forum: Pontiac - Race 07-21-2024, 12:47 PM
Replies: 18
Views: 874
Posted By Sirrotica
To answer your question about water going too...

To answer your question about water going too fast through a radiator, no you cannot go faster than coolant can reject heat. Coolant rejects water at the same rate of the speed of electricity, so it...
Forum: THE LOBBY 07-20-2024, 11:23 AM
Replies: 30
Views: 3,014
Posted By Sirrotica
I'm also going to miss this year, first time...

I'm also going to miss this year, first time since 1995 I didn't make it..........:mad:

Seems every vehicle I own broke down at the same time........:noidea:

I'll be shooting for 2025...
Forum: Pontiac - Street 07-13-2024, 04:37 PM
Replies: 4
Views: 429
Posted By Sirrotica
The serrations are angled so that they tend to...

The serrations are angled so that they tend to pull oil back into the crankcase as the shaft is turning. If they serrations were there to keep a seal from glazing they'd, be straight cut.

Pontiac...
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