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Forum: 70-73 Firebird & TA TECH Today, 05:21 PM
Replies: 3,072
Views: 597,936
Posted By Held for Ransom
My old TA and current Formula...

My old TA and current Formula...
Forum: Pontiac - Race Yesterday, 06:43 PM
Replies: 46
Views: 2,892
Posted By lust4speed
Usually better to start a new thread than...

Usually better to start a new thread than piggyback on an old thread, but since we're here...

Aluminum heads do handle more compression, but your 10.5:1 original spec is where you want to be for...
Forum: Electrical Tech 05-18-2025, 10:08 AM
Replies: 14
Views: 504
Posted By stellar
Research proper charging for AGM batteries, It is...

Research proper charging for AGM batteries, It is different than lead acid charging
Forum: Pontiac - Street 05-18-2025, 08:27 AM
Replies: 69
Views: 3,008
Posted By steve25
Oh I see . Your comment just seemed odd to me...

Oh I see .
Your comment just seemed odd to me because I know you know better.
Forum: Pontiac - Street 05-17-2025, 10:52 PM
Replies: 39
Views: 963
Posted By android 211
Many years ago I had a '66 442 with the Hurst...

Many years ago I had a '66 442 with the Hurst shifter that was very loose and worn. It would lock up during shifts and lock the rear tires. I'd push in the clutch and move the shift lever again and...
Forum: Suspension TECH 05-17-2025, 10:48 PM
Replies: 10
Views: 647
Posted By Lemans64
Pretty sure it's close to 2.5 to 1 or 2 3/4 -1 ...

Pretty sure it's close to 2.5 to 1 or 2 3/4 -1 not 2. Will check next time I have it running.
Forum: Pontiac - Street 05-17-2025, 10:47 AM
Replies: 69
Views: 3,008
Posted By ta man
Are both heads part number 6500?

Are both heads part number 6500?
Forum: Pontiac - Street 05-16-2025, 10:13 PM
Replies: 69
Views: 3,008
Posted By tom s
Are both heads 6500?Tom

Are both heads 6500?Tom
Forum: Suspension TECH 05-16-2025, 04:31 PM
Replies: 25
Views: 545
Posted By 78w72
I have always read & heard that the 2 holes in...

I have always read & heard that the 2 holes in the lower arm are there for water drainage, the GM manual says the end of the spring should be positioned between the 2 holes. Top of spring is centered...
Forum: Suspension TECH 05-16-2025, 01:56 PM
Replies: 25
Views: 545
Posted By JLMounce
Always wondered if that was different for 2nd...

Always wondered if that was different for 2nd gens. 1st gens have this in the upper spring perch, you sit the top pigtail in the inspection hole located in that upper spring perch. People that try...
Forum: Pontiac - Street 05-16-2025, 06:08 AM
Replies: 31
Views: 1,719
Posted By glhs#116
My opinions come from a more general deduction....

My opinions come from a more general deduction. The OEMs didn’t break in cams. They just built and delivered. Yes, those were gentle low lift cams. But also on many measures the oil was worse on the...
Forum: Suspension TECH 05-15-2025, 01:04 PM
Replies: 25
Views: 545
Posted By JLMounce
Spacers aren't really possible if the factory...

Spacers aren't really possible if the factory lower control arms are in use. The OP didn't mention whether or not the car has aftermarket control arms of any type.
Forum: Pontiac - Street 05-14-2025, 09:18 PM
Replies: 22
Views: 904
Posted By Sun Tuned
You guys are most welcome.

You guys are most welcome.
Forum: Pontiac - Street 05-13-2025, 02:43 PM
Replies: 22
Views: 904
Posted By Skip Fix
Back in the day HO Racing sold a kit to recurve...

Back in the day HO Racing sold a kit to recurve your distributor and set the clearance.
Forum: Pontiac - Street 05-13-2025, 12:05 PM
Replies: 22
Views: 904
Posted By Kenth
You don't seem to understand that if you shim the...

You don't seem to understand that if you shim the clearance too tight, the distributor gear can end up so far down that the oil pump drive pin gets stuck, and the oil pump teeth start to wear on the...
Forum: Pontiac - Street 05-12-2025, 09:55 PM
Replies: 22
Views: 904
Posted By Sun Tuned
DO NOT!! ABSOLUTELY DO NOT, use anything...

DO NOT!!

ABSOLUTELY DO NOT, use anything BUT the correct heat treated spring steel washers. They have a specific O.D. And most importantly the correct specific I.D. For the .491 GM distributor...
Forum: Pontiac - Street 05-12-2025, 02:33 PM
Replies: 22
Views: 904
Posted By Kenth
I fail to see how the gasket will change the...

I fail to see how the gasket will change the distributor gear endplay.
Please elaborate.

Btw, i have found factory endplay on NOS distributors up to .080", most were about .060" though, wich is...
Forum: Pontiac - Street 05-11-2025, 09:59 AM
Replies: 17
Views: 552
Posted By The Champ
I live in MN where ethanol is very prevalent. ...

I live in MN where ethanol is very prevalent. When available, I will run pure gas, but it is not always available while driving around in MN/WI/IA (corn country).

I've been using E10 in my GTO...
Forum: Pontiac - Street 05-11-2025, 09:20 AM
Replies: 47
Views: 4,623
Posted By steve25
I have never done an expansion test, but .002”...

I have never done an expansion test, but .002” does sound very tight.
I have always gone with .004” in the least.
Here’s what HO racing use to recommend .
Forum: Pontiac - Street 05-10-2025, 10:48 AM
Replies: 17
Views: 552
Posted By mgarblik
You will probably get dozens of opinions on gas...

You will probably get dozens of opinions on gas and oil to use in your car. I can only relate what has been working fine for me in dozens of cars/engines over the past 20 years or so without wasting...
Forum: Pontiac - Street 05-08-2025, 04:32 PM
Replies: 47
Views: 4,623
Posted By steve25
One area of the pump where I know for certain...

One area of the pump where I know for certain that pressure can be lost is in terms of how well the pump cover seal to the body because of machine marks..
Forum: 70-73 Firebird & TA TECH 05-07-2025, 11:06 AM
Replies: 493
Views: 136,889
Posted By SD455DJ
Ready to roll again as a RAIII as of this...

Ready to roll again as a RAIII as of this morning.

Dennis
Forum: 70-73 Firebird & TA TECH 05-04-2025, 07:04 PM
Replies: 493
Views: 136,889
Posted By SD455DJ
Dan & I swapped the RAIII back into the Formula...

Dan & I swapped the RAIII back into the Formula this weekend. The temporary 455HO was in the engine bay for only 10 months but was a great substitute while the YZ 400 was being rebuilt. We need to...
Forum: Pontiac - Street 05-03-2025, 07:45 AM
Replies: 33
Views: 1,495
Posted By steve25
First remove the key from the crank with a...

First remove the key from the crank with a diagonal pair of cutters taking care not to raise much of a lip, then see how easy it drops into the keyway on the crank.

It should be a light finger...
Forum: Pontiac - Street 05-03-2025, 07:28 AM
Replies: 43
Views: 1,833
Posted By 67Lemons
Unfortunately $2300 is the going rate for a set...

Unfortunately $2300 is the going rate for a set of done heads through a quality builder, I’m not at all surprised by that number. If someone were to buy a set of 6X’s for the typical used price of...
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