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Forum: Pontiac - Street 05-07-2024, 06:59 AM
Replies: 10
Views: 523
Posted By Cliff R
In a perfect World it does NOT matter how much...

In a perfect World it does NOT matter how much pre-load you give a hydraulic lifter as long as it falls somewhere in the range of the plunger travel.

So in theory you could set them to zero...
Forum: Pontiac - Street 05-06-2024, 07:50 PM
Replies: 10
Views: 523
Posted By 1971455HO
Thanks a lot to all of you guys. Great...

Thanks a lot to all of you guys. Great information. Your comments and experience is very appreciated. I'm now understanding how rocker ratio plays in to the adjustment procedure. And understanding...
Forum: Pontiac - Street 05-06-2024, 06:02 AM
Replies: 10
Views: 523
Posted By steve25
You shoukd also consider the fact that aluminum...

You shoukd also consider the fact that aluminum heads when fully up to temp will grow taller by .006" to .008" thus releaving some of your preload adjustment.

If you assume that you have perfect...
Forum: Pontiac - Street 05-06-2024, 01:24 AM
Replies: 10
Views: 523
Posted By Schurkey
.031625 X 1.5 = .0474 But with .120 plunger...

.031625 X 1.5 = .0474

But with .120 plunger travel, it won't matter.
Forum: Pontiac - Street 05-05-2024, 05:29 PM
Replies: 10
Views: 523
Posted By 1971455HO
Thank you Shurkey....I can do all of that. To...

Thank you Shurkey....I can do all of that.
To answer steve25...Yes, the engine has ran and is fully assembled except the valve covers are off so I can adjust the valves after swapping rocker arms. I...
Forum: Pontiac - Street 05-05-2024, 05:19 PM
Replies: 10
Views: 523
Posted By Tim Corcoran
Even for a street car 1/2 turn isn't the golden...

Even for a street car 1/2 turn isn't the golden rule. Lifter companies recommend setting them at 1/2 the travel and they all have different amounts of travel. but some lifters make noise and you can...
Forum: Pontiac - Street 05-05-2024, 03:17 PM
Replies: 10
Views: 523
Posted By Schurkey
I don't think it's anywhere near as critical as...

I don't think it's anywhere near as critical as some folks have made it out to be.

How much lifter plunger travel do your lifters have? I've seen OEM lifters with more than a quarter-inch of...
Forum: Pontiac - Street 05-05-2024, 03:09 PM
Replies: 10
Views: 523
Posted By steve25
Is your valley pan and Intake on the motor. ...

Is your valley pan and Intake on the motor.

Has the motor been run before, or are the lifters empty?
Forum: Pontiac - Street 05-05-2024, 02:41 PM
Replies: 10
Views: 523
Posted By 1971455HO
Thank you so much Shurkey. That did not occur to...

Thank you so much Shurkey. That did not occur to me. All my life everybody said just turn it 3/4 turn and your done. You are Right sir.

I am now thinking, set up a dial caliper on top of the...
Forum: Pontiac - Street 05-05-2024, 04:01 AM
Replies: 10
Views: 523
Posted By Schurkey
That's .031 at the adjuster nut. Not .031 at the...

That's .031 at the adjuster nut. Not .031 at the lifter plunger where it matters. You're not taking rocker ratio into account. The lifter plunger is being depressed more than .031.


Yes, IF...
Forum: Pontiac - Street 05-04-2024, 09:41 PM
Replies: 10
Views: 523
Posted By 1971455HO
Changing Roller Rocker Arms: Setting Pre-Load on Pumped Up Hydraulic Roller Lifters

I realize most of you know this about pumped up lifters, I just want to be sure.

Can I adjust my rocker arms to zero lash, then set my preload to the recommended .025" - .035" (Morel Roller Lifter...
Forum: Pontiac - Race 04-29-2024, 06:30 PM
Replies: 11
Views: 499
Posted By John Langer
Chevy bolts up to an ati balancer.

Chevy bolts up to an ati balancer.
Forum: Pontiac - Race 04-29-2024, 05:48 PM
Replies: 11
Views: 499
Posted By slowbird
Moroso make one that works with a Pontiac...

Moroso make one that works with a Pontiac balancer? Or you you using a Chevy one?
Forum: Pontiac - Race 04-29-2024, 04:51 PM
Replies: 11
Views: 499
Posted By John Langer
Commonly called a front drive kit. This allows...

Commonly called a front drive kit. This allows you to mount multiple pulleys to the front of the motor at the same time and space them as necessary for an oil pump, vacuum pump, alternator, etc.
Forum: Pontiac - Race 04-28-2024, 07:16 PM
Replies: 11
Views: 499
Posted By 73LeMans
Yup, Jones racing products will sell you one too....

Yup, Jones racing products will sell you one too. Its in their catalog under Drive Hubs

Jones Racing Drive hubs (https://www.jonesracingproducts.com/#p=4)
...
Forum: Pontiac - Race 04-28-2024, 10:56 AM
Replies: 11
Views: 499
Posted By Mean Green
The Star Machine mandrel has what you're looking...

The Star Machine mandrel has what you're looking for.
Forum: Pontiac - Street 04-20-2024, 08:49 AM
Replies: 20
Views: 792
Posted By HWYSTR455
I've been using Derale lately (dual w shroud),...

I've been using Derale lately (dual w shroud), work good, but still a little on the low cfm side. I think they are 4000cfm max, together, can find others that work well. They are pretty flat too, and...
Forum: Pontiac - Street 04-17-2024, 05:32 PM
Replies: 23
Views: 1,452
Posted By Sirrotica
Only 1 year did Pontiac use 6 quarts, 1967, 6 in...

Only 1 year did Pontiac use 6 quarts, 1967, 6 in the pan, and 1 in the filter. In 1970 I worked at a Pontiac dealer on the grease rack while doing co-op in my last year as a senior in high...
Forum: Pontiac - Street 01-27-2024, 07:06 AM
Replies: 53
Views: 3,483
Posted By steve25
Once you get on the increased HP highway most of...

Once you get on the increased HP highway most of us get power hungry so go with 1/2” tubing and line and don’t look back.
Forum: Pontiac - Street 01-08-2024, 10:14 PM
Replies: 4
Views: 658
Posted By slowbird
5 to 1. So in my case 2.5 gal water 1/2 gal...

5 to 1. So in my case 2.5 gal water 1/2 gal simple green. Worked great. This method was recommended to me by a friend and he has soaked up to 3 days.
Forum: Pontiac - Street 01-08-2024, 09:43 PM
Replies: 4
Views: 658
Posted By b-man
How many parts water to the Simple Green? ...

How many parts water to the Simple Green?

I’ve been using the regular stuff at full-strength to degrease and remove oxidation on parts, but you have to be careful because it can etch and even...
Forum: Pontiac - Street 01-08-2024, 09:36 PM
Replies: 4
Views: 658
Posted By slowbird
Cleaning aluminum heads

I picked up a set of used Edelbrock d-port heads. Was looking for an easy way to clean them and found a fairly trouble free and cheap way, Simple Green heavy duty cleaner did the trick. I had a...
Forum: Pontiac - Street 01-08-2024, 12:04 PM
Replies: 22
Views: 1,276
Posted By JLMounce
That's interesting. For starters, the Viking...

That's interesting. For starters, the Viking shock lineup at Speedtech will likely be replaced by QA1 shocks. That's kind of a no-brainer.

Speedtech has been trying to do more full chassis...
Forum: Pontiac - Street 12-31-2023, 12:20 PM
Replies: 111
Views: 5,622
Posted By Gach
Its been #1 racing oil sold, for years and why...

Its been #1 racing oil sold, for years and why so many engine builder’s recommended it…. has zinc and no detergents. Anti foaming agent. I’m probably not going do a good job on explaining it,...
Forum: Suspension TECH 12-05-2023, 02:01 PM
Replies: 31
Views: 2,450
Posted By JLMounce
Manual Brakes

Call me a believer.

For 10 years or so and specifically in the last 3 years I have really chased performance issues with the braking of my Firebird. It had basic stock type components on it to...
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