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Search took 0.18 seconds. Search: Posts Made By: steve25
Forum: Pontiac - Street 05-08-2024, 07:58 PM
Replies: 13
Views: 476
Posted By steve25
While the 71 96 casting heads flow good enough to...

While the 71 96 casting heads flow good enough to make 350 Hp even without headers they will not get your compression with a 400 up into the 9 to 1 range without milling them .060” on the deck and...
Forum: Pontiac - Street 05-08-2024, 06:12 PM
Replies: 58
Views: 2,136
Posted By steve25
8.750” to 9.500” should do it easy.

8.750” to 9.500” should do it easy.
Forum: Pontiac - Street 05-06-2024, 06:02 AM
Replies: 10
Views: 481
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 05-05-2024, 03:11 PM
Replies: 7
Views: 310
Posted By steve25
Use a vented cap since it will never get get...

Use a vented cap since it will never get get clogged off with age like the hose can.
Forum: Pontiac - Street 05-05-2024, 03:09 PM
Replies: 10
Views: 481
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 05-03-2024, 02:30 PM
Replies: 19
Views: 696
Posted By steve25
I am trying to find my notes from 25 years ago ...

I am trying to find my notes from 25 years ago in regards to the valve to piston clearance deal, but here’s what I recall off of the top of my head.
Using 428 pistons in a 421 build with its...
Forum: Pontiac - Street 05-03-2024, 11:30 AM
Replies: 20
Views: 775
Posted By steve25
With only 3 psi to feed even just one Carb no...

With only 3 psi to feed even just one Carb no less 3 would not run the motor to full throttle and expect nothing less then the motor falling on its face within 4 seconds.or by the time you get...
Forum: Pontiac - Street 05-03-2024, 09:31 AM
Replies: 1
Views: 121
Posted By steve25
25ft lbs will get it done. Just first confirm...

25ft lbs will get it done.
Just first confirm that all the bolts thread in easy by hand and will not bottom out without having the manifold already clamped down.
Forum: Pontiac - Street 05-01-2024, 07:42 PM
Replies: 23
Views: 838
Posted By steve25
With a 4.120” to a 4.150” bore and a 3.750”...

With a 4.120” to a 4.150” bore and a 3.750” stroke and a 72 Cc head every 4 CCs will change the compression close enough to a 1/4 point in regards to a street motor .
Forum: Pontiac - Street 04-24-2024, 11:46 AM
Replies: 37
Views: 2,210
Posted By steve25
I am sure that Rhoads does not make a living off...

I am sure that Rhoads does not make a living off of just Pontiac lifters!

People who do not use them and have over Cam’ed motors are some of the other brands that we blow into the weeds with our...
Forum: Pontiac - Street 04-21-2024, 07:29 AM
Replies: 6
Views: 495
Posted By steve25
Post 3 has the solution. To drop it out let...

Post 3 has the solution.

To drop it out let both headers dangle on there bolts as far as possible and loosen up the collectors bolts.

If you put anti-seize on at lease one side of your header...
Forum: Pontiac - Street 04-19-2024, 08:25 AM
Replies: 55
Views: 3,733
Posted By steve25
Two big fuel bowls and two needles and seats can...

Two big fuel bowls and two needles and seats can at times solve the problem of not having a pump back at the tank purely due to the fuel volume on hand.

The root cause many times is the G force...
Forum: Pontiac - Street 04-18-2024, 08:40 AM
Replies: 55
Views: 3,733
Posted By steve25
GM did not make the Q jet Rochester mainly did...

GM did not make the Q jet Rochester mainly did and then Carter for a while.

The 4 bbl test pressure has always been 1.5 hg which converts to 20.4 inches of water, not 24 inches of water.

When ...
Forum: Pontiac - Street 04-18-2024, 06:31 AM
Replies: 55
Views: 3,733
Posted By steve25
With any motor the bottom line is that at full...

With any motor the bottom line is that at full throttle , max rpm and under load a vacuum gauge will tell you if you need a higher flowing carb(s) or not.

Also too large of a carb can undue what...
Forum: Pontiac - Street 04-17-2024, 05:08 PM
Replies: 23
Views: 1,378
Posted By steve25
Bop states that it’s a 5qt pan and with a filter...

Bop states that it’s a 5qt pan and with a filter change if you do not prime the filter then add 6 qts.

So I need to ask if the upper dip stick tube was driven into the block all the way, if not it...
Forum: Pontiac - Race 04-17-2024, 07:48 AM
Replies: 14
Views: 907
Posted By steve25
What circle track class allows 540 cid?

What circle track class allows 540 cid?
Forum: Pontiac - Street 04-17-2024, 05:48 AM
Replies: 5
Views: 507
Posted By steve25
Well then run your #15s and if you can get it...

Well then run your #15s and if you can get it done local enough and afford it get the studs pinned.

If you or a buddy have a decent drill press you can do it yourself.
Forum: Pontiac - Street 04-16-2024, 04:46 PM
Replies: 1
Views: 237
Posted By steve25
I don’t know the details of that part of the set...

I don’t know the details of that part of the set up, I do know that in terms of the pedal itself auto trans cars had the chrome trim around the pedal, mt cars did not,
Forum: Pontiac - Street 04-10-2024, 06:17 PM
Replies: 35
Views: 1,781
Posted By steve25
Oh got it, thanks!

Oh got it, thanks!
Forum: Pontiac - Street 04-08-2024, 08:23 AM
Replies: 17
Views: 1,132
Posted By steve25
X72GPX it’s due to first off the longer strokes...

X72GPX it’s due to first off the longer strokes that Pontiacs have then other brands on there street production motors.

For example a 455 Buick has a 3.90” stroke as compared to the Pontiac 455...
Forum: Pontiac - Street 04-07-2024, 03:35 PM
Replies: 25
Views: 933
Posted By steve25
Good, that’s the way to work this out and you...

Good, that’s the way to work this out and you then have the needed rockers and push rods I hope, because used rockers should stay mated to there push Rod’s.

This is why Pontiac use to only supply...
Forum: Pontiac - Street 04-06-2024, 08:04 AM
Replies: 22
Views: 1,099
Posted By steve25
Other details for good cooling that often get...

Other details for good cooling that often get overlooked are hose related .
No flexible ribbed type hoses should be used since they create turbulence and that turbulence causes a restriction.
...
Forum: Pontiac - Street 04-06-2024, 07:07 AM
Replies: 67
Views: 2,920
Posted By steve25
To rule out a ignition issue get the motor up to...

To rule out a ignition issue get the motor up to act up, then out of gear bring it up to about 5400 rpm for 2 to 3 seconds.
If the motor runs clean and does not break up I would say your problem is...
Forum: Pontiac - Race 04-02-2024, 06:03 PM
Replies: 9
Views: 784
Posted By steve25
I have used successfully some darn poor looking...

I have used successfully some darn poor looking timing covers just by using a good bead of form-a- gasket on both sides of the gasket.

In fact after doing this it’s hard a hell to get the cover...
Forum: Pontiac - Street 04-01-2024, 11:24 AM
Replies: 15
Views: 785
Posted By steve25
First off you want to pull all the plugs out. ...

First off you want to pull all the plugs out.

2) kill the power to the Dizzy .
You bo not want any spark to be produced.
3) crank it over for 10 seconds.

4 dribble fuel into the fuel bowl...
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