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Search took 0.04 seconds. Search: Posts Made By: 25stevem
Forum: Pontiac - Street 04-01-2023, 03:13 PM
Replies: 18
Views: 1,796
Posted By 25stevem
Once you get this all bolted up and ready to fire...

Once you get this all bolted up and ready to fire over I would first borrow from a friend or rent from a tool rental location a rad pressure tester and just fill the cooling system with water and...
Forum: Pontiac - Street 04-01-2023, 10:52 AM
Replies: 18
Views: 1,796
Posted By 25stevem
Yup, jack up that side of the motor, but loosen...

Yup, jack up that side of the motor, but loosen up on the long thru bolt on the drivers side mount also., and also loosen up on the head pipe bolts in the exh manifold.
Forum: Pontiac - Street 03-31-2023, 06:35 PM
Replies: 11
Views: 674
Posted By 25stevem
What’s the two digit year date cast into the flat...

What’s the two digit year date cast into the flat area under the dizzy on the drivers side?

Also a 73 block would have 5 motor mount pads on each side, which is not the case for a 69 block.

The...
Forum: Pontiac - Street 03-28-2023, 06:07 AM
Replies: 10
Views: 1,027
Posted By 25stevem
The start of a Exh leak when running headers and...

The start of a Exh leak when running headers and a Exh system on the end if them is the headers getting yanked around during engine movement while supporting the Exh system.

A header should not...
Forum: Pontiac - Street 03-27-2023, 10:07 AM
Replies: 6
Views: 653
Posted By 25stevem
Jeff I have a set of those I use as a development...

Jeff I have a set of those I use as a development casting.
They are 1.96” with the normal 30 degree seat, and the exh is 1.66”.

The chambers are about 85 CCs.

Here are the stock intake and...
Forum: Pontiac - Race 03-27-2023, 07:23 AM
Replies: 27
Views: 3,324
Posted By 25stevem
Yup, I know, but still how much meat was taken...

Yup, I know, but still how much meat was taken out of the bores to get the sleeves in?
The factory engineers never dreamed that open spring pressures could be used that would need to top 600 psi.
I...
Forum: Pontiac - Street 03-24-2023, 07:47 PM
Replies: 47
Views: 4,099
Posted By 25stevem
Also please note that shops that do not have a...

Also please note that shops that do not have a crank grinding machine can NOT properly polish a Nodular iron crank.

This also rules out a often done home polishing job!

Out of this box is...
Forum: Pontiac - Street 03-24-2023, 05:10 PM
Replies: 24
Views: 2,443
Posted By 25stevem
The first thing that needs to be confirmed is...

The first thing that needs to be confirmed is that the spark plug is in the ball park for not being too cold and as full throttle is approached that it’s not too hot.
Forum: Pontiac - Street 03-24-2023, 04:52 PM
Replies: 47
Views: 4,099
Posted By 25stevem
Take a look at Franks Pontiac parts on line. He...

Take a look at Franks Pontiac parts on line.
He is in California so shipping might not be too bad.
Forum: Pontiac - Street 03-23-2023, 06:50 AM
Replies: 20
Views: 2,108
Posted By 25stevem
Assuming your stroker kit with the .030" over...

Assuming your stroker kit with the .030" over Bore gives you about 455 cid you will need a total of 98.2 CCs above the top of the piston to have the needed 10.5 compression that you want for a...
Forum: Pontiac - Street 03-20-2023, 09:32 AM
Replies: 83
Views: 6,969
Posted By 25stevem
Ha ha!

Ha ha!
Forum: Pontiac - Street 03-17-2023, 11:25 AM
Replies: 1
Views: 508
Posted By 25stevem
Wipe down the cylinders and deck surface with a...

Wipe down the cylinders and deck surface with a good coat of ATF, then pull a plastic leaf bag over it and tape it closed on the ass end of the engine stand and your good.
Forum: Pontiac - Race 03-16-2023, 06:14 AM
Replies: 14
Views: 3,280
Posted By 25stevem
That's impressive and no easy task!!!

That's impressive and no easy task!!!
Forum: Pontiac - Street 03-16-2023, 06:03 AM
Replies: 11
Views: 898
Posted By 25stevem
Your flexplate may be cracked.

Your flexplate may be cracked.
Forum: Pontiac - Street 03-15-2023, 07:29 AM
Replies: 20
Views: 1,651
Posted By 25stevem
When it's stated that a Bearing is race only that...

When it's stated that a Bearing is race only that is also in reference to how hard the surface layer is .
A race Bearing will not tolerate any crap in the oil without getting scratched up, where as...
Forum: Pontiac - Street 03-15-2023, 06:07 AM
Replies: 26
Views: 1,864
Posted By 25stevem
I have had senders that worked fine but leaked...

I have had senders that worked fine but leaked around the crimp .
Forum: Pontiac - Race 03-12-2023, 09:37 AM
Replies: 73
Views: 5,439
Posted By 25stevem
Many times it’s the basics that need to be...

Many times it’s the basics that need to be insured.

Any HEI or DUI needs a voltage never less then 13.7 and as the rpms and or the charge in the cylinders gets denser the wire powering it better...
Forum: Pontiac - Street 03-12-2023, 09:30 AM
Replies: 83
Views: 6,969
Posted By 25stevem
13 inches of hot idle vacuum sounds low to me for...

13 inches of hot idle vacuum sounds low to me for that cam and heads with a chamber volume of under 80 CCs , especially if you have a auto trans and that’s out of gear idle vacuum!
The question...
Forum: Pontiac - Race 03-12-2023, 06:45 AM
Replies: 36
Views: 3,916
Posted By 25stevem
The length of those exh rocker arms is...

The length of those exh rocker arms is frightening!

The only time I have seen rocker arms close to that long is on a 2 cycle Diesel that had exh valves and was never spun up to more then 1000...
Forum: Pontiac - Street 03-12-2023, 06:36 AM
Replies: 21
Views: 1,564
Posted By 25stevem
Edelbrock put the carbs closer together to have...

Edelbrock put the carbs closer together to have longer runners and build a more usable average torque band.

The Edelbrock duel quad is stated as having a power band of 1500 to 6500, where as the...
Forum: Pontiac - Street 03-11-2023, 06:38 PM
Replies: 21
Views: 1,564
Posted By 25stevem
Any air filter assemblys flow rate is highly...

Any air filter assemblys flow rate is highly dependent on the base it’s sitting on in terms of height above the Venturi and the radius leading to the top of the carb.

You can have a great flowing...
Forum: Pontiac - Street 03-10-2023, 06:50 PM
Replies: 43
Views: 3,981
Posted By 25stevem
The above guess sounds good to me also. It’s...

The above guess sounds good to me also.

It’s really too bad that Old’s put such crappy heads on those 403 motor’s because there Bore to Stroke ratio they have is darn good.
Forum: Pontiac - Street 03-09-2023, 08:12 AM
Replies: 143
Views: 10,565
Posted By 25stevem
Your not getting a hot motor cranked over with 36...

Your not getting a hot motor cranked over with 36 degrees of INITIAL without a ignition kill switch, is that what you had to employ?
Forum: Pontiac - Street 03-08-2023, 10:58 AM
Replies: 143
Views: 10,565
Posted By 25stevem
At small cruising type throttle openings every...

At small cruising type throttle openings every gas powered motor needs more timing because of the simple fact that it takes more time to burn those small amounts of fuel in the most complete way...
Forum: Pontiac - Street 03-08-2023, 07:41 AM
Replies: 20
Views: 1,651
Posted By 25stevem
The determining factor here is what crank you are...

The determining factor here is what crank you are running and if it’s cross drilled to oil the rods better or not.

Factory standard production 3.00” main cranks are not cross drilled so the are...
Showing results 1 to 25 of 325
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