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PY Online Forums - Bringing the Pontiac Hobby Together
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Posts Made By:
Stan Weiss
Forum:
Pontiac - Street
09-14-2024, 09:46 AM
Replies:
180
Dci aluminum ra 4 heads
Views:
9,586
Posted By
Stan Weiss
What I see is a number of people saying what they...
What I see is a number of people saying what they want Don to make. Don has brought 2 heads to market before this. The Tiger and his RAV. Neither of these heads is what I would call "Plug and Play"....
Forum:
Pontiac - Street
09-13-2024, 12:17 PM
Replies:
9
428 with 670 heads and 2802 cam
Views:
456
Posted By
Stan Weiss
Dennis posted his a few years ago. Stan
Dennis posted his a few years ago.
Stan
Forum:
Pontiac - Street
09-12-2024, 06:26 PM
Replies:
180
Dci aluminum ra 4 heads
Views:
9,586
Posted By
Stan Weiss
I only had a rough idea what the LS cam specs...
I only had a rough idea what the LS cam specs were. This what I got when I did a google search.
Stock LS3 Cam Specs: 204/211 duration, 0.551/0.525 lift, 117 lobe separation angle, 1.7:1 rocker arm...
Forum:
Pontiac - Street
09-12-2024, 04:17 PM
Replies:
180
Dci aluminum ra 4 heads
Views:
9,586
Posted By
Stan Weiss
If in fact these heads flow the rumored 300 cfm....
If in fact these heads flow the rumored 300 cfm. Then IMO someone replacing a stock head without doing any other changes will not be happy.
Stan
Forum:
Pontiac - Street
09-12-2024, 01:34 PM
Replies:
180
Dci aluminum ra 4 heads
Views:
9,586
Posted By
Stan Weiss
It seem people want this head to just be plug and...
It seem people want this head to just be plug and play.
So I am just curious what would you be replacing if you bought these heads
1) Basically stock or close to stock Cast Iron Heads
2)...
Forum:
Pontiac - Street
09-11-2024, 11:55 AM
Replies:
180
Dci aluminum ra 4 heads
Views:
9,586
Posted By
Stan Weiss
JMO If the intake seat ring will take it offer...
JMO If the intake seat ring will take it offer the head with an optional 2.11 intake valve. The SBC have had a 60 40 head for sometime.
Stan
Forum:
Pontiac - Race
08-27-2024, 11:59 AM
Replies:
69
Monday is Dyno Day Guess my HP & Torque
Views:
4,709
Posted By
Stan Weiss
Remember if you retard the cam all events move. ...
Remember if you retard the cam all events move.
So just what does this graph show? It shows the overlap triangle for the Crane 041 cam with 1.5:1 intake and exhaust rocker arms. With 1.65:1 intake...
Forum:
Pontiac - Race
08-19-2024, 09:32 AM
Replies:
44
Why don't wide port eheads Rev pass 7,000rpm?
Views:
2,896
Posted By
Stan Weiss
So just how much air do we need to make a given...
So just how much air do we need to make a given HP. There are no BTUs in air that is all in the fuel. Different engines may like / make HP at a different Air fuel ratio. This was done using Mike...
Forum:
Pontiac - Race
08-18-2024, 09:22 PM
Replies:
44
Why don't wide port eheads Rev pass 7,000rpm?
Views:
2,896
Posted By
Stan Weiss
Other has done it. Mike Leech made 1137.4 peak HP...
Other has done it. Mike Leech made 1137.4 peak HP @ 8400 RPM with John Marcella ported wide ports on BES' dyno
https://www.buyracingparts.com/blog/2014/07/29/mike-leech-1100hp-edelbrock-pontiac/
...
Forum:
Pontiac - Race
08-18-2024, 11:09 AM
Replies:
44
Why don't wide port eheads Rev pass 7,000rpm?
Views:
2,896
Posted By
Stan Weiss
Having looked at a number of different...
Having looked at a number of different calculations / simulations. The 340 cfm with the listed min CSA should have peak HP in the 6700-6800 RPM range on a 535 ci engine. If I remember correctly, John...
Forum:
Pontiac - Race
08-16-2024, 12:35 AM
Replies:
69
Monday is Dyno Day Guess my HP & Torque
Views:
4,709
Posted By
Stan Weiss
John, I did a google search and Sunoco purple...
John,
I did a google search and Sunoco purple 110 race gas has a specific gravity of .729
Stan
Forum:
Pontiac - Street
08-04-2024, 10:51 AM
Replies:
29
True track Hp
Views:
1,451
Posted By
Stan Weiss
This has been going on long before there was an...
This has been going on long before there was an internet.
Just for the record many times highest peak HP is not the fastest. Best average HP in the range is what you want. Most dyno sheets stop...
Forum:
Pontiac - Street
08-02-2024, 02:55 PM
Replies:
41
Help with cam selection: crower 60243 or voodoo 704?
Views:
1,955
Posted By
Stan Weiss
To get an idea of what the ramps on Pontiac cams...
To get an idea of what the ramps on Pontiac cams look like. These graphs were published by H-O Enterprises over 50 years ag0.
Stan
Forum:
Pontiac - Street
07-03-2024, 02:45 PM
Replies:
67
Quench
Views:
4,624
Posted By
Stan Weiss
Using Dr Gordon Blair's formulas. With the ONLY...
Using Dr Gordon Blair's formulas. With the ONLY difference being a 4.21" stroke and to a 3.75". The 4.21" stroke will create about 10% more squish velocity.
Stan
Forum:
Pontiac - Street
06-26-2024, 04:30 PM
Replies:
20
461 Stroker - need advice on octane
Views:
1,343
Posted By
Stan Weiss
Can you please do a cranking compression test? At...
Can you please do a cranking compression test? At your elevation I would not be surprised that it would be down 20 or more psi from what it would be at sea level.
Stan
Forum:
Pontiac - Race
06-13-2024, 09:47 AM
Replies:
213
Yoman GTO
Views:
28,039
Posted By
Stan Weiss
I just heard from Jeff Kauffman that Tommy has...
I just heard from Jeff Kauffman that Tommy has the Pontiac back in the '70 GTO
3.943 @ 190.19 April 26, 2024 Rockingham, NC 3145 lbs.
Stan
Forum:
Pontiac - Street
05-25-2024, 07:50 AM
Replies:
12
Air filter sucking in???
Views:
1,240
Posted By
Stan Weiss
Even if the secondaries open some you still might...
Even if the secondaries open some you still might have a problem with the air filter.
Stan
PS a 14 x 3 should be more than enough for your 469 ci engine. Yes double check that it is not over...
Forum:
Pontiac - Street
05-22-2024, 05:10 PM
Replies:
28
Street recipe: 670 vs. 6x-4
Views:
2,744
Posted By
Stan Weiss
Take a look at this thread ...
Take a look at this thread
https://forums.maxperformanceinc.com/forums/showthread.php?t=834245
Stan
Forum:
Pontiac - Race
05-19-2024, 10:36 PM
Replies:
2
2024 Pontiac Powered Class Racing
Views:
719
Posted By
Stan Weiss
2024 Pontiac Powered Class Racing
Route 66 NHRA Nationals
Stock Eliminator Winner
Julie Biermann D/SA '68 Firebird
Stan
Forum:
Pontiac - Street
04-22-2024, 09:07 PM
Replies:
55
1000+ cfm from a Qjet
Views:
8,528
Posted By
Stan Weiss
I was just looking a draft of an article that was...
I was just looking a draft of an article that was sent to me to review a few years ago by the late Harold Betts. It is on Quadra Jet Carbs. I don't know who owns the copyright so I will not post the...
Forum:
Pontiac - Race
04-13-2024, 12:54 PM
Replies:
31
Darin Morgan PRI ICE presents Pontiac 570" 510cfm 1250hp engine
Views:
3,444
Posted By
Stan Weiss
Paul, I don't know what engine they are talking...
Paul,
I don't know what engine they are talking about in that video. I do know that 8 or more years ago John had post Torque 870 @ 7000 and HP 1290 @ 8300.
Stan
Forum:
Pontiac - Street
04-03-2024, 12:07 PM
Replies:
21
Opinions on 400 build: 4" crank 434 or 4.25" crank 461
Views:
3,044
Posted By
Stan Weiss
Thanks. I was just having a discussion with...
Thanks. I was just having a discussion with someone over on Yellow Bullet who only likes looking at uncorrected number .
Stan
Forum:
Pontiac - Street
04-03-2024, 01:01 AM
Replies:
17
Cylinder Offset Changes Everything
Views:
1,912
Posted By
Stan Weiss
Just so you know, Suzuki does not offset its...
Just so you know, Suzuki does not offset its cranks. Honda has a 4.5mm offset. KTM and Husqvarna use 5mm of offset. Kawasaki has 8.5mm of offset, and the Yamaha YZ450F offset is 12mm.
...
Forum:
Pontiac - Street
04-02-2024, 04:30 PM
Replies:
17
Cylinder Offset Changes Everything
Views:
1,912
Posted By
Stan Weiss
Cylinder Offset Changes Everything
This video does a great job of explaining what happens as a result of offset.
https://www.youtube.com/watch?v=gwtZkHoVMso
Stan
Forum:
Pontiac - Street
03-10-2024, 03:20 PM
Replies:
33
CAM CHOICE
Views:
2,527
Posted By
Stan Weiss
If you check, both Tremec and GM rate trans by...
If you check, both Tremec and GM rate trans by torque capacity. A 750 HP SBC will not be making as much torque as your 600 HP Pontiac.
Stan
Showing results 1 to 25 of 372
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