Pontiac - Race The next Level

          
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  #21  
Old 10-17-2025, 02:11 PM
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Quote:
Originally Posted by PAUL K View Post
Hard question to answer.... Generally it's well worth the effort to bring that piston close to the head .... Unless it's a power adder build.


its going in my sons 64, although he did want nitrous...i talked him out of that and gapped the rings to the tighter tolerence to match. lol i tried to talk him out of this cam as well but i guess i lost out on that. im picking up my 400 block today so i guess ill price getting it decked an weigh my free labor and decking cost to no labor and 250.00 gasket cost lol.

  #22  
Old 10-18-2025, 01:49 PM
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Dave Vizard and Stan Weiss have a cam selecion SOFTWARE tool to optimize your combo.

Like $20 +$45 to rent for 2weeks or $350 to own. I will probably rent the SW to optimize my 421 for high-TQ Tow, mpg, least intense cam lobe life.

Got 2 good cores to grind into the ideal profile. Got 1 unused cam that might be close enough.

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Sold 2023: 12.24/111.6MPH/1.76 60'/28"/3.54:1/SP-TH400/469 R96A/236-244-112LC/1050&TorkerI//3850Lbs//15MPG/89oct
Sold 2003: 12.00/112MPH/1.61 60'/26"x3.31:1/10"/469 #48/245-255-110LSA/Q-Jet-Torker/3650Lbs//18MPG 94oct
Sold 1994: 11.00/123MPH/1.50 60'/29.5"x4.10:1/10"/469 #48/245-255-110LSA/Dual600s-Wenzler/3250Lbs//94oct
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  #23  
Old 10-18-2025, 04:50 PM
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I have a Comp roller that was ordered on a 110 LSA and +4 advanced. When I degreed it, several times, it was actually-4 degrees. Never would I not degree a cam.

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  #24  
Old 10-18-2025, 05:26 PM
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Originally Posted by Jack Ferris View Post
I have a Comp roller that was ordered on a 110 LSA and +4 advanced. When I degreed it, several times, it was actually-4 degrees. Never would I not degree a cam.


jack, this cam in this thread is your old cam i bought from you....ions ago lol

  #25  
Old 10-19-2025, 09:50 PM
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Quote:
Originally Posted by Half-Inch Stud View Post
Dave Vizard and Stan Weiss have a cam selecion SOFTWARE tool to optimize your combo.

Like $20 +$45 to rent for 2weeks or $350 to own. I will probably rent the SW to optimize my 421 for high-TQ Tow, mpg, least intense cam lobe life.

Got 2 good cores to grind into the ideal profile. Got 1 unused cam that might be close enough.
Mark,
The software only does SBC, SBF, and BBC with LSx in the works.

Stan

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Offering Performance Software Since 1987
http://www.magneticlynx.com/carfor/carfor.htm
David Vizard & Stan Weiss' IOP / Flow / Induction Optimization - Cam Selection Software
http://www.magneticlynx.com/DV
Download FREE 14 Trial IOP / Flow Software
http://www.magneticlynx.com/DV/Flow_..._Day_Trial.php
Pontiac Pump Gas List
http://www.magneticlynx.com/carfor/pont_gas.htm
Using PMD Block and Heads List
http://www.magneticlynx.com/carfor/pont_pmd.htm
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  #26  
Old 10-20-2025, 07:54 AM
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Stan,
I assume to put my Pontiac 428 parameters in,head info in, then see the recommended cam profile ( forgettabout the CompCam PN). I can get a couples stock cores re-ground to that.

Right?

  #27  
Old 10-20-2025, 10:53 AM
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Quote:
Originally Posted by Half-Inch Stud View Post
Stan,
I assume to put my Pontiac 428 parameters in,head info in, then see the recommended cam profile ( forgettabout the CompCam PN). I can get a couples stock cores re-ground to that.

Right?
Mark,
This program doesn't work like that. This a print screen from the LSx hydraulic roller cam under development. The whit background are inputs and the yellow backgrounds are outputs.

Stan
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Offering Performance Software Since 1987
http://www.magneticlynx.com/carfor/carfor.htm
David Vizard & Stan Weiss' IOP / Flow / Induction Optimization - Cam Selection Software
http://www.magneticlynx.com/DV
Download FREE 14 Trial IOP / Flow Software
http://www.magneticlynx.com/DV/Flow_..._Day_Trial.php
Pontiac Pump Gas List
http://www.magneticlynx.com/carfor/pont_gas.htm
Using PMD Block and Heads List
http://www.magneticlynx.com/carfor/pont_pmd.htm
  #28  
Old 10-22-2025, 11:00 PM
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what is the better situation?

with the pistons .020 in the hole, and a .038 edelbrock gasket this motor would be at 10.4 or 10.5 cr with piss poor quench area but the dynamic compression would be below 9.

with .027 cometics it would be at 10.8 cr and 9.07 dynamic.

which is the worse of the 2 evils? hoping it can be ran on premium pump gas, but this car maybe doing the e85 bit as well

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