#1  
Old 10-16-2023, 12:54 PM
GOAT8U2's Avatar
GOAT8U2 GOAT8U2 is offline
Chief Ponti-yacker
 
Join Date: Mar 2003
Location: Prospect Hts, IL
Posts: 896
Default

For a Ponti head newb like me that reads a thread like this...

What's the most a High Port cfm has shown without moving the valve?

Is the Tiger 2 the newest version or is there something coming out after the new foundry team up?

What is the Tiger 2 rough max cfm without valve moved?

Everyone still agree cfm x2 is potential power for an engine on gas? That dyno chart looks higher than that if they're mid 450cfm heads.

Thanks

__________________
69 GTO Convertible, 4000lbs
462ci, 606tq/569hp - 93 oct @ 34 deg (207psi)
11.7:1, KRE H Ports, Lunati HR 282/290 w Johnson Lifters & 1.65 Scorp, E30, EFI, Holley HP + Dual Sync, 12-1 Crank Trig, 120lb Inj & 1000cfm TB, Torker II EFI Int & Rails, PTC 10", Rock Valley SS Tank, Dual 450s, Aerom EFI Reg, Aero Front & Wilwood Rear Disc Brakes, Dougs 1 7/8" & Borla Pro XS 3", Alum Rad & Dual Fans, 12:1 Box, UMI Arms & Viking Berz Fr + Rear CO Shocks, Hella UP5.0 Vac Pump, 12 Bolt, 3.73, 33 Spline
  #2  
Old 10-16-2023, 01:16 PM
Stan Weiss's Avatar
Stan Weiss Stan Weiss is offline
Ultimate Warrior
 
Join Date: Jul 2013
Location: Philadelphia, PA
Posts: 5,338
Default

Quote:
Originally Posted by GOAT8U2 View Post
For a Ponti head newb like me that reads a thread like this...

What's the most a High Port cfm has shown without moving the valve?

Is the Tiger 2 the newest version or is there something coming out after the new foundry team up?

What is the Tiger 2 rough max cfm without valve moved?

Everyone still agree cfm x2 is potential power for an engine on gas? That dyno chart looks higher than that if they're mid 450cfm heads.

Thanks
I like to use 2.2 but any number is just a very rough guess.

John's head were 466 so ► 1134 / 466 = 2.43348 I have seen dyno sheets for other engines around 2.5.

Calvin Hill got 420 cfm from KRE HP with a 2.20" intake valve.

Stan

__________________
Stan Weiss/World Wide Enterprises
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
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -4. The time now is 09:05 AM.

 

About Us

The PY Online Forums is the largest online gathering of Pontiac enthusiasts anywhere in the world. Founded in 1991, it was also the first online forum for people to gather and talk about their Pontiacs. Since then, it has become the mecca of Pontiac technical data and knowledge that no other place can surpass.

 




Copyright © 2017