Pontiac - Race The next Level

          
 
 
Thread Tools Display Modes
Prev Previous Post   Next Post Next
  #18  
Old 10-17-2025, 07:19 AM
PAUL K's Avatar
PAUL K PAUL K is offline
Ultimate Warrior
 
Join Date: Feb 2004
Location: Sugar Grove IL USA
Posts: 7,441
Default

Quote:
Originally Posted by performerrpm View Post
after re checking, from what i measured i came up with these numbers.


[email protected]/279@050

intake open 33° btdc close at 58° abdc
exhaust open 67° bbdc close at 32 atdc

intake centerline 101.5°

the screenshot is summits calculator, and it looks to be a degree different than mine but i figure thats just error from my eyes and to close to matter. what is confusing is the exhaust centerline. no matter what i do i get 155° and 65° .050 before and after peak exhaust lift. divided by 2 gives me 110 centerline but summits calculator gets 107. when i go to 110 on the degree im at peak lift, but it also stays at peak lift right down to about 106.5° ish.

i mean i guess the small amount its off probably wont affect it one way or the other though...i hope
Looks like your doing good..... If it's still set up check the numbers fifty thousandth before and after peak lift .... Those are the ones that will tell you the lobe centerline..... It's normal to be off a number or two from the cam card

__________________
Go fast, see Elvis!
www.facebook.com/PaulKnippensMuscleMotors
The Following User Says Thank You to PAUL K For This Useful Post:
 


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 06:35 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