#1  
Old 05-15-2025, 04:44 AM
steve25's Avatar
steve25 steve25 is offline
Ultimate Warrior
 
Join Date: May 2008
Location: Westchester NY
Posts: 17,523
Default

So you did a cranking compression test with all the other plugs in?

If so then now you have to do that test again or make a leak down test before you say that removing the heads is needed.

Be sure to kill the power to the HEI before making these test.

__________________
Wernher Von Braun warned before his retirement from NASA back in 1972, that the next world war would be against the ETs!
And he was not talking about 1/8 or 1/4 mile ETs!

1) 1940s 100% silver 4 cup tea server set.

Two dry rotted 14 x 10 Micky Thompson slicks.

1) un-mailed in gift coupon from a 1972 box of corn flakes.
Two pairs of brown leather flip flops, never seen more then 2 mph.

Education is what your left with once you forget things!
The Following User Says Thank You to steve25 For This Useful Post:
  #2  
Old 05-15-2025, 07:33 AM
Holeshot71's Avatar
Holeshot71 Holeshot71 is offline
Senior Chief
 
Join Date: Feb 2004
Location: MA
Posts: 455
Default

Once you get the compression sorted you should definitely get that cam advanced. The 60916 needs to be advanced most likely 4 deg to a 108 intake centerline for best performance.

__________________
'71 GTO, 406 CID, 60916, 1.65 HS, '69 #46 Heads 230CFM, 800CFM Q-jet, TH400, 12 Bolt 3.55
'72 Lemans, Lucerne Blue, WU2, T41, L78, M22, G80
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 01:46 PM.

 

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