View Single Post
  #5  
Old 04-19-2011, 01:39 PM
Steve C. Steve C. is online now
Ultimate Warrior
 
Join Date: Dec 1999
Location: Liberty Hill, Tx. (Austin)
Posts: 10,929
Default

I'm a one finger typist.... darn thing seems to be swelling a lot these days

119.6 mph

Thanks for the heads up.

Cliff I believe my notes are correct on the 108 LSA for both cams. He worked with Bullet on the cam, they like many others have found a narrow lobe separation can work well in a Pontiac. Dispite the horror stories that permeate our community in doing so. Harold used to use quite a bit of Ultradyne lobes with a 108 lobe separition but not typicaly in a flat tappet lobe, and the others were generaly on cams with more duration. Example, the old Ultradyne catalog suggests solid flat tappet cams from 255 and up were ground with a 108 lobe separation.

Related, Both Chris Mays at Comp and John Partridge at Bullet have both suggested a 108 lobe separation on my cams before. And they seemed to have worked quite well.

__________________
'70 TA / 505 cid / same engine but revised ( previous best 10.63 at 127.05 )
Old information here:
http://www.hotrod.com/articles/0712p...tiac-trans-am/

Sponsor of the world's fastest Pontiac powered Ford Fairmont (engine)
Best time 5.13 at 140 mph (1/8 mile) , true 10.5 tire, stock type suspension
https://www.youtube.com/watch?v=qDoJnIP3HgE