Results 1 to 8 of 8
Thread: Ignition curve 455
Hybrid View
-
05-04-2006 #1
Rat Pack Member
- Join Date
- Dec 2004
- Location
- Morehead City, NC
- Posts
- 929
My 421 Pontiac engine is set up at 18 degrees of mech advance coming in at 2800 rpm. My total timing is 34 degrees. You most likely could go a bit higher on total timing. As much as 38 degrees works good but you will need to run 93 octane.
Mike Holleman
-
05-06-2006 #2
Registered User
- Join Date
- Feb 2002
- Location
- Bay Area CA
- Posts
- 140
www.performanceyears.com or www.classicalpontiac.com should be able to help you out immensely.
-Ian
1973 Formula 400
LS1/T56/3.73's
Daily Driven.
Reply With Quote
