![]() Dedicated to the Promotion and Preservation of American Muscle Cars, Dealer built Supercars and COPO cars. |
#12
|
||||
|
||||
![]()
I'm running a dead stock 1970 L-78 with hardened valve seats,11-1 compression,R43T plugs & A.I.R.,with the factory timing settings in my Chevelle.
I use 100 octane unleaded gas found at certain stations around Chicago,with no pinging,hesitation or run on at all. ![]() |
|
|