I haven't seen many replies about compression ratio I run close to 11-1 compression on pump gas so I wouldn't want anything over 34 degrees timing EVER on my engine. I wouldn't recommend any type of advance until we get all the engine specs. 40-45 degrees of advance would cause some major detonation on a high compression street/strip engine. That's where the caps start walking and the cracks start opening up
Gus
64 Plymouth Savoy 493 Indy EZ's by Nick at Compu-Flow 5-Speed Richmond faceplate Liberty box Dana 60