My 440-1 heads ran the quickest on "gas" at 35 - 36 degrees.

Switched to a Terminator on meth, and on the Dyno the best power was at 36 degrees...

They tried 34 and lost a bit, and tried 38 and it was about the same as 36, so no sense stressing the bottom end,

440 Jim did some timing testing at the track, so maybe search for his post.

Good luck!

Arnie


67 Cuda 8.48@ 158.7 mph 1.18 60' 2,600 DA(so far...) 70 Super Bee 440 Six Pack 4-speed. 13.2 @ 104 Stock exhaust/Street tires.