Hot Rod Forum : Hotrodders Bulletin Board - View Single Post - Timing curve recommendation
View Single Post
  #1 (permalink)  
Old 06-24-2009, 11:29 AM
PatM PatM is offline
Registered User
Join Date: Nov 2004
Location: California
Age: 73
Posts: 840
Wiki Edits: 0

Thanks: 31
Thanked 27 Times in 24 Posts
Timing curve recommendation

I am trying to plan a timing curve prior to lite-off on my engine. This is a 383 with a 60,000V HEI (M.I.C.), no MSD, single pattern Hydraulic roller 224*@.050, 9.1:1 compression with older (just prior to the eliminator series) AFR heads. I am fortunate to have a distributor machine, so I can calibrate whatever seems right. Based on compression and cam timing (I suppose) BG Tech recommended 14* initial timing. My distributor curently produces 19-20* mechanical advance, all in at about 3100-3200 RPM. Vacuum too, of course, which I seem to recall is about 14* total. (Don't recall the signal levels for the vacuum can.)

As you'd probably guess, the primary use here is as a street engine, but I'll race it (at Infineon) at least once, someday. This all seems to be pretty close to where I should be, I think. Would any of you experts recommend a change, and if so, what change do you recommend and why?

Reply With Quote