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Jan 25, 2010 | 05:50 PM

#21

gingerbreadman1977

Drifting

Joined: Apr 2006

Posts: 1,911

Likes: 2

From: gold coast queensland

Quote:

Originally Posted by Sweet

I want to make sure the I understand.
If at idel I am at 10 degrees and at full advance I'm at 32 degrees. I change my idle timing up 2 degrees to 12 degrees my total advance will go from 32 to 34 degrees and if I go to 14 at idle, total will go to 36. Is this correct.

as driveshaft said that is correct. now just for an example lets say you do go up too 14 initial and thats the total of 36 but you find your motor could still do with more initial then 14 (i think it does)as alot of motors in the 400 hp+ motors do like about 18-22 then of course thats going to make your total sky high around 42 . this is why msd,s and other distributors have different stop bushings to limit the total advance.

your motor sounds a little similar to the one in my camaro . similar compressioned,hp,383. after finishing it i ran it on 12 initial and 34 total for break in...yes i had run on. i adjusted my initial to 16-18 on the balancer and i installed the msd black bushing which limits centrifugal advance to 18 (dont quote me but its around that) and then i had no signs of run on again.

i did not have to adjust any carb settings and i dont run vacum advance.

Last edited by gingerbreadman1977; Jan 25, 2010 at 05:59 PM.