[jwhit]

trying to wrap my head around sniper timng table to add in what vacum advance would add
im running sniper dist so it full timing controll on my 350 with small vodoo cam
#16 heads with 2.11/1.77 72cc 9.5to 1 comp
car runs good right now with 12 int timing and total timing 36 but i feel like
not getting the most out of motor since cruze timing is very conservitive
i read about guys adding as much as 14degrees of timing at cruze with great results but im a little lost how to make timing table work out to get it where it needs to be set at to work with out adding to much timing in wrong spot
any help would be great

[RA66GTO]

Couple of resources here that may help you. The Timing Table Generator (remove the *.txt) was orginally created by Justin M. Lloyd, revised by Candu SNO, and further modified by myself. (Got to give Credit where it is due.)

[jwhit]

Originally Posted by RA66GTO

Couple of resources here that may help you. The Timing Table Generator (remove the *.txt) was orginally created by Justin M. Lloyd, revised by Candu SNO, and further modified by myself. (Got to give Credit where it is due.)

thanks

[jwhit]

thanks for help

[jwhit]

thanks for help the efi timing tool want open for me could you try emailing? jwhitford@sstlf.com

[krisr]

Are you using the 3.5" hand held to tune or the laptop cable with the Holley software? Pro tip, the hand held is good enough to get it started. Not good enough to tune it.

[jwhit]

lap top

[krisr]

Originally Posted by jwhit

lap top

OK. Datalog your cruising RPM/MAP cells, for example if you're cruising at 2500rpm and 40kpa, try about 42* timing from 2250rpm --> 2750rpm and 38kpa all the way to the lowest vacuum cell. Then highlight the last 42* cells and go 3-4 cells past that and blend so the timing ramps away under a) load and b) faster/slower RPM. I don't have my tuning laptop near me (in hospital atm, heart failure... ergh) but I vaguely recollect running 44* timing in my 400 Pontiac with edelbrock heads. My turbo LS3 runs about 45* timing at cruise and I recently did a turbo 5.3 LS with a Holley Terminator and it was happy with about 42* timing at cruise.

I found from my experience with tuning over the years, make your spark tables smooth and transition through curves. Your fuel table doesn't need to be smooth. The intake tract is jerky as hell and will change air speed all the time but definitely pay attention to spark table cleanliness.