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#1
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sniper timing table help?
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 |
#2
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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.)
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1966 GTO Resto-Mod. 2nd owner California car, factory Air, Power Windows, Holley Sniper Quadrajet, MSD Dual-Sync, Gearstar 200-4R, Yank 2400 Stall Converter, HGM Compushift Mini, Heidt's Tall Spindle, UMI Control Arms, Hellwig sway bars, CPP Big Brakes, AR Torque Thrust M, Continental Extreme Contact DW |
The Following User Says Thank You to RA66GTO For This Useful Post: | ||
#3
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thanks
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#4
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thanks for help
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#5
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thanks for help the efi timing tool want open for me could you try emailing? jwhitford@sstlf.com
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#6
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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.
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'71 Holden HQ Monaro - 3850lbs race weight, 400c/i - 11.4 @ 120 '66 Pontiac GTO - 389, 4 speed street cruiser |
#7
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lap top
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#8
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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.
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'71 Holden HQ Monaro - 3850lbs race weight, 400c/i - 11.4 @ 120 '66 Pontiac GTO - 389, 4 speed street cruiser |
The Following User Says Thank You to krisr For This Useful Post: | ||
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