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Old 10-07-2007, 03:30 PM
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timing 14 to 16

I was wondering what would happen if I bump timing from 14 to 16 what would the effect be, I know the cam will do it. I can experiment but it is a pain with the mallory I have and it is raining today. The car runs fine at 14 but would 16 give it more getup of the line? I should have given it more stall 2500 need 2800 or 3000.
355 trickflow heads 62cc 195 2.02 1.06, 480/492 228/234 110. holley 750 rpm airgap. 36 total

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Old 10-07-2007, 03:47 PM
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if your timing is 14 inital and 36 total then you would want to recurve the distributor to shorten the advance amount to allow experimenting with increased initial advance without excessive total advance.

Why not temperailry lock out the mechanical advance and try 34 to 36deg full time timing ( no mechnical advance) and see if your drag times improve and work from there. It not that hard to do and easily restored back.

A 3500stall and a good bit of rear gear would be the best.

You want to launch the car with the motor well up on the torque curve around 500rpm less than the peak torque rpm point (torque converter stall speed). You want the engine to reach maximum horsepower rpm thru the traps or just slightly beyond that rpm for best drag performance without over reving the motor. (rear gear ratio)

Last edited by F-BIRD'88; 10-07-2007 at 03:53 PM.
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Old 10-07-2007, 04:28 PM
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yea

I have the 4.11 but not the stall. I would experiment but to do the mechanical timing with the mallory I have to almost completely take it apart. It is easier to do with it out of the car. Does not sound that but but I drive the car to and from the strip 120mi. I know complain complain complain.
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Old 10-07-2007, 04:45 PM
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You can temp lock out the advance at the strip when ya get there.
Do a base line run with it as is. Then temp lock out the advance and test it.
Are your advance weights on top under the rotor like a GM HEI or down in the distributor body like a Accel?


I run mine locked out all the time. I also drive it to the track and back.
My cam is a little bigger duration than yours but not a lot, and really wants this full time locked out timing. Usualy its just the vacuum advance that needs to be readjusted to allow locked out timing on a street car like yours and mine with fairly healthy cam timing.. and a street able compression ratio.

I'm not saying you have to run the timing locked out like I do, but it will tell you if your motor wants more timing at launch, easily. then you can work from there dialing in the best timing curve.
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Old 10-07-2007, 05:18 PM
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I would not bother with a "2800" or "3000" stall. i would go for a 3500stall minimum as a upgrade that will make a difference for the $$$'s spent.
A good 3500stall is going to be like night and day.

Something like this ATI racing converters is good stuff.

Here is a converter guy who may be local to you. http://greatconverters.com/

What are your 60ft times now? et and MPH too.?
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Old 10-23-2007, 07:30 PM
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I could also simply ping. My car is set up a 14, if I give it 16 initial, it's too much...depends of your compression.
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