timing question
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Member
Joined: Apr 2001
Posts: 135
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From: Macedoni, Ohio, USA
Car: 1991 trans am
Engine: 383
Transmission: T-56
Axle/Gears: 3.23
timing question
Okay just did a motor swap and started the engine timing by ear. It sounds smooth and has a good idle, but when I unplug the EST connector, the engine dies and won't run with it disconected. I did get a new chip and wonder if this is the problem. Is there another way I can set the timing. At idle ~1000 rpm with the connector connected, the gun read ~8* or so advanced. Suggestions appreciated.
Thanks,
Jim
1991 Pontiac Trans Am
383 TPI
Thanks,
Jim
1991 Pontiac Trans Am
383 TPI
TGO Supporter
Joined: Jul 2003
Posts: 4,803
Likes: 2
From: Grand Rapids, MI
Car: Z28
Engine: Sb2.2 406
Transmission: Jerico 4 speed
Axle/Gears: Ford 9" 3.60
You have to unplug the EST before you set the base timing.
Off the shelf chips aren't exactly smiled upon around here...
Off the shelf chips aren't exactly smiled upon around here...
Supreme Member
Joined: Jan 2003
Posts: 2,133
Likes: 4
From: Houston, Texas
Car: 88' IROCZ
Engine: 388 TPI Motown 350 Race block
Transmission: 700R4
Axle/Gears: 2.77
Well, I'm no good at setting the timing by ear, but I don't have any trouble starting my 388 with the STC disconnected and the #1 at it's DTC compression stroke and setting it with a timing light to 8°.
I set the base timing in the ECM first then the engine, run it for while and see what it likes, 8° seems to be the magic number for my engine.
I set the base timing in the ECM first then the engine, run it for while and see what it likes, 8° seems to be the magic number for my engine.
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