How do I adjust the ignition timing on a stock L69 with stock HEI?
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Joined: May 2012
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From: Woodstock, IL
Car: 1984 Trans Am Recaro Edition
Engine: 355 L98 Vortec 226/234 custom cam
Transmission: TKO-600
Axle/Gears: On borrowed time...
How do I adjust the ignition timing on a stock L69 with stock HEI?
I can't seem to find the procedure for this. There is one posted in the "technical" section but it has to do with FI engines.
Chuck
Chuck
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From: Chasing Electrons
Car: check
Engine: check
Transmission: check
Re: How do I adjust the ignition timing on a stock L69 with stock HEI?
Exiting the distributor is a 4-wire cable with a connector on it. Disconnect it to prevent the ECM from adjusting the timing. This will set code 42, that is normal.
Can now set the base timing by rotating the distributor and using a timing light. It can be tough to get the the hold down bolt, it is a 9/16" hex head on the bolt.
Be sure to adjust the timing on a warmed up engine, and recheck once the bolt is snugged down.
RBob.
Can now set the base timing by rotating the distributor and using a timing light. It can be tough to get the the hold down bolt, it is a 9/16" hex head on the bolt.
Be sure to adjust the timing on a warmed up engine, and recheck once the bolt is snugged down.
RBob.
Thread Starter
Senior Member
Joined: May 2012
Posts: 582
Likes: 1
From: Woodstock, IL
Car: 1984 Trans Am Recaro Edition
Engine: 355 L98 Vortec 226/234 custom cam
Transmission: TKO-600
Axle/Gears: On borrowed time...
Re: How do I adjust the ignition timing on a stock L69 with stock HEI?
Thanks RBob!
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