stock advance curve
Thread Starter
Joined: Apr 2000
Posts: 1,536
Likes: 322
From: South Windsor, CT
Car: '89 GTA
Engine: ZZ6TPI
Transmission: T56
Axle/Gears: Borg Warner 3.70:1
stock advance curve
What does the timing advance curve look like on a stock L98. I know it starts at 6 degrees at idle, but what is full advance and at what RPM is it all in?
89 Transam GTA, a few bolt ons
89 Transam GTA, a few bolt ons
Supreme Member
Joined: Jul 1999
Posts: 5,183
Likes: 42
From: Oakdale, Ca
Car: 89 IrocZ
Engine: L98-ish
Transmission: 700R4
Probably want to ask on the PROM Board for the exact curve, but advance is governed by a few different inputs the ECM sees....but on flat ground, from a standing start, mine will get about 32* BTDC at about 2500 or so, IIRC, last time I looked was when i had my scanner plugged in, and just sorta glanced over at it.
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