My 91 Camaro RS is basically stock....The only thing I have done is a high folw cat. Is there any advantage if I advance the timing on my LO3? Just curious.....because I'm bored......
Thanks
Thanks
Junior Member
are LO3s really respond well to a 4* advance of the timing...this is what i have planned to do to my baby once the f**kin' rain stops outside. (its been raining for like two weeks here in chicago!!!)
Supreme Member
I would suggest you advance in 2 degree increments until you experience knock then retard a couple degrees. Run 93 octane too.
Quote:
Originally posted by joshwilson3
Are you in that picture below your name? If so, which one are you?
Just wondering.
nope I wish I was the one doing the biting though Originally posted by joshwilson3
Are you in that picture below your name? If so, which one are you?
Just wondering.

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90RS305
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how hard is it to advance the timing? I've never seen it done so I have no idea how to do it. Well, I have a general idea, I did learn about engine timing back when I was in high school.....but that was freshman year.....
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well seens my 89 camaro is old and has 135k miles on it my car timing is at 6 thats were it runs good now when i had it like at 10 and 12 advance man did it move it was crazy but it wastes more gas trust so stay regualr
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I'm not worried about gas, belive me, my last ride got 7mpg. All I want is this thing to haul butt...
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All you have to do is loosen the distributor slightly then turn it until you have avanced it as much as you would like. This is all with a timing light ofcourse. If you don't have one then don't even attempt it.
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Coupla things......
When setting the base timing don't forget to temporarily disconnect the "timing wire" to elimimate all ECM-supplied advance. It gives some additional advance even at idle. It's a one-wire straight-through weatherpack connector popping out of the wiring harness over on top of the heater box under the hood. Wire is tan with a black stripe. Then have at it with the distributor wrench and timing light.
You won't "hear" detonation if you over-advance the timing becuase your motor has a knock sensor which will just pull the timing back if it hears detonation. Unfortuately, it'll pull out a BOATLOAD of timing if you get into detonation- far outweighing the performance you got from advancing the timing in the first place. So the old trick of advancing 2* at a time until you hear detonation doesn't really work well on knock-sensor equipped engines.
I have found that many GM TBI motors like the timing set at 4-6* BTDC instead of the stock 0* setting.
When setting the base timing don't forget to temporarily disconnect the "timing wire" to elimimate all ECM-supplied advance. It gives some additional advance even at idle. It's a one-wire straight-through weatherpack connector popping out of the wiring harness over on top of the heater box under the hood. Wire is tan with a black stripe. Then have at it with the distributor wrench and timing light.
You won't "hear" detonation if you over-advance the timing becuase your motor has a knock sensor which will just pull the timing back if it hears detonation. Unfortuately, it'll pull out a BOATLOAD of timing if you get into detonation- far outweighing the performance you got from advancing the timing in the first place. So the old trick of advancing 2* at a time until you hear detonation doesn't really work well on knock-sensor equipped engines.
I have found that many GM TBI motors like the timing set at 4-6* BTDC instead of the stock 0* setting.
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yeah, it seems that the TBI cars really like the 4*- 6* range, i have a moates adaptor, and i use the adjustment for timing, i usualy keep at at 4* with cheap gas, and 6 with not so cheap gas, that is where the motor seems to be happy.
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When I was stock I was running 8 degrees advanced on 87 octane with no problems at all. I would stay at 6 unless you have a way to detect the knock(winALDL, Moates, etc...)
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Awesome, thanks, I do have a timing light (well, my buddy does) so I'll give that a try.....just need to get the @#$! thing working again....

