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spinning crankshaft reluctor causing erratic ignition timing?

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Old 03-26-2009, 09:41 PM
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Default High RPM/big horsepower guys inside...

One of the members of our local forum (pretty sure he's a member here too) put up a post ******* LS engines, talking about how he ditched his because it wouldn't go fast enough for him. His biggest complaint being that he couldn't keep the ignition timing accurate enough with the factory ckp/reluctor. His setup went 6.80s in the 1/8 with a Procharged 408. He had ended up with BS3 injection, 7AL ignition, etc. because he wasn't satisfied with his EFIlive setup on the stock ecu. Anyone else run into this problem when they get power enough to get down in that area? I know there is stuff out there that is a lot quicker than that still using factory electronics. What is the difference? He said he was having problems with the reluctor moving on the crank, etc. and I'd never heard anything about this kind of problem with an LS. I just want to know if this is a legit argument so i can make countermeasures when I do my LQ4.

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Old 03-26-2009, 10:13 PM
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i never heard of the reluctor wheel moving on the crank on any ls series motor.

what plans do you have for the lq4 ? i hope it is BOOST
Old 03-26-2009, 11:55 PM
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Originally Posted by elias_799
i never heard of the reluctor wheel moving on the crank on any ls series motor.

what plans do you have for the lq4 ? i hope it is BOOST
What I have now is a complete LQ4, L92 heads, and one 60-1 turbo, which I plan to pair. I want to put some forged guts in it and see what I can do with 18 or so PSI. Just hope I don't get as frustrated with it as he did.
Old 03-27-2009, 10:16 AM
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Bump. I want an answer from someone who runs 9s with the factory electronics.
Old 03-27-2009, 10:22 AM
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I know there are quite a few guys doing this over on corvetteforum.com. If you don't get enough responses here you may try over there in C5 Scan&Tune!



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