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which msd box for 5.7 tpi ? 6a?

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Old 06-22-2006, 04:16 PM
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Car: 1989 IROC-Z
Engine: 346 LS6
Transmission: T56
Axle/Gears: Hybrid 8.8 3.73
which msd box for 5.7 tpi ? 6a?

hello

I was wondering which Msd box works best witha 350 tpi. Would it be a 6a?

Thanks

Speed
Old 06-22-2006, 04:23 PM
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Car: Hers: 88 Formula 350
Engine: TPI
Transmission: Auto
Axle/Gears: 10 bolt Posi
they all basically do the same thing, except one model or other models might have more bells and whistles to it

i haven't had problems with the 6a's
no rev limiter
but i dont care
valve float has stop rev limiting on me in the past

i also never had a mega powered machine, just you basic add ons and what not

the digital 6 is nice, but could be overkill
don't get caught up in the extra 300 rpms of multi-sparks it can produce, or the higher spark output
i didn't notice a difference, other then the starting retard, when i went from the 6 to the digi6
Old 06-22-2006, 04:34 PM
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Car: TWO 1992 CAMAROS 1 Z28 AND 1 B4C
Engine: 1 LQ9 AND 1 LS3
Transmission: 1 T-56 AND 1 6L90
Axle/Gears: 1 4.11 AND 1 3.31 (DANA 44)
GET A GOOD OLD 6AL
Old 06-22-2006, 04:44 PM
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Car: 1989 IROC-Z
Engine: 346 LS6
Transmission: T56
Axle/Gears: Hybrid 8.8 3.73
i dont need a rev limiter.... i have an auto
I think ill get a 6a

Thanks guys

Speed
Old 06-22-2006, 05:11 PM
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Car: 1987 Iroc Z28
Engine: The KING of the 3rd gen TPI's.
Transmission: Beefed up T5
Axle/Gears: Aussie 3.45's
6AL here. No problems.
Old 06-22-2006, 05:48 PM
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Originally Posted by speedmachine
i dont need a rev limiter.... i have an auto
I think ill get a 6a

Thanks guys

Speed

Autos break driveshafts, and u joints too. I would get the 6AL. A bit more money, but cheap insurance, IMO. Reguardless of what you buy, mount it in a cool place, or where it will get some airflow.
Old 06-23-2006, 04:47 AM
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Car: 90 IROC
Engine: 5.7L TPI
Transmission: 700R4
Axle/Gears: 9-bolt BW
if you're going with MSD-6-whatever, make sure you get the MSD wiring harness. it made hookup so much simpler. I was getting geared up to have to wire up power and everything, and the MSD wiring harness took care of that. so easy. my car's a '90. not sure if there's differences, check the MSD web-site.
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