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Old 10-04-2013, 08:10 PM   #1
 
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Question shift points for street and strip

I took Silverback to an unknown tuner a while back and he did not really know how to tune the Marauder's transmission. I'm left with an unwieldy tranny tune.

So my questions are: In part throttle operation, at what speed should the 1-2 shift be made, and the 2-3 shift and the O/D? At what speed should the torque converter lock up, 45 or 65 MPH?

In WOT opperation, Is 6K RPM for at the 1-2 shift OK? What RPM for the 2-3 shift? What about O/D in WOT operation, left off?

The car has 4:10's and a 3500 stall converter.

Any dyno tuning shops that you can recommend within a days journey from Shreveport, La. would be helpful. I know about Mo's.

Thanks for your help.

Pat







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Old 10-04-2013, 08:48 PM   #2
 
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Save your money with Mo's. His trans tune is lack luster at best. IMO Zack had the trans tune spot on

Trust me on this. I offered Jeff (Mo's main shop guy) a copy of Zack's trans shift schedule and he was too proud to use it
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Last edited by musclemerc; 10-05-2013 at 08:57 PM
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Old 10-05-2013, 07:58 PM   #3
 
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Musclemerc;

Your comments are noted but I would like to know, frome your experience, information to my questions in post 1.

Regards,
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Old 10-05-2013, 08:56 PM   #4
 
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To be honest Pat I would need a few days to reply. Here's why. I would need to load zacks tune then datalog the info so I can pass it along to you.

As far as dyno tuners go I would seriously consider JMS Chips in Lucedale, MS well within a days drive from LA
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Old 10-05-2013, 09:09 PM   #5
 
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No need to go through all that trouble. Thanks for the recommendation on a tuner. Worth a call or a visit at least.
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Old 10-06-2013, 09:02 PM   #6
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Quote:
Originally Posted by Silverback View Post
I took Silverback to an unknown tuner a while back and he did not really know how to tune the Marauder's transmission. I'm left with an unwieldy tranny tune.

So my questions are: In part throttle operation, at what speed should the 1-2 shift be made, and the 2-3 shift and the O/D? At what speed should the torque converter lock up, 45 or 65 MPH?

In WOT opperation, Is 6K RPM for at the 1-2 shift OK? What RPM for the 2-3 shift? What about O/D in WOT operation, left off?

The car has 4:10's and a 3500 stall converter.

Any dyno tuning shops that you can recommend within a days journey from Shreveport, La. would be helpful. I know about Mo's.

Thanks for your help.

Pat

i
Pat, Lidio did my trans tune & has the part-throttle shifts feeling 'normal' to Gina. My WOT 1-2 shift is at 6400 (with Crower cams). Same for 2-3. I always leave OD off at WOT. Power shifts are firm but not harsh, as with some prior tunes. Not a days drive, but could be a long weekend!
John
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Old 10-06-2013, 10:08 PM   #7
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Pat, I will look for your file when I have time and see what's up. When I drove the car it seemed fine.
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Old 10-07-2013, 09:09 AM   #8
 
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Pat, I will look for your file when I have time and see what's up. When I drove the car it seemed fine.
Thanks, Zack. That should help in undertstanding what my SOP is telling me.

Regards,

Pat

BTW, Silverback's mom sends her best.
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