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ram71351 08-03-2010 09:43 AM

1/4 mile setup question
When racing in the 1/4 mile, which is better and why? Tow/Haul on or off? And since the truck seems to make the perfect shift automatically..... shifting vs. auto?

RamTech 08-03-2010 09:52 AM

I say tow/haul for the change in shift points but why not experiment with both at the track and post the ET differences?

ram71351 08-03-2010 10:00 AM

Thanks, will do as soon as I can.

txhemi 08-03-2010 10:07 AM

I took my truck to the 1/8 Friday and found the best combo was Tow/Haul and letting the truck shift automatically.

ram71351 08-03-2010 10:31 AM

Thanks txhemi

txhemi 08-03-2010 10:56 AM

My pleasure.

CHILLZ HEMI 08-03-2010 11:00 AM

so tow/haul is ok to use when racing the 1/4 mile? I always thought that the gear ratio is so much lower, that it would put more stress on the engine, and tranny...

txhemi 08-03-2010 11:16 AM

From the manual:
When operating in “TOW HAUL” mode, 5th gear (if equipped) is disabled and 2-3 and 3-4 shift patterns are modified. Shifts into Overdrive (4th gear) are allowed during steady cruise (for improved fuel economy) and automatic closed throttle downshifts to 3rd gear are performed (for improved braking) when driving conditions warrant. Pressing the “TOW HAUL O/D OFF” button a second time to select O/D OFF will disable 4th and 5th gear completely, which should eliminate any excessive transmission shifting.

chefred112 08-03-2010 06:49 PM

I did my best times with tow/haul AND manual shifting at 6300 rpms for each shift...

ram71351 08-03-2010 11:24 PM

thanks chefred112...... this is one awesome site !!!!

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