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Author Topic:   FINAL DRIVE QUESTION
chad01j
Member
posted February 15, 2003 10:40 PM
lets say i want to run a 6.00 final drive. would it be better to run a 2.00 in the tranny and a 3.00 in the rear or, would it be better to run 1-1 in the tranny and 6.00 in the rear?


modi25
Member
posted February 15, 2003 11:04 PM
i would run 6.00 in the rear and run trans in high gear, trans will last alot longer.
especially if it is t350


racer17j
Member
posted February 15, 2003 11:07 PM
if possible you should run in 1-1 gear thru the tranny


chad01j
Member
posted February 15, 2003 11:30 PM
why run 1.00 x 6.00 other than it being easier on the tranny? i read somwhere that there is less loss of power to the rear wheels if the two gear ratios are closer together. the reason i ask this question is... most guys at our track run 2.52 x3.08 = 7.76. the guy thats winning everything is running 1.82 x 4.22 = 7.68. this is a higher gear but he is much quicker off the bottom of the corner. i was wondering the gear selection could cause this? does mt question make sense??


ROXBURYRACING
Member
posted February 16, 2003 08:59 AM
FROM THE TRANSMISSION RATIOS THAT YOU LISTED, IT LOOKS TO ME LIKE MOST ARE RUNNING A TURBO 350 TRANS IN LOW AND THE ONE THAT IS FASTER IS RUNNING A POWERGLIDE IN LOW. IF THAT IS RIGHT, IT MAY BE THE FACT THAT THE POWERGLIDE HAS LESS ROTATING WEIGHT AND LESS DRAG THAN A TURBO 350, AND NOT JUST THE RATIO.


PEDDLER
Member
posted February 16, 2003 09:37 AM
From 30 years of dirt racing on a short dirt track with stock parts and pieces, any way you can get there is fine. The TH350 though is sluggish on restarts compared to a PG. The best bet is to go standard unless your rules don't allow. If thats the case a PG is the best choice.


racer17j
Member
posted February 16, 2003 06:26 PM
you guys are right think a big part has to do with him running a glide other part he might not be spinning the tires as much coming off


rico 08
Member
posted February 16, 2003 08:41 PM
if you run a total gear and run straight thru a standard and remove some gears to lighten the rotating mass then you have an advantage.


powerglides
Member
posted February 17, 2003 10:42 AM
hmmm, never had a problem with a stock driveshaft. ran as low as a 6.50 in high gear turning as much as 7800 rpm. must be because it was a ford with a ford driveshaft, lol... okay chevy guys, my head is on the chopping block!


powerglides
Member
posted February 18, 2003 10:39 AM
you need to run a final gear it takes rotating weight out plus you can run lightened gears there are to many ratios out there not to run a final gear if you can run a stick and light flywheel it will help slow you down for the corner and help you off the corner make sure that if you run a final gear that you run a good balanced drive shaft


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