Low gear set 904, pro’s and Con’s

408 swinger said

Low gear set is 2.76, I believe. Std. is 2.54. Second ratio is 1.45. Maybe I have those two turnt around. I don't have personal experience with a low set.....yet. I do know, anything you can do to improve the 60ft. usually always equates to to better times on the big end. I think second gear will pull it good.

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There are over 100 different combos of straight cut different ratios in the straight
cut Pro Trans gears we utilize. 2.75 / 2.54/1.00 as I recall in factory 904 low helical gears. 2.45/1.45/1.00
in standard plantaries.
The straight cuts take less HP to turn but they are a $1,500. set last time I bought them. I still find
the factory Helical gears for 50$ or $75. They came in a lot of later model Mopars.

Pro Trans used to make a conversion to use the stock helical low gears into a 727 much cheaper and
that is what I use in our Street/Strip A bodys (10s thru Mufflers @ Sea Level)


You will see a 1/2 Dozen or more of my cars at Muscle Cars (Former Mopars) at the Strip next month and
I hope to meet a bunch of forum members at this race. This will probably (Not by Choice) be one of my last races!