Running 90% 1/8 mile everywhere I go. Any ET advantage to changing gear ratio? Door car 2250# with driver, 572 terminator on alky, 4.30 gears 33.5x16x15 3084S Mickeys, runs consistent 5.0, 1.10 60ft, 135 1/8 mile... anybody running 4;56 or even 4.88? Thanks!

You won't notice much going to 4.56's.....I would leave it alone personally.

the quicker you get to the 60 foot cone, the quicker you get to the finish line.

A deeper gear will get you off the line quicker and with those big tires you still shouldn't overpower the tires with the increased torque.

I run 4.86 gears in my car and run 1/4 mile.

Does anyone run a 6.50 rear gear? Thoughts? Opinions?

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If not going to 1/4 mile anytime then its maybe worth change for little ET. If going to ru n some 1/4 stuff(10%) and don't want any extra rpm then I would say a lot of trouble for little gain. That said the rpm gain over 4.30 in 1/4 would not be huge IMO. Go to wallace calculator and run numbers and see if you like answers.

I know on little brothers dragster we went from 4.30 to a 4.86 gear and got very little to nothing for it. Thats 5.20 hardtail dragster.

If you are bracket racing and its consistent ,why would you change it or thats the question I have always heard.

I picked up .04-.05 by going from 4.10 to 4.57. I am currently installing 4.86 and may put 5.00 gears in later. I shift at 7800 and would like to cross at 8100 or so. I'm 2350# going 4.90's.

But changing gears can affect the way a lot of other things work.

ET calculators said my car would run better with 4.56 gears. I swapped in some 4.57 and it was a slug. Converter stall was all wrong. Went back to 4.86 and the car loved them. If I put in the 4.57 and a different stall speed converter, the car might have run quicker.

With my current combination of parts, my shift light comes on just before I cross the finish line. To me, that's running as close to perfect with how I currently run the car. If I wanted a higher or lower shift point, then other changes would have to be made to make everything work together.

I have also considered going to 5.00 gears just to get my shift point a little higher.

I run 5:13's in mine...it weighs 2950...I used to run 32x14's out back but switched to Pro Bracket Radials recently...I go through the traps at 6500 rpm...

I find it easier to hit the tree for one thing...I tried 4:30's and they were awful for me...I still have them for sale if anyone is interested...4 passes on them...they fit a Dana 60...150 bucks plus the ride...