Technical > Dan Dishon's Transmission Den

sprag or spragless?

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spitzerscott:
 Here it is , I'm looking at converters.  We have a 1500# R.E.D.  336 c.i. chevy, we are going to leave the line at 5000-5500, we have a 4:10 gear, so let's hear it.  Sprag or Spragless. We do drive the car to the lanes and back to the pits.  Let me have it!!!!

jeff/21:
how big are your tires ? your running 366" and only 4:10 gears? as for the converter talk to your guy I have only run sprag type with small motors.

BK:
I would think sprag. Your going to need all the torque multiplication you can get.

gregm784:
I've run 331 - 387" blown motors.  4.10 gear, 32" tire, 1910# car.   Every converter guy i know says i don't need a spragless.  I took the sprag out years ago, saw no change in performance.  It repeats very well without it. 

we run a 7.60 index btw.

JrFuel Hayden:
Yes, our coverter people have said don't run spragless. We run 7.0's @ 188-190 mph with injected alky 400 ci SBC, weighing 1435 lbs
Greg I did not know you are at 1910 lbs, and don't you run the 12" NTF tires, are they only 32" tall ?
Hope to see you at CHRR.

Jon

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