Tires or Gears

SST159 · 11-01-2014, 11:00 AM

Looking for some racer input.
Running a SBC 401 stroked 3.750 with 6" rod, 4.88 rear, 1.80 glide, 14/31 rear tire rolls out 98-99". Motor Dyno shows peak HP at 7100 rpm. Shift on time SST trim 2830 lbs.Currently going through traps 8K. I would like to drop the trap RPM to around 7600-7700. I need new tires so I believe my options are go to a 14/32 tire rolls out 102", or change gear to 4.56. What would you suggest?

11-01-2014, 11:00 AM	#1
SST159 Member Join Date: Jul 2005 Posts: 315 Likes: 5 Liked 20 Times in 16 Posts	Tires or Gears Looking for some racer input. Running a SBC 401 stroked 3.750 with 6" rod, 4.88 rear, 1.80 glide, 14/31 rear tire rolls out 98-99". Motor Dyno shows peak HP at 7100 rpm. Shift on time SST trim 2830 lbs.Currently going through traps 8K. I would like to drop the trap RPM to around 7600-7700. I need new tires so I believe my options are go to a 14/32 tire rolls out 102", or change gear to 4.56. What would you suggest? __________________ Drew Wonderly SST 159