gear change for larger track

[okdingy2]

on small 3/8 track car ran great, 205/60/13 tiresand 3.45 rear gear gave 7500 rpm and good power. Moved to new track its almost half mile. Changed rear gear to 3.08 to control rpm. Ran this weakend, 205/60/13 tires 3.08 rear gear and rpm toped out at 6900 rpm before the end of the straitaways. Finished in last place. Would appreciate and help getting the combination right.

[knight54]

on small 3/8 track car ran great, 205/60/13 tiresand 3.45 rear gear gave 7500 rpm and good power. Moved to new track its almost half mile. Changed rear gear to 3.08 to control rpm. Ran this weakend, 205/60/13 tires 3.08 rear gear and rpm toped out at 6900 rpm before the end of the straitaways. Finished in last place. Would appreciate and help getting the combination right.

Probably need to go with 3.27

[checkeredflag2006]

214 x 327 is 700 maybe try 234 x 308 is 720. depending on where you run on track high side or low side. The 720 might put you about 7800-7900

[drtlvr]

OR....get it hooked up better through the turns, keep more rpm coming off, you might be at 7500 with a good driving car.

[okdingy2]

found a 327 rearend, going to try it this weekend. Thanks for all th support.

[okdingy2]

327 rearend worked great, put rpm back to 7500. We borrowed some hoosier dirt tires, they helped the handling of the car.