Going from a 255 to a 235 is shorter, but it is also less tire on the road for traction. You may not get off the line quicker just because you may loose traction.
You may be better off with a stickier 255.

Last edited by YO7_A66; 01/16/18 09:14 PM.
1970 YO7 A66 [Canadian Export] F8 Challenger
340 (Currently in shop for stroker assy.)