I was running a 5spd 3.55's & 33's this year running 3rd low. Wasn't enough to be competitive this year. Planning to swap a 6spd in and run 4th low next year if I can ever sell my 5spd. If I can't sell it before next year I'll just have to put 4.88's in.
Too high with 3.55's. Tried it once this year with my 33" hankook mt's rpms came down so quick when I started off the clutch I had to dump it just about to keep on top of my S400.
Final drives
3.55 2nd Hi = 10.76
4.10 2nd Hi = 12.46
4.88 4th low 5spd =13.22
3.55 4th low 6spd = 13.36
I can swap trannys myself can't do gears myself.
Matt Williams runs 2nd Hi with 3.55's & nv4500. His truck has a S475 charger & he has no troubles keeping it lit.
Which Matt Williams are you referring to?