tire swap what rpm
we are running a s-10 350 sbc , turbo 350, with ford 9 inch with 4.86 gear.and hoosier 32.0 x14.5 x15. want to go to smaller and shorter hoosier 29.5 x 11.5 x15 right now at finish line we are at 6000 rpm's .any ball park idea what rmp might be now. thanks.
|
I'd say around 6400-6500rpm.....
|
4.86 32"tall tire @6000 RPM
should be @ 118 mph if the only thing that chages is RPM then these would be your #'s 4.86 29.5" tall tire at 118 mph should be just over 6550 RPM |
my math @ 118 mph would be a tick below 6500.so id split diffrence and say right on at 6500,good luck
|
speed
According to my spreadsheet, the RPM will be 6505 @ 117.83 mph.
But, the only sure way to know is ,DO IT. |
MPH X 336(WHICH IS THE CONSTANT) X REAR GEAR RATIO / TIRE DIA.
THIS FORMULA WILL WORK NO MATTER WHAT MPH YOU PUT IN.BUT THIS FORMULA IS WITH A TIGHT CONVERTER.A REAL LOOSE CONVERTER WILL OBVIOUSLY BE MORE RPM. |
Everytime I change tire size every inch is about 2-300rpm in the 1/8th.
|
All times are GMT -8. The time now is 07:35 AM. |