mixing ring pinion brands
#1
mixing ring pinion brands
I know I would rather not do this but I cannot seem to find a brand that has both 4.30 front and rears. I have 04 F150 FX4 with stock gears and 35s. I am going to put 37s back on hense the 4.30 gears. I have 8.8 front diff and 9.75 rear.
#4
Wow, thanks for the quick replies. I am just trying to get my truck back to a stock ratio. The math tells me that 4.29-4.31 will get it where it needs to be. I don't offroad my truck (daily driver) so I don't need the extra torque of the lower 4.56 gears.
#5
yea but the stock tires don't weigh anywhere near the amount a 37 does, i bet a 37 on 20, if that's what you have, weighs double if not more than a stock rim/tire
4.30 to 4.56's are less than 100 rpm difference, you won't even know the difference in mpg on the highway
4.30 to 4.56's are less than 100 rpm difference, you won't even know the difference in mpg on the highway
Last edited by ATOM; 08-10-2009 at 08:33 PM.