954RR

iTrader: (1)

Now that I have your attention, why are these not being made? or are they.

I just installed heads and cam in my TA and was wondering what you m6 guys with 23x/23x duration cams run for a gear? Are 4.10's to much?

I had a TR 224 and switched out to a TSP 232/234 and trying to take of kinda sucks because of the lack of lowend power. Granted I am not tuned quite yet.

12secSS

iTrader: (30)

Gear ratios can't be made just because the ratio seems nice. It needs to be able to be machined. In order to get that 3.90 ratio, you would need a specifc number of ring and pinion tooth count. It could be that the ring or pinion gear size can not support a matching tooth count to properly mate.

ninobrn99

iTrader: (8)

im running 3.89's with my f13 (230/232 112) but i have a 9"

BrandonDrecksage

iTrader: (1)

it depends on what your gonna trap in the q/m. you want to go through the traps at peak power in 1:1..on a m6..that is 4th gear. I think with 4.10s and shifting at 6k..you'll end up around 115 or so...if you rev higher, then it'll be different

www.f-body.org/gears

pasbonsimon

iTrader: (12)

are we talking 10 bolt or 12 bolt? 3 series or 4?
I desperately wanted 3.90s in a 4 series in my 12 bolt but couldn't find them
Motive had a long backorder on 3.90s and I had to settle for 3.73s

Strokinit383

iTrader: (22)

My dad has 3.90s in his 8.5" 10 bolt in his 72 nova. So i know theyre made. I think richmond made them. Not sure why they arent made for the 7.5 though.