Trying to decide between going with 4.10 gears or 4.30's. Car is a 99 Mustang with a T56 6 Speed and vortech supercharger. Curretly have 3.73's and am just wanting something a little deeper for when i go drag racing at the local track, which is a 1/8th mile. Car will be used mostly on the street but want to race it as much as possible next year. I will be running a set of either a 26" or 28" ET Street Tires on the rear. Just was wandering if anybody has much expierence with the 4.30 gears, see alot of people are running 4.10's.
4.10 or 4.30 Gears
- Thread starter brianwcooper
- Start date
There's a thread in Talk about 4.30's in a 2V.
Personally, I think 4.30's are too much gear for a DD street car. I enjoy the occasional highway race (IN MEXICO OF COURSE) and Im afraid that 4.30's would kill my top-end too much. Im getting some 4.10's next month.
Personally, I think 4.30's are too much gear for a DD street car. I enjoy the occasional highway race (IN MEXICO OF COURSE) and Im afraid that 4.30's would kill my top-end too much. Im getting some 4.10's next month.
98COBRA281
10 Year Member
4.30's are a ton of fun, but i would not put then if a car with a blower, it would be to much. im all motor with 310rwhp, 1st and 2nd just burn like a joke, and if i hit 3rd right it will fight for traction at first then hook, ever thought about going 3.90's
scupking
Active Member
trinity_gt
10 Year Member
I love my KB/3.73 set up but everyone is different. On the street, your centri might like a bit more gear than my twin screw...
If you're going to race the car, do some math to find the optimal gear. If you know your current trap speed you can choose a gear that puts you in the optimal gear and RPM window as you cross the traps. I wouldn't go by guesses and mere suggestions here if ETs are important to you.
If you're going to race the car, do some math to find the optimal gear. If you know your current trap speed you can choose a gear that puts you in the optimal gear and RPM window as you cross the traps. I wouldn't go by guesses and mere suggestions here if ETs are important to you.
'13_ImpactBlue_GT
Angry Little Elf
First, you need to decide the tire size. The tire size is a much bigger change than the jump from 4.10 to 4.30!
Then, decide what gear you want to end the 1/8th mile in and what your mph is then. I'm guessing you'll want to cross 1/8th traps at 6000rpm in 3rd. If you normally run 90mph in the 1/8th, then choose the gears that will put put you at 90mph in 3rd at 6000rpm. If you expect to go faster, chose the next lower gear so you don't run out of rpms.
People are shouting out gear ratios, but it is all just flying poo. You have to decide the tire size, and do the calculations!
Then, decide what gear you want to end the 1/8th mile in and what your mph is then. I'm guessing you'll want to cross 1/8th traps at 6000rpm in 3rd. If you normally run 90mph in the 1/8th, then choose the gears that will put put you at 90mph in 3rd at 6000rpm. If you expect to go faster, chose the next lower gear so you don't run out of rpms.
People are shouting out gear ratios, but it is all just flying poo. You have to decide the tire size, and do the calculations!
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