mallory

hello guys i needs some advice. im running a small block stroker motor and it is a strickly strip car. with a 5 speed tranny. i want to upgrade my gears in the rear end...i currently have 373 in her now. i was thinking about changing to 456....i want to be able to run the quater and have a solid strong gear. what do you guys recommend...thanks for any advice.

88stangaruu

depending on what your max rpms are in that car, a 4.56 might hurt your mph in the 1/4, not to mention you might have to go to 5th and most of the time you dont want to have to shift to 5th in a 5 speed, at least thats the way i look at it, you want something your going to cross the line in 4th at about 5,700-6,000rpm.

ikeybmg

stangaruu is right, I am fine with my 373 but if you wanna go up, id suggest no more than 410. Like he said, you want your rpm to be right near the redline in 4th when you go thru the trap.

chath_brick

yeah, you're gonna hate anything bigger than a 4.10

randy78045

I dont think id wanna change.... 3.73's work for me...

mallory

thanks for the input guys. how well will the car launch with the 373...im going to put a spool and rear control arms on the car. will the 373 be good out of the hole with all the horse power im pushing. thanks for all and any advice.

randy78045

how much rwhp you makin?

88stangaruu

My 3.73's and detroit locker basically pick me up and throw me out of the whole with my suspension set up. I love em.

mallory

im putting a little over 450 to the pavement...so do you thing 373 and a good rear suspension can sling me out of the hole..thanks again.

grabbem88

hey tell me about the holley....what's your numbers at what rpm..