what gear to run

[bigray]

01 mullis hard tail.462 bbc.at 13.1 on gas,power glide trans.leaving on the trans break at 4200. it has 3.90 gears now and 36'' tall tires, going the 1/4 miles at 9.62 at 144 but only shifting at 6000rpm and going out the back at 6150..but we are planning on running mostley 1/8 mile.it ran 6.25 at 113 at the 1/8th.the motor came out of a roadster running 8.80s i seen it do it.so i just think i need a little more gear..or shorter tires..any idea's ????? just a side note ,,we only have ran the dragster 5 times so far.. so iam sure it will pick up a little from these numbers.as we tune on it some..but it think it should run more like 8.95s in the 1/4 to 5.50s in the 1/8th....????

[shawnp]

Tires are way too big for that car!!! We are running 34.5x17x16 with a 582 going 7.50's. Those are probably just a hair large for our car. Most guys are running 33.5x17x16 tires with these combos and smaller. You need to be no larger than 33.5 on the tire and I would go 4.10 or 4.30 gear.

[Tod74]

Those times seem more like a door car than a dragster........is it a really mild BB or what?

not being a but hole just asking....

[curtisreed]

Ray, those are way big tires and not enough gear. Our dragster has 16.5-33s Hoosiers w/4.30 gear runs 5.0s in the 1/8 with a 468 injected.

Curtis

[TS1955]

With that size tire, and 1/8th mile racing I would go with 4.30-4.56. JMO.

TS1955

[hammertime]

IMO if it was me the tires would go first then a gear change. Id bet your 60ft is just horrible as its lugging that motor the entire way.

33.5 tire and a 4:30 gear would be my choice. Hoosier 18700's 33.5x17x16 co6

there is several tenths sitting there.

[bigray]

i ooooo i hear ya on the tire size>>> its just what it came with..but i do have a set of 4.56 gears,and we will most likely only running 1/8th mile.