what is it?

[dwight94]

ive got a 94 cobra, and through the 1/4 im running right at 6100 rpms in third crossing the line on 26x10x15 MT slicks...is this a 3.55 or what

 

[Javi]

you should have 3.08's, the only cars that i know that came with 3.55's from factory are, the Mach1's and 03-04 COBRAS.


check on the rear axle for a tag on the differential, if gears havent been changed.

 

[dwight94]

its been took apart before its got bbk control arms and a differne t diff cover

 

[blown98gt]

if you need to figure out your gears then its (rpm x tire height), divided by (336 x mph) as long as you are using 4th gear in the tranny.

 

[gt96stang]

jack up the rear of the car.... Mark the driveshaft and count the number of times it goes around per full revolution of the rear tires.

 

[ProKiller]

jack up the rear of the car.... Mark the driveshaft and count the number of times it goes around per full revolution of the rear tires.

exactly

 

[ram360]

jack up the rear of the car.... Mark the driveshaft and count the number of times it goes around per full revolution of the rear tires.

exactly

x3 works like a charm

 

[OnyxCobra]

It's probably 3.08s (maybe 3.27s but i'm not sure), with 3.55s you're into 4th a little before the finish.

 

[dwight94]

i hit 4th the final time about 10 ft from finish

 

[OnyxCobra]

i have 3.55s and i was hitting 4th quite a ways from the finish.

 

[dwight94]

what mph and times were you running i ran 13.59 at 98 mph

 

[OnyxCobra]

i ran 13.8 @ 99 with 3.55s, stock i ran 14.2 @ 99 crossing the 1/4 at the top of 3rd (3.08s)

 

[dwight94]

tire size

 

[OnyxCobra]

lol i've ran both 255/45-17 and 275/40-17, aka stock diameter.