65coupe88hatch

Ok so when i installed my new t5 in my car and started driving it i noticed that my speedo was so badly off, i ignored it untill i ordered the gear set from cj pony parts. I took the gear off the cable and it had 16 teeth, and i wasnt sure which one to install so iinstalled the 20 tooth one. Now my speedo is within a resonable amount, but still off 5 to 10 mph, would putting the 21 tooth gear cover that ?? they gave me 5 different gears in that set, but i only used the 20 and it make it semi work. now atleast i have some idea of how fast im going.
but would using the 21 tooth gear either bring it to being accurate or darn near?

white93pony

what rear end gears do you have 3.73 needs 21 4.10 needs 23

65coupe88hatch

its stock.. isnt it an 8.8 with 3.73's

greenstreak9205

if its stock its prolly a 2.73 possibly a 3.08 i think[&:] its coded in your door tag

65coupe88hatch

...dont have a door tag, but....if it was one of those mentioned what would the speedo gear be how many teeth

nitrous_bob

5 speed or aod ?

aod's have a 8t drive and your '88 (if it's a t5) has a 7t drive

also you need to know what gears you do have......they can range from 2.73-3.27 depending if it's aod or t5, 3.27 was available on aod cars

anyways

go to http://www.ddperformance.com and click the link on spedo gear chart or whatever it's called

you'll need to do the "raise butt and count" method to see what you do have though and go accordingly.

nitrous_bob

i copied it, but it won't paste right......

for 2.73's a 7t needs a 16t and a 8t needs a 18t
for 3.08's it's 18t and 20t



[align=center]Type Trans 16T 17T 18T 19T 20T 21T[/align][align=center]Manual wine white yellow pink black red[/align][align=center]Automatic blue green gray tan orange purple[/align]

mjr46

there comes a point where if the driven gear replacement doesn't correct speed then you'll have to replace the drive gear on the end of the output shaft with the correct one that corresponds to the gears in the rear