302f150

Hey guys, It's been a while. Im back in college, working two jobs, and my gf just moved 3 hours away for her college lol. But, I finally got the fox on the road, and I'm thinking, why in the hell am I turning 2k RPM at 60, I'm guessing i have some pretty low gear in the rear. It's a 92 hatch, t5, 265/50/15 tires, but I checked the speedo readiong against my dad's 03 pickup truck, and it was like, half a mph off at 60. So, if I do have gears, someone changed the speedo gear at least, anyways, do I have 3.73's? maybe even 4.10's? I know this is just an approximation, but I'm gonna have it up on a lift in two weeks to put subframe connectors on it, so I can check for sure then, just any ideas would be great, later

MikeVa

I'll throw a guess and say3.55's. I have 3.73's in mine and it runs 2000rpm at 55mph.

bighungrymatt

is there a link to see what rpms you run at what speed with certain gears?

Albizo66

i agree, my 373s are turning the same as you Mike..i'd say 355s

nothing too insane

MikeVa

Here is a link that works well:

http://www.allfordmustangs.com/Detailed/636.shtml

bighungrymatt

thanks thats exactly what I was looking for

302f150

ok, thats cool, i was thinking about 3.55's b4 i knew wut i had just because im prolly gonna mod it enough to not the the huge gear reduction. anyways, thanks a lot guys

ponyboy302

those are 410s when i had my 89 when it hit 5th gear it would drop the rpms to 2 grand at 60 mph normal driving ...speed limit in nyc is 55 so i knew if i was in fifth i was def breaking the law lol

94Blk5.0

My 3.55's turn about 1900 RPMs at 60,and the speedo is accuret. Thats with 245/45/17, so about 25.7 inch tires. The link for the gear calculator said I had 3.63's and for the OP's setup it calucated 3.78 or something like that. It looks likethe OP has 3.73's.

r429460

what size tires? that matters too. 3.73 my guess, thats with 255/50-17.