View Full Version : what speedo gear

09-29-2010, 09:28 AM
i am going to install 3.73 gears in my 89 xr7 5pd car....what speedo gear do i need?

09-29-2010, 09:32 AM
This will help, and I am sure you are going to get this a bunch but thats too much gear for a 5 speed.


09-29-2010, 09:34 AM
What size camper you towing?

09-29-2010, 10:13 AM
well for starters i got rid of the junk supercharged v6 and dropped a semi built 5.0 in it.its no longer a daily driver and more of a weekend warrior to play with at the track
i feel as if the 3.27 gears are holding it back from quicker than [email protected]
in the qtr
alot of guys have been saying 4.10s butt i think that wud really be too much
if the 3.73s turn out to be too much then i will try the 3.55s and go from there

09-29-2010, 11:07 AM
What gear and rpm are you trapping in? 60ft's?

09-29-2010, 12:57 PM
what 5-speed are you running? T-5 or M5R2?

09-29-2010, 02:04 PM
i wanna say somewhere around top of 3rd gear
best 60ft so far was a 1.95 before i broke the diff case
i have the stock 89 m5r2

09-29-2010, 04:26 PM
If you're trapping at the top of a gear now, switching to a shorter gear will mean youll most likely trap in the bottom of 4th. Shifting near the end of the traps, which is lame IMO. Of course you could way shorter and try to trap in the top of 4th. Gotta do some math.