67 rear differential gear ratio
#1
67 rear differential gear ratio
Im having problems finding out what diff I have... the tag says 2.70 .. im tierd of running 65 mph at 3000 rpm how and wich is the better gear ratio or and number I need to streach it out? thanks Mike
#3
RE: 67 rear differential gear ratio
You have 3.55 gears. You can swap in a AOD. The overdrive will do wonders for your gas mileage and still give you the launch off the line. Or you can just put in some higher gears...(numerically lower)
#4
RE: 67 rear differential gear ratio
3000 rpm's around 65-70 would be correct if your running a std trans or a automatic trans that would not be a overdrive trannie
if you have a 9 in a 247 is the highest i think they made factory and that would only slow your engine about 250 rpm's, the only thing to do if you want to cruz on the highway it to install a overdrive trans,
that ratio is the reason lots of the older cars were wore out when they hit the 75 k mark, the engines had just revved there selves to death ! overdrives add lots of miles to the engines over the long run
if you have a 9 in a 247 is the highest i think they made factory and that would only slow your engine about 250 rpm's, the only thing to do if you want to cruz on the highway it to install a overdrive trans,
that ratio is the reason lots of the older cars were wore out when they hit the 75 k mark, the engines had just revved there selves to death ! overdrives add lots of miles to the engines over the long run
Thread
Thread Starter
Forum
Replies
Last Post
Luke9222
4.6L General Discussion
19
10-22-2015 11:55 PM
musnicki
Classic Mustang General Discussion
8
09-23-2015 07:11 AM
MustangForums Editor
GT S197 General Discussion
1
09-03-2015 07:14 PM
tj@steeda
Steeda Autosports
0
09-01-2015 08:16 PM