Discuss 1987 Mustang 4.10: Gears Or 3.73: on AllFordMustangs.com, the place for Mustang enthusiasts.
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I have a 87 5.0 high output. It is mainly stock A few mods done. I want to change gears, but i still want to be able to drive it on the highway at 65-75 mph... I have a (AOD) TRANNY. What should i use?
Last edited by MADDMIKE; 08-23-2007 at 01:08 AM.
Reason: miss spelling
Do you have a commute? Do you care about gas mileage? Is your exhaust very loud? If you drive alot of highway miles i would suggest the 3.73's, even if you dont if you're planning on upping the horsepower the 4.10's might be a bit short for you're liking, especialy for the highway. Either way, my vote goes for the 3.73's. Crusing on the highway with 4.10's = high RPM's = increased engine wear = bad all around.
2002 Mustang GT - Black, Red Stripes
Mods: CAI, UD Pullies, Hood scoop into heat extractor.
Dude I know you are new here so I'll say this as politely as possible.... DO A SEARCH. This question has debated to DEATH on here and if you do a search, you will likely find a couple of dozen threads about it. Basically, if your running a 5 speed manual, everyone recommends 3.73's, if your automatic, 4.10's. Do the search function as it will answer all of your questions about gears and some questions you didn't even know to ask about.
Resident manual transmission/driveline guru :hihi:
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I got 4.10s with the aod and heads cam and intake along with some other bolt ons they work well for me but here in western nebraska the speed limit is 65 on the highway no interstate for my daily commutes i run with a holeshot 2400stall converter about 2400rpm at 65-70 mph. The only thing that sucks is the speedo is about 10-12 to fast!