Any auto machs with 4.10s
, but soon I will have myself a nice set of ARH, LT ofcourse 
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07-21-2009, 08:57 AM
#6
4th Gear Member
Join Date: Feb 2008
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unless you do A LOT of highway driving or have a lead foot I would say go with 4.10s. I got 4.10s and I drive over 50 miles per day to and from work (all highway) and I barely notice any difference in MPGs unless I get on it, Kinda wished I had gone with 4.30s.
07-21-2009, 10:13 AM
#8
2nd Gear Member
Join Date: Sep 2006
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Posts: 267
I have had 4:10's in my auto Mach for a few years now, If I had to do it all over again I would, the Mach is my DD and I have used it on sereral long distance trips.
To be honest I didn't really notice a big difference in mpg but there was definitely a great difference in performance, on long trips in OD I would say the RPM's usually hang around 2800.
To be honest I didn't really notice a big difference in mpg but there was definitely a great difference in performance, on long trips in OD I would say the RPM's usually hang around 2800.
07-21-2009, 09:39 PM
#10
4th Gear Member
Join Date: Dec 2007
Location: Maryland
Posts: 1,503
2800.....ouch. I'd change the oil more often. I do it every 3 mos. with my 5 spd. My SLP LM1 catback my is singing a helluva note doing 2300 rpm @ 70 mph, with your higher rpm your exhaust is definately going to be talkin to ya with your o/r set-up. Ofcourse, that can be a good thing. Hwy MPG drop w/ a 5 spd. is no more than 3, can't see an auto suffering more than 3 or 4. Give em hell dude!