It won't be too bad... The AOD has what a .65 or so overdrive? I can't remember off the top of my head but my guess is you'll be around 2400 or so RPM at 65? I have 3.73's so don't sweat it.
http://www.ringpinion.com/Calculators/Calc_RPM.aspx
Fox body auto's could be had with 2.73's, 3.08's, or 3.27's, depending on how they were optioned.
If it's truly mostly a highway cruiser, I'd drop a set of 2.73 or 3.08's back in it and call it a day. The 4.10's are going to cost you 5-6mpg....no two ways about it. That adds up after a few 600-mile round trips. Gearing it back down to a more highway friendly gear means it's not going to be a stop-light terror, but it'll keep you happier at fuel stops and will make for better highway passing. Add a set of underdrive pulleys a good high flow mid pipe and give it a few degree's of timing and you'll knock out mid-20's with it all day long.
If it hasn't got one already, I'd also recommend a decent valve body kit to firm up the shifts and a good plate style external transmission cooler to help extend transmission life.
Fox body auto's could be had with 2.73's, 3.08's, or 3.27's, depending on how they were optioned.
I actually learn this rule of thumb from this site, back when im active 07-08 , that for automatic 4:10, for manual 3:73 , idk how peoples do now, but back then if you follow that, you can go wrong.
whats the consensus for making power forced induction? I am starting to wonder if you want a 2.72 or 3.08 to keep you in the gear longer making power. especially if you are turbo to give them more time in boost.
I actually learn this rule of thumb from this site, back when im active 07-08 , that for automatic 4:10, for manual 3:73 , idk how peoples do now, but back then if you follow that, you can go wrong.
I'm currently running 3.73's with my 5-speed 331 powered Coupe and an considering dropping down to a 3.31 rear end ratio to make it more street/highway friendly.
That's the consensus amongst the crowd that like to drive with their foot in the oil pan all the time. For those that simply like to "cruise", those gear sets are about 2-ratio's too high. I'm another one toying with the idea of backing down my rear gear ratio now. I'm currently running 3.73's with my 5-speed 331 powered Coupe and an considering dropping down to a 3.31 rear end ratio to make it more street/
That's the consensus amongst the crowd that like to drive with their foot in the oil pan all the time. For those that simply like to "cruise", those gear sets are about 2-ratio's too high. I'm another one toying with the idea of backing down my rear gear ratio now. I'm currently running 3.73's with my 5-speed 331 powered Coupe and an considering dropping down to a 3.31 rear end ratio to make it more street/highway friendly. We just hit $1.40/L here at the pumps....gonna take every advantage I can get.
It's not so much keeping you "in boost" any longer as it it about loading the engine harder. The harder you can load the engine with a turbo car, the more violent the power comes on.
friendly. We just hit $1.40/L here at the pumps....gonna take every advantage I can get.
It's not so much keeping you "in boost" any longer as it it about loading the engine harder. The harder you can load the engine with a turbo car, the more violent the power comes on.
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