AOD guys with 4:10 gears in here!!

The easiest thing to do would be to go with a taller set of tires. It will effectively give you a higher gear ratio but with out swapping the gears. Say going with a set of 28" ET Streets. And you can swap back to stock tires for street use.

As far as shifting into OD unless you have made some internal mods to the AOD I would recommend against it. The OD band is the weak link and under WOT it will burn up. Sometimes it will last for a while and with others it goes up in smoke quick. I know from experience. An AOD with no OD, 4.10s and 70 mph on the interstate is no fun.


I think that my set up in my 93 is similar to yours only I still have the stock converter. NA I run 14.0s@100 mph. With a 100 shot it goes 12.72@109 and it is out of gear. Given that I would think that your converter and gears are what is keeping you mph down.

Personally I would throw a set of 28" tall ET streets on some 15" rims and use them as track tires and run you 17" rims with a set of street tires.

Since my AOD has no OD I have one out of an 89 Mercury Grand Marquis that I am going to swap in. It will have an A++ OD servo, 3000 RPM Lentech non lock up converter, shift kit and we'll see how that runs. Then I plan on selling it so I can work on my 88 FHP coupe.

I have 410's too and Im not even "close" to the red line! R U using street tires? A taller tire will do it. I didnt see any major mods in your sig. Are you running the stock cam? Stock intake?

UnderdogGN said:

i guess the plan is to put some 28" tires on 15" wheels then..I would like to be able to run in street form though....but owell..

my car is far from stock it has h/c/i and im spraying a 100 shot.
GTOReturns-what size tires are you using?
im running 275/40/17 nitto drags which are listed at 26.1" tall but they are now bald

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Invest in a chip. Depending on what you have your probably making power up there. A chip will higher the rev limiter. Im running stock size tires. I was running 16 inch Nitto DR's, 26 inch tall.