Which Gear Ratio?

eleanor_350 · 05-14-2003, 12:04 PM

I'm getting ready to swap my 8 inch rear with 2.80 gears in my 65 coupe for a 9 inch. I have two sets of 9 inch gears to choose from, 3.25 and 3.50. I know the 3.50's will give me the best low end but I'm afraid 3000 rpm's @ 60 mph will get old after a while. Which would you recommend? The car has a 351w and toploader and it will smoke one tire

easily even with 2.80 gears. So even if I only go down to 3.25 instead of 3.50 it should still be pretty quick.

hobgoblin351 · 05-14-2003, 01:26 PM

I'm running 3.89's so I know what you mean about the high rev's on the highway./ I'm looking to either get a tranny with overdrive. Probably a beefed up AOD. Or bump the gears down. I'm looking at the 3.50' myself you should be fine on the highway and still be quick out of the hole.

05-14-2003, 12:04 PM	#1
eleanor_350 Registered Member Join Date: May 2003 Location: KY Posts: 5	Which Gear Ratio? I'm getting ready to swap my 8 inch rear with 2.80 gears in my 65 coupe for a 9 inch. I have two sets of 9 inch gears to choose from, 3.25 and 3.50. I know the 3.50's will give me the best low end but I'm afraid 3000 rpm's @ 60 mph will get old after a while. Which would you recommend? The car has a 351w and toploader and it will smoke one tire easily even with 2.80 gears. So even if I only go down to 3.25 instead of 3.50 it should still be pretty quick.

05-14-2003, 01:26 PM	#2
hobgoblin351 Registered Member Join Date: Sep 2002 Location: NYC Posts: 245	I'm running 3.89's so I know what you mean about the high rev's on the highway./ I'm looking to either get a tranny with overdrive. Probably a beefed up AOD. Or bump the gears down. I'm looking at the 3.50' myself you should be fine on the highway and still be quick out of the hole. __________________ 1970 Stang Conv: en:Boss351 (balanced/blueprinted) mech cam(240*@.050/.540 lift) Scrw in studs/comp cams rllr rkr Mldn valves 2.19in 1.71ex ported polished cc'd hrdnd ex Keith Black FT pistons(10.25/1) Weiand Excellorator manifold Holley700 DP mech 2nds MSD 6 box and Dis Headers/2 1/2 inch duels tr: modified FMX re:9-inch/3.89 limited slip

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