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Old 05-26-2002, 01:33 PM
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Post Quick grears?

What is the best gear ratio for street use? I want to be quick off the start. Don't care about
milage or highway use. Engine is 350 with cam/carb/headers and 3-spd manual tranny. Rearend is 10 bolt. Not sure what is in it.

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Old 05-26-2002, 03:22 PM
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if you don't care about mileage, then put in some 4:11's. They'll give you lots of jump.

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Old 05-26-2002, 10:36 PM
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get some 5.57s!
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Old 05-28-2002, 03:36 AM
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Hi,
I use 3.70's in my '33 Ford street rod but if you want to really haul off the line go with 4.11's. Here's the way to find out what your yours is now. Jack up the righht rear wheel, leaving the left one on the ground. Mark the diveshaft at 12:00 o'clock, preferably at the rear yoke. Mark the top of the right tire at 12:00 o'clock. Count the number of full turns of the driveshaft while someone else turns one full turn of the wheel. Multiply the number of turns of the driveshaft by 2 and you have your rearend ratio.
John Brackett
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Old 05-28-2002, 03:38 AM
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I would use a 4.10 or a 4.11 still streetable and good holeshots.I wouldn't go any lower than that.And I would probably get a posi unit too.
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Old 05-28-2002, 05:21 AM
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A good street gear would be in the 3.25 to 3.55 ratio...Beware, the higher you go you may have to change from 3 to 4 speed transmission.
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Old 05-28-2002, 12:57 PM
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OK, You don't know what the gears are now. So how does it go now? Are they too low or too high? Gotta start some place. Do you have the size tires on it that will be staying on it?

[ May 28, 2002: Message edited by: rod1936 ]</p>
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Old 05-28-2002, 11:28 PM
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4.11 or 4.30 is good if you don't plan on going on the highway. You will end up doing 4000 rpms at 70 mph. 3.55 is good if you are going to do any highway driving. If you don't plan on any highway usage, then go for the 4.11 or 4.30s. This is all assuming you have no overdrive which it doesn't look like you will without a tranny swap.

[ May 29, 2002: Message edited by: blown69stang ]</p>
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Old 05-29-2002, 08:49 AM
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I'd go with the 3.55. Go higher and you'll be reving the engine everywhere you go, high rev,s = shorter engine life $$$$, Good luck, Joe
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Old 05-29-2002, 10:40 AM
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i'm with mustang maniac. who cares if youre going 50 on the highway as long as youre turning 6000 rpm-haha
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Old 05-29-2002, 12:32 PM
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I'll thinking of getting a higher gear for my 66 mustang. I have a T-5 tranny which comes with an over drive. I want the quickest possible acceleration without scraficing my highway milage to much. Also whats a good 9" ford rearend donor car for my 66 Ford mustang.
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Old 05-30-2002, 03:06 AM
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Thanks everyone for your ideas and info. I will check the current ratio and go from there. The 355 or 411 seems to be the way to go!! Ill let you know what i come up with.
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Old 06-01-2002, 04:18 PM
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NEC, with a T5 and overdrive, you could easily go as high as 4.30. You would only be doing 3000 at over 80mph. Most of the time I have a feeling you won't be going that fast around town. It will help with acceleration in overdrive too. No downshifting at 50mph to pass in a hurry. And I'm not sure what year to get the 9" out of. Mine came out of a '68 or something like that. It was a hell of a lot better than the like 7.5" or something like that that originally came with the car. Talk to a transmission and rearend guy about years, he might know. Chevydude, don't go with 4.11 cause you don't have an o/d. Stick with the 3.55 or less or else engine life will go down very quickly. I don't go over 65 on the street, thats the only reason I put 3.89 in the back of my car. I don't go on the highway cause it would kill the engine if I did a lot. If I do, I only go three or four miles cause I don't feeling like rebuilding in a few years. If you really want to go higher, drop in an o/d tranny or use a Gear Vendors.
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Old 06-01-2002, 04:28 PM
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You know 3:73 aren't bad gears to go with either...they will give you a pretty good jump off the line and will save on the Engine a little better than 4:11's.....Mike
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Old 06-01-2002, 11:27 PM
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Thanks everybody for info..I have yet to put it on stands and see what ratio is in it. Waiting for new clutch to arrive and then will do it. But at the moment I can drive around all day in town in 1st gear and can peg it at 120 in second. but no low end at the line. thats what I want. Really don't want to get into a 4-sp either. Ill keep you posted. Thanks again
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