6 speed questions
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6 speed questions
im wondering if there are any 6 speeds that are 4 speeds with a granny gear and an overdrive availiable, or if any companies have customizable gear ratios for trannies
my dad and i are going to be making a tow/speed truck hybrid out of an f100, and i was wondering if the afformentioned transmision would bolt to a 460, and be highway driveable
my dad and i are going to be making a tow/speed truck hybrid out of an f100, and i was wondering if the afformentioned transmision would bolt to a 460, and be highway driveable
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Joined: Mar 2007
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From: Texas
I don't know about bolting to the 460, but the Ford 6 speeds are what I consider a 5 speed with a granny. The top gear is an overdrive so the super duty 6 speed would be your granny - 4 speed - overdrive that you're looking for.
I don't know what year your F100 is, but the 6 speed is a MUCH larger transmission than some of the old 3 speeds. Bolting up to the motor may be your smallest problem.
I don't know what year your F100 is, but the 6 speed is a MUCH larger transmission than some of the old 3 speeds. Bolting up to the motor may be your smallest problem.
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oh i wish i had the f100, but right now its in the planning stages... the problem im facing right now is finding a manual transmission with a good low ratio gear to get started, and an overdrive, that will fit, but handle the torque of a 460, which may or may not get supercharged, because im planning on using this truck as a hybrid tow/street/strip truck, or a street strip truck with the capabilities of towing a trailer
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Six speeds are going to be really pricey or won't fit your 460. See here, the 5 speed ZF was made for the 460, the 6 speed for the diesel.
http://www.motivegear.com/tech_info/...nny_guide.html
Of course, you could also use a NP 435 or T19 4 speed. None of these trans will do all you want. The ratio spread on the 4 speeds is wide, leaving massive gaps. Similar on the 5 speed, but still gaps and not too high an OD.
Consider one of these trans with a GearVendor OD. 8 or 10 speeds.
http://www.gearvendors.com/
I would guess that a NP435 and a Gearvendor unit would cost less than a proper 6 gear if one could be found.
Look far and wide.
http://www.richmondgear.com/01sixspeed.html
http://www.ddperformance.com/T-56%20Transmissions.htm
Truck transmissions are not going to shift worth a crap for strip use. Car transmissions are not going to have the low first gear you want.
Here is a calculator to feed ratios and tire sizes into during your search.
http://www.novak-adapt.com/knowledge/gearing.htm
http://www.motivegear.com/tech_info/...nny_guide.html
Of course, you could also use a NP 435 or T19 4 speed. None of these trans will do all you want. The ratio spread on the 4 speeds is wide, leaving massive gaps. Similar on the 5 speed, but still gaps and not too high an OD.
Consider one of these trans with a GearVendor OD. 8 or 10 speeds.
http://www.gearvendors.com/
I would guess that a NP435 and a Gearvendor unit would cost less than a proper 6 gear if one could be found.
Look far and wide.
http://www.richmondgear.com/01sixspeed.html
http://www.ddperformance.com/T-56%20Transmissions.htm
Truck transmissions are not going to shift worth a crap for strip use. Car transmissions are not going to have the low first gear you want.
Here is a calculator to feed ratios and tire sizes into during your search.
http://www.novak-adapt.com/knowledge/gearing.htm
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well, i guess if i have to make a compromise i will
what is the major importance of the granny gear? and do i really absolutely need it, seing as theres only 1 real hill on the way to my track, and i dont even have to stop on it, and one where i have 2 potential stops on the way back. will it be absolutely necisary?
on a side note, we plan on using to truck to tow an open trailer with a fox body dragster, so it wont be high weight, so the real question at this point is, are there any over drive car transmissions that can handle that much torque? it seems like all the tko's and t-56s only go up to 650, i dont have the truck or the engine at the moment, but i want to plan for a little more. also, will said transmission hold up to the weight of the truck plus the 4000 extra pounds of the trailer and car?
thanks for the help
what is the major importance of the granny gear? and do i really absolutely need it, seing as theres only 1 real hill on the way to my track, and i dont even have to stop on it, and one where i have 2 potential stops on the way back. will it be absolutely necisary?
on a side note, we plan on using to truck to tow an open trailer with a fox body dragster, so it wont be high weight, so the real question at this point is, are there any over drive car transmissions that can handle that much torque? it seems like all the tko's and t-56s only go up to 650, i dont have the truck or the engine at the moment, but i want to plan for a little more. also, will said transmission hold up to the weight of the truck plus the 4000 extra pounds of the trailer and car?
thanks for the help
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Automatic trans? E4OD with a Gearvendor and the right diff gear will tow lots and cruise at a low rev.
As for the granny first, it saves the clutch on takeoff with max load. Also good in slow traffic with the big load.
As for the granny first, it saves the clutch on takeoff with max load. Also good in slow traffic with the big load.
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about the auto trans, thats a no, im a really stubborn manual buff, in my opinion, it doesnt get any better.
about the granny first, again, and torque issues
a, i dont plan on towing more than about 4 grand in a car and trailer, would a t56 or a tko600 stand up to this, plus the weight of the truck
b i think im psyching myself out on the torque estimates, i think 600 is a good place to put it, once again,
under those circumstances, do i really need an underdrive?
sorry if im being stubborn, im not a quick learner.
about the granny first, again, and torque issues
a, i dont plan on towing more than about 4 grand in a car and trailer, would a t56 or a tko600 stand up to this, plus the weight of the truck
b i think im psyching myself out on the torque estimates, i think 600 is a good place to put it, once again,
under those circumstances, do i really need an underdrive?
sorry if im being stubborn, im not a quick learner.
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Super Moderator
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Look at the first gear ratios for those trans. Under 3:1.
You will need a multi-disc oil bath clutch.
You will need a multi-disc oil bath clutch.
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Senior User
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im also a DIE HARD manual guy even my minivan and go kart have manual trans so i feel your pain to find good strong manuals
you could use one fo those trans they should hold up but like said with the high 1st gear you would have to slip the clutch a bit to get going while towing but thats no big deal
check out this site for an upgraded tko 900
http://www.modularmustangracing.com/
also you could use the zf5 since it has the granny 1st and the overdrive 5th and is plenty strong i have one in my 95 f150 with a 351w that i tow with all the time and like it but it doesnt shift as smoothly as a tko or t56 although you could still race it no problem
you could use one fo those trans they should hold up but like said with the high 1st gear you would have to slip the clutch a bit to get going while towing but thats no big deal
check out this site for an upgraded tko 900
http://www.modularmustangracing.com/
also you could use the zf5 since it has the granny 1st and the overdrive 5th and is plenty strong i have one in my 95 f150 with a 351w that i tow with all the time and like it but it doesnt shift as smoothly as a tko or t56 although you could still race it no problem
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i didnt realize the tko 500/750 had alower 1st thats good it should be fine for towing i can start out in 2nd "fairly easily" with the zf while towing and it has a 2.94 2nd i only use the 5.72 creeper 1st when on a steep hill so with a 3.27 1st should be no problem also i have a 3.31 final so if you go 3.73 it should be even easier and you have that nice deep .68 overdrive i wish the zf had
also you should be able to get a mid shifter for that so i would work in a truck nicely good luck
also you should be able to get a mid shifter for that so i would work in a truck nicely good luck