lower my RPMs at 80kph
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lower my RPMs at 80kph
Just picked up an 1980 4wd Toyota .... i've got the 4 speed manual and i do alot of highway driving .... my rpms are way up at 3 grand when i'm runnin' 80 kph.
I dunno what that is in mph 50 ? sucks ..... i figure toss on some taller tires might do it .... but does anyone make a bolt on overdrive for this rig ? ..... any more ideas?
I dunno what that is in mph 50 ? sucks ..... i figure toss on some taller tires might do it .... but does anyone make a bolt on overdrive for this rig ? ..... any more ideas?
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Easiest fix is the tires like you mentioned. That 4 speed is notoriously weak but the 5 speed that replaced it is very good. I'd try to find a 5 speed before I considered putting in higher diff gears.
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Originally posted by Victor
Easiest fix is the tires like you mentioned. That 4 speed is notoriously weak but the 5 speed that replaced it is very good. I'd try to find a 5 speed before I considered putting in higher diff gears.
Easiest fix is the tires like you mentioned. That 4 speed is notoriously weak but the 5 speed that replaced it is very good. I'd try to find a 5 speed before I considered putting in higher diff gears.
to tell you the truth i heard the exact opposite about the 5 speed. Don't know if he's really a reliable source though.
but i do know the 5 speed is 4 inches longer ? ... is there an adapter for that ? .... or do i cut and paste?
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Damn your right. G series 5 speeds suck and W series are much better but those are for later trucks. You have an L series tranny which I have almost no info about. What axle ratio and tire size do you have?
I found this page but it doesn't list much info about tranny strength: http://www.4x4wire.com/toyota/faq/
Marlin's truck may be the best example of a first gen around so I'd ask him what is possible.
I found this page but it doesn't list much info about tranny strength: http://www.4x4wire.com/toyota/faq/
Marlin's truck may be the best example of a first gen around so I'd ask him what is possible.
Last edited by Victor; 09-30-2003 at 06:29 PM.
#6
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Originally posted by Victor
Easiest fix is the tires like you mentioned. That 4 speed is notoriously weak but the 5 speed that replaced it is very good. I'd try to find a 5 speed before I considered putting in higher diff gears.
Easiest fix is the tires like you mentioned. That 4 speed is notoriously weak but the 5 speed that replaced it is very good. I'd try to find a 5 speed before I considered putting in higher diff gears.
i'm thinking about putting in a w56 out of a 85+ truck and having my rear driveshaft shortened and front lengthened
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thanks
If the truck is still runnin stock gear ratios ... i should have 4:37s in my axles .... i'm pretty sure i'm running a 255/75R at the moment (i'd have to double check) ....
I am looking at buying a used set of 30 inch mickey tompsons ...
how much of a change in tire size would i have to go to lower my 4th gear RPMs 500 to 1000 rpms less?
If the truck is still runnin stock gear ratios ... i should have 4:37s in my axles .... i'm pretty sure i'm running a 255/75R at the moment (i'd have to double check) ....
I am looking at buying a used set of 30 inch mickey tompsons ...
how much of a change in tire size would i have to go to lower my 4th gear RPMs 500 to 1000 rpms less?
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#8
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probably quite big...and as gutless as these trucks are you'd probably best spend that money on a 5 speed tranny
right now on my 31.5" tires, i push about 3000 at 65mph
right now on my 31.5" tires, i push about 3000 at 65mph
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Originally posted by crazyhick
how much of a change in tire size would i have to go to lower my 4th gear RPMs 500 to 1000 rpms less?
how much of a change in tire size would i have to go to lower my 4th gear RPMs 500 to 1000 rpms less?
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So 4th gear in your 4 speed has no overdrive? I'd say you could do 33's if that's the case although that would probably make your truck slow as a slug.
I think a 265/75r15 is a 31 so you should consider at least 32 but then we have to start looking at clearance and lifting.
I think a 265/75r15 is a 31 so you should consider at least 32 but then we have to start looking at clearance and lifting.
Last edited by Victor; 10-01-2003 at 04:49 AM.
#12
Originally posted by Victor
...I think a 265/75r15 is a 31 so you should consider at least 32 but then we have to start looking at clearance and lifting.
...I think a 265/75r15 is a 31 so you should consider at least 32 but then we have to start looking at clearance and lifting.
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Originally posted by Victor
So 4th gear in your 4 speed has no overdrive? I'd say you could do 33's if that's the case although that would probably make your truck slow as a slug.
I think a 265/75r15 is a 31 so you should consider at least 32 but then we have to start looking at clearance and lifting.
So 4th gear in your 4 speed has no overdrive? I'd say you could do 33's if that's the case although that would probably make your truck slow as a slug.
I think a 265/75r15 is a 31 so you should consider at least 32 but then we have to start looking at clearance and lifting.
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Originally posted by kyle_22r
probably quite big...and as gutless as these trucks are you'd probably best spend that money on a 5 speed tranny
right now on my 31.5" tires, i push about 3000 at 65mph
probably quite big...and as gutless as these trucks are you'd probably best spend that money on a 5 speed tranny
right now on my 31.5" tires, i push about 3000 at 65mph
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