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  #1  
Old 09-06-2010, 05:41 PM
TBarr TBarr is offline
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Default 6spd conversion?

any body ever done a 6 speed conversion on a 4.0L? I do alot of freeway driving in northern ID and Montana with a 75mph speed limit so i'm going 80 most the time and would like to be crusing at a lower rpm than it does now. any info is helpfull
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2004 Step-side xlt4x4 4.0L 5-speed
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37-14.5-15 Toyo M/T, 3 inch body liftProjected HID's, smoked tails, LED '06 corners, LED tails, LED back up lights
Intake, Chip, Straight Piped
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  #2  
Old 09-06-2010, 05:45 PM
STL STL is offline
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Default Re: 6spd conversion?

Seems easier to swap the axle gears

What do you have now? http://www.fordrangerforum.com/drive...xle-codes.html <==CLICK
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  #3  
Old 09-06-2010, 07:00 PM
TBarr TBarr is offline
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Default Re: 6spd conversion?

i have 4.10 gears
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2004 Step-side xlt4x4 4.0L 5-speed
Build Thread
37-14.5-15 Toyo M/T, 3 inch body liftProjected HID's, smoked tails, LED '06 corners, LED tails, LED back up lights
Intake, Chip, Straight Piped
Black interior with silver accents, LED Gauges, '04 Fx4 buckets, '99 expo full length console, Hurst Shifter
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  #4  
Old 09-06-2010, 07:22 PM
richarddhoward richarddhoward is offline
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Default Re: 6spd conversion?

It would help if you had 3.73s like I do, I got 19-21 in the hills there with the cruise set, lived in Montana 2 years and used to go visit the ex in Spokompton all the time. Or you can do this...drive slower lol A six speed can be done but I don't know of anyone that makes em for our trucks, and its STUPID expensive
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97 Ranger - 4.0 V6 auto, 4wd, 31x10.5x15s Wild Country XTX Sport All Terrains, Warn locking hubs, Pioneer deck with iPod attachment, Snugtop Topper, K&N filter, scan gauge II, Hella 500 Lights, More parts coming, waiting for the paycheck to get bigger!

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  #5  
Old 09-06-2010, 07:36 PM
Fx4wannabe01 Fx4wannabe01 is offline
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Default Re: 6spd conversion?

Larger tires would not only add a beefier look to the truck, but it'll also lower your effective gear ratio(numerically higher). Overall cost is a hell of alot cheaper than gear swapping your 4x4. If you add larger tires, it will lower RPM at freeway speeds(better econ) and will make more work for the engine driving in-tow(lower econ).

Pop on some 265/75R16's when you need tires or I got my best mileage numbers with 32x11.50R15's.



Something I will say as well...these SOHC's LOOOOOVE RPM's! I regularly see 19-20 freeway mpg's and that's running in 5th at 75-80 mph pulling 3100-3300 rpm's. And remember, going over 65, it's like pushing a brick through the air. And that's for any truck. Econ's gonna go down. Doing the things I suggested, may net you MAYBE 1-2 mpg. Is it even worth the effort?
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Old 09-06-2010, 07:39 PM
richarddhoward richarddhoward is offline
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Default Re: 6spd conversion?

Quote:
Originally Posted by Fx4wannabe01 View Post
Larger tires would not only add a neater look to the truck, but it'll also lower your effective gear ratio. Overall cost is a hell of alot cheaper than gear swapping your 4x4. If you add larger tires, it will lower RPM at freeway speeds(better econ) and will make more work for the engine driving in-tow(lower econ).

Pop on some 265/75R16's or I got my best mileage numbers with 32x11.50R15's.



Something I will say as well...these SOHC's LOOOOOVE RPM's! I regularly see 19-20 freeway mpg's and that's running in 5th at 75-80 mph pulling 3100 rpm's. And remember, going over 65, it's like pushing a brick through the air. And that's for any truck. Econ's gonna go down.
Yup, I saw my best mileage (cuz I've never had 32s) on 265/75s but that was on a 15 inch rim, I have the older smaller wheels. I pulled 23 out of my older 4.0 running 65 mph following my buddy to Wyoming in the rolling hills of Eastern Montana
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97 Ranger - 4.0 V6 auto, 4wd, 31x10.5x15s Wild Country XTX Sport All Terrains, Warn locking hubs, Pioneer deck with iPod attachment, Snugtop Topper, K&N filter, scan gauge II, Hella 500 Lights, More parts coming, waiting for the paycheck to get bigger!

Truck built in loving memory of Norm Howard
Outcast Racing
PNW Crew!!!
Afterhours Clan!!
Quote:
Originally Posted by aaron_ariens View Post
I think Henry just shit himself
Quote:
Originally Posted by Radness View Post
Its kind of like that carnival game "Whack A Mole" but with guns! Haha
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  #7  
Old 09-06-2010, 10:46 PM
TBarr TBarr is offline
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Default Re: 6spd conversion?

bigger tires would be nice. i want to get some 33's but don't have the money right now and am starting college in 2 weeks and won't be able to get a job cus i am on the golf team and will have practice everyday
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2004 Step-side xlt4x4 4.0L 5-speed
Build Thread
37-14.5-15 Toyo M/T, 3 inch body liftProjected HID's, smoked tails, LED '06 corners, LED tails, LED back up lights
Intake, Chip, Straight Piped
Black interior with silver accents, LED Gauges, '04 Fx4 buckets, '99 expo full length console, Hurst Shifter
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  #8  
Old 09-10-2010, 06:58 AM
crowdpleazer crowdpleazer is offline
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Default Re: 6spd conversion?

ive heard of ricers putting differrent gear kits in their turd can cars. idk if they make any but it might help to add a little more speed to 5th gear. and that shouldnt change the speedometer (like tires or a different rear end) cuz the speedometer cable is in the output shaft of the tranny i believe.
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new project: dirt track modified racing at the local saturday night track.
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  #9  
Old 09-10-2010, 07:24 AM
01_ranger_4x4 01_ranger_4x4 is offline
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Default Re: 6spd conversion?

yo wont get better mileage from lower RPM's with the SOHC 4.0, as shane said they like RPM's and your mileage will go to hell if you get below the RPM range where that motor is most efficient. and to add, with my scanguage i see a 2 MPG drop going from cruising at 65-70 to 75-80 so if your really concerned about mileage drop back on your speed a little.
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Last edited by 01_ranger_4x4; 09-10-2010 at 07:26 AM.
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  #10  
Old 11-18-2010, 10:27 PM
TBarr TBarr is offline
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Default Re: 6spd conversion?

im not woried about the mileage im gettin. actually im very pleased with it. i was just worried about running it at higher rpm's for hours at a time. oh, and i ended up getting some 33's and it did help bring the rpm's down a bit but mainly just made my truck look 500 times better
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2004 Step-side xlt4x4 4.0L 5-speed
Build Thread
37-14.5-15 Toyo M/T, 3 inch body liftProjected HID's, smoked tails, LED '06 corners, LED tails, LED back up lights
Intake, Chip, Straight Piped
Black interior with silver accents, LED Gauges, '04 Fx4 buckets, '99 expo full length console, Hurst Shifter
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  #11  
Old 11-20-2010, 07:26 AM
richarddhoward richarddhoward is offline
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Default Re: 6spd conversion?

Quote:
Originally Posted by TBarr View Post
im not woried about the mileage im gettin. actually im very pleased with it. i was just worried about running it at higher rpm's for hours at a time. oh, and i ended up getting some 33's and it did help bring the rpm's down a bit but mainly just made my truck look 500 times better
These engines, there is no worries about running them at a higher rpm range. The newer engines are built with good tolerances, and well there are millions of these engines on the road, they are still mostly running strong, there are always exceptions.
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97 Ranger - 4.0 V6 auto, 4wd, 31x10.5x15s Wild Country XTX Sport All Terrains, Warn locking hubs, Pioneer deck with iPod attachment, Snugtop Topper, K&N filter, scan gauge II, Hella 500 Lights, More parts coming, waiting for the paycheck to get bigger!

Truck built in loving memory of Norm Howard
Outcast Racing
PNW Crew!!!
Afterhours Clan!!
Quote:
Originally Posted by aaron_ariens View Post
I think Henry just shit himself
Quote:
Originally Posted by Radness View Post
Its kind of like that carnival game "Whack A Mole" but with guns! Haha
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  #12  
Old 11-20-2010, 09:33 AM
IndianScout IndianScout is offline
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Default Re: 6spd conversion?

my 31's sure helped with the highway cruizing I just have to remember the speedo difference at highway speeds..
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  #13  
Old 11-21-2010, 08:17 PM
crowdpleazer crowdpleazer is offline
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Default Re: 6spd conversion?

high rpms is of course harder on the engine but i wouldnt worry about it either. the 4.0 is a great engine. it should hold together as long as you keep up on all the regular maitenence.
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1998 ranger extended cab, 2wd, 4.0 ohv, 5 speed, sony xploid 52 4 way watt radio, 2 pair of pioneer 240 watt speakers, Cobra 29 LX LCD CB radio pushing 100 watts, k&n air filter, 15 inch exploder wheels, dual exhaust with 4 inch stainless tips, 2 12 inch subs with a 1000 watt amp just for the hell of it!

new project: dirt track modified racing at the local saturday night track.
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