70 series gear boxes

[greek_style]

whats better a 4 speed or a 5 speed for a 70series swb???

[Sadam_Husain]

they come as a 5 speed, if you stick a 4 speed in it'll be shorter and the driveshaft lengths will have to be altered and you'd have to find a late model 4 speed that has the gearbox mounts for the crossmember, I think the crossmember also has to get shifted for a 4 speed?

[greek_style]

yea i know they come 5 speed was just thinking if i changed it to 4 speed id get lower gearing witch would make it better threw the bogs and hill climbs so thats why i was asking what would be better

[SMOKEY]

Can you get a 4sp for a 70# . unless the early 4sp can be fitted. I am not sure if there is a ratio change between the 4sp and 5sp , If not 4th gear in both box's is direct drive and 5th gear is over driven called over drive,

SO I WOULD GO THE FIVE SPEED,

FITZY.

[greek_style]

sweet im bulding a club truck so i was just cing what the proz and cons were so i didnt stuff it up by changing things that dont need changing

[Sadam_Husain]

sweet im bulding a club truck so i was just cing what the proz and cons were so i didnt stuff it up by changing things that dont need changing

forget about lower gearing just go for more horsepower

[greek_style]

its got a 3f in it only done 120000kms on it so gonna use that moter till it dies then do the up grade to a v8 going to do it in parts lol bodys geting choped soon then the bar work then high way to hell here i come

[sig]

the h55f 5 speed gearbox is just the 4 speed h41(i think) with a 5th gear in another case between the gearbox and transfer.transfer ratios are the same .gearbox clusters differ between diesel and petrol boxs but i think the ratios are about the same still.hope this helps cheers sig

[greek_style]

thanks sig yea ever lil bit helps was up all night looking at the specs of the 70's trying to work out the bugs so far so good lol

[mudlva]

marks adapters site state that a early 4 speed had 4.92;1 then LC moved to 4.84;1 for most boxes and then moved to 4.08;1
the link is here

http://www.marks4wd.com/misc_info/trans ... andCruiser

so unless you have a modern gear box its not worth the hassle to get 0.08 change in ratio

good luck with the build

buy the way would you be interested in selling your window wiper motor and heater motor unit?? Im after the 12 volt units due to repowering my truck with SB chev and changing the electrics to 12 volt from 24v

cheers Rohan

[greek_style]

i could b keen ill let u know what where doing because im not sure how where doing the second radiator but ill def let u know

[mudlva]

cheers for that

[sig]

think you will find that the 4.08 box is the H155f out of an 80 series

[greek_style]

ok thats kewl so i should just keep it 5speed and not go out and buy a 4spd box?

[Bolo]

Keep it 5 speed and bloody drive the thing first aye

[greek_style]

now stunnl heres my prob the truck not at my house or id b down the park riping the felds up and ummm it has no seats member so that makes things a lil hard

[Sadam_Husain]

now stunnl heres my prob the truck not at my house or id b down the park riping the felds up

No you wouldnt


better get bolo to show you how to stick some pics up so we can see the new project

[greek_style]

i so would lol the felds are fun how do u think i lurnt how to drive lol yea i gotta do that to just trying to sort out wen we going to bundys to start on it poor truck gonna lose a lot of waight