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13 speed OD gearbox

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1 year 6 months ago - 1 year 6 months ago #242052 by hayseed
Replied by hayseed on topic 13 speed OD gearbox


I have an idea i read somewhere once that the 6613 is an updated version of the 613, i think something to do with differently cut gears, but again happy to be corrected.

Brett.

I think they were a Finer cut gears & had 2 teeth in contact at all Times & were a Lot Quieter than the earlier Boxes..
The bigger Series Boxes they went from Straight cut teeth to helical Cut Teeth. But can't remember When!! Possibly with the 12 Series.??...maybe..??

It's been a while since I've been inside something that Small or Old... So I may have it arse about.. But happy to be Corrected..

"Be who you are and say what you feel...
Because those that matter...
don't mind...
And those that mind....
don't matter." -
Last edit: 1 year 6 months ago by hayseed.
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1 year 6 months ago #242053 by 180wannabe
Replied by 180wannabe on topic 13 speed OD gearbox
I reckon you are right 'seed, and those finer cut gears/2 tooth contact, upgraded their rating to 660 lbs/ft.
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1 year 6 months ago - 1 year 6 months ago #242054 by JOHN.K.
Replied by JOHN.K. on topic 13 speed OD gearbox
I see no point swapping from a 10 sp........unless youre working in a Chinese coal mine .........another point about the small boxes,is you cant swap the gears around to get a overdrive.......you be needing all six front gears and the shifter clutch ,which are /were sold only as a set.
Last edit: 1 year 6 months ago by JOHN.K..
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1 year 6 months ago - 1 year 6 months ago #242055 by 180wannabe
Replied by 180wannabe on topic 13 speed OD gearbox
Maurice, if it's the overdrive that you are particularly after, an RTO-609 will give you a faster overdrive than an RTO-610 or RTO-613, 0.74:1 compared with 0.80:1.

Brett.
Last edit: 1 year 6 months ago by 180wannabe. Reason: spelling correction

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1 year 6 months ago #242057 by KelOz
Replied by KelOz on topic 13 speed OD gearbox
As John K says if working in a chinese coal mine cant beat 18 to 1 in low as against 12 to 1 in a ten speed (from memory) and it is a v8 petrol As the old saying goes better to have em not need em, than to need em and not have em

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1 year 6 months ago #242073 by Bimbadeen
Replied by Bimbadeen on topic 13 speed OD gearbox
Thanks Brett

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1 year 6 months ago #242100 by JOHN.K.
Replied by JOHN.K. on topic 13 speed OD gearbox
if you are really keen on overdrives ,you can get the 913/9513 series with a double overdrive........the splitter is an overdrive,and add a overdrive in the main box,which is quite possible by just swapping the gears around ,then you may have a 50% OD...........the Mack quad boxes had double overdrive ,so why not.
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1 year 6 months ago #242119 by Blackduck59
Replied by Blackduck59 on topic 13 speed OD gearbox
The overdrive kit for the 610 is only a couple gears, the rest are repostioned. I have both and RT and RTO610. Got lucky with the RTO as it had a new kit in it, paid 500 and the kit was double that cost at that time.
Bit of info,
www.4btswaps.com/threads/fuller-trannys-...68/page-2#post-51947
Steve
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1 year 6 months ago #242124 by JOHN.K.
Replied by JOHN.K. on topic 13 speed OD gearbox
The small box parts were always very expensive.......9 and 12 series stuff was cheap as dirt.

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