...of course, i know what you're thinking...
Hey Morris
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Lead Driver
Joined: Aug 2002
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From: Saskatoon SK Canada
Hey Morris
Here's the axle ratios for a couple of the trucks in your yard.
Blue 1978 F-150 - H4 = 3.25:1 limited slip
Green 1979 F-150 - 14 = 3.00:1
Red 1970 F-100 - 17 = 3.25:1
Blue 1969 F-100 - 17 = 3.25:1
I got a 9" carrier with 3.70:1 but needs a pinion seal, bearings and spider gears. It's from a 1969 F-100 300 I-6/3psd. I'll trade it for 12 pack of Coca-cola.
It would probably only cost $100 to fix it if you steal the spider gears from another carrier.
Blue 1978 F-150 - H4 = 3.25:1 limited slip
Green 1979 F-150 - 14 = 3.00:1
Red 1970 F-100 - 17 = 3.25:1
Blue 1969 F-100 - 17 = 3.25:1
I got a 9" carrier with 3.70:1 but needs a pinion seal, bearings and spider gears. It's from a 1969 F-100 300 I-6/3psd. I'll trade it for 12 pack of Coca-cola.
It would probably only cost $100 to fix it if you steal the spider gears from another carrier.
Last edited by 51dueller; Mar 25, 2007 at 09:36 AM.
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From: Saskatoon, Saskatchewan
Nathan, thanks for the info on the axle ratios. 
This is good news, I was hoping for 3.25 and the limited slip is a nice bonus.
The 3.70:1 might be a little much for hiway, any idea of the RPM at 100kmh?
This is good news, I was hoping for 3.25 and the limited slip is a nice bonus.
The 3.70:1 might be a little much for hiway, any idea of the RPM at 100kmh?
Thread Starter
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Lead Driver
Joined: Aug 2002
Posts: 6,682
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From: Saskatoon SK Canada
100 km/h
235/75/R15 tires 28" diameter
3.70:1 ratio
C-4 = 2800 rpm
AOD = 1850 rpm
3.25:1 ratio
C-4 = 2500 rpm
AOD = 1600 rpm
I've made a Excel spreadsheet a couple years ago with all the conversion and calculators.
235/75/R15 tires 28" diameter
3.70:1 ratio
C-4 = 2800 rpm
AOD = 1850 rpm
3.25:1 ratio
C-4 = 2500 rpm
AOD = 1600 rpm
I've made a Excel spreadsheet a couple years ago with all the conversion and calculators.
Last edited by 51dueller; Mar 25, 2007 at 01:08 PM.
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Post Fiend
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From: Yorkton Sask
i think the 3.70 would be a better choice, with an aod. better in the city, more jump off the line...
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From: Saskatoon, Saskatchewan
Originally Posted by 51dueller
I've made a Excel spreadsheet a couple years ago with all the conversion and calculators.
The 3.25 sound good till I get the AOD rebuilt, then the 3.50 or 3.73 would be ok.
Post Fiend
Joined: Apr 2006
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From: Saskatoon Saskatchewan
Blue 78 which one is that i know he haas a blue 77 i know he has a green 78 maybe im missing some out there during my scouting~
Last edited by Dustin1690; Mar 25, 2007 at 10:07 PM.
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From: Saskatoon, Saskatchewan
Dustin, I think Nathan means the 77.
I`ll check the 77 F150 axle code on it tomorrow to be sure.
The 3.25 is what I`m after for the 56 for now. Lots of 9'' Ford rear ends here to replace the 77 one if I do use it.
I`ll check the 77 F150 axle code on it tomorrow to be sure.
The 3.25 is what I`m after for the 56 for now. Lots of 9'' Ford rear ends here to replace the 77 one if I do use it.
