ferd 9" axles, ratios early 70s late 60s ?

[R72K5]

i need to find out what ratios were most common under early mid 70s like 74-79 or so big foerd cars like granada and LTD and grand marquis and such, and also 67-72 F-100 trucks and maybe 73-79 or so F150/150 trucks

i was always under impression 3.55 later 70s and 4.10 trucks earlier years

right ?


who knows ? who to ask ? where ?

last one i checked was 3.55 and from under a 2 door 76 grand marquis with 360 and auto trans we took to shredder

i think im gonna go with one of these axles since they are common and cheap and such, for the 84 c-10


so i can change ratios easily depending on if i need highway gear(3.55) or hauling gear(4.10)

if those really are the ratios that were put in those back then

thanks

 

[Bubba Ray Boudreaux]

The I got came out of an '82 F-150 and it had a 3.50 gearset.

 

[R72K5]

ok yep there it is,,, 3.50 yep

thats the one

ok, 3.50 was the common one it seems like, early mid 70s and older mainly


right ?

thanks

 

[diesel4me]

high ratios too

I saw a lot of high geared ones in many mid to late 70's and 80's cars,especially the big land yachts like lincolns and grand marquis,LTD's,etc--we went hunting for a 9 inch chuck for a 67 econoline pick up my brother had,we found several that were in the 2.56-3.23 range before finally finding a 3.50 ratio in one crown vic that looked like an unmarked police car..

I'm not positive,but I've heard a 9 inch ford axle from a 75-77 large ford or merc station wagon with leaf springs is the closest in width and spring spacing to put in a 73-87 GM truck,and the "5 on 5" bolt pattern on the wheels is the same as 2wd GM trucks..never done one myself,so this info might be wrong,just something I overheard at the boneyard one day...happy hunting....dont know why you dont put a 14 bolt FF under it--it practically bolts in!--maybe you dont want to carry 2 spares ??..