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I had this center chunk gave to me and was told it came from a 67 or 69 mustang and was positive track 300 gear ratio which I have the ring gear but no pinion so will have to get new gears , but I know nothing about a ford rear end and was wondering how to tell if this will swap into a 79 f100 9 inch rear very easily or not , any input would be appreciated and if its really a posi trac or not and if the axels would need changed ? ?
I had this center chunk gave to me and was told it came from a 67 or 69 mustang and was positive track 300 gear ratio which I have the ring gear but no pinion so will have to get new gears , but I know nothing about a ford rear end and was wondering how to tell if this will swap into a 79 f100 9 inch rear very easily or not , any input would be appreciated and if its really a posi trac or not and if the axels would need changed ? ?
Ring gear: C2AW-4210-D // Without the number of the pinion gear, C2AW-4210-D could apply to either 3.00-1 or 3.50-1
There is no way to know what this is from, because C2AW was used for myriad different 9's.
btw: No Ford has posi trac or positraction, because these are GM terms. Ford = Limited Slip - could be Equa Lock or Traction Lock.
The limited slip you have pictured could be 28 or 31 spline. It is traction lock and will undoubtedly need to be rebuilt. If you're into it, you can do it yourself. I did mine and it takes a fair amount of patience and detail, but it's well worth it. Setting up a new ring and pinion is also a time-consumer. It will fit your truck, but trucks almost always have 31 spline axles, though if it came from a 69 mustang(heavier and bigger engine) you might get lucky if it was a fastback.
The limited slip you have pictured could be 28 or 31 spline. It is traction lock and will undoubtedly need to be rebuilt. If you're into it, you can do it yourself. I did mine and it takes a fair amount of patience and detail, but it's well worth it. Setting up a new ring and pinion is also a time-consumer. It will fit your truck, but trucks almost always have 31 spline axles, though if it came from a 69 mustang(heavier and bigger engine) you might get lucky if it was a fastback.
Some 1968/79 F100's, 1975/79 F150's have 28 spline axle shafts, some have 31 spline axle shafts. 1980/86 F100/150 9's have 31 spline axle shafts.
The limited slip you have pictured could be 28 or 31 spline. It is traction lock and will undoubtedly need to be rebuilt. If you're into it, you can do it yourself. I did mine and it takes a fair amount of patience and detail, but it's well worth it. Setting up a new ring and pinion is also a time-consumer. It will fit your truck, but trucks almost always have 31 spline axles, though if it came from a 69 mustang(heavier and bigger engine) you might get lucky if it was a fastback.
Yeah I was thinking it would need rebuilt , I do need to check to see if its 28 or 31 , good thing is it did come from a fastback as thats all my buddy ever owned that gave it to me and most were big blocks so maybe I will get lucky,,but with my luck the truck will be 28 an this one out of a mustang will be a 31 ,,I do know from the numbers on rear end thats in the truck now , I believe was swapped out of a e100 van if I checked the numbers correctly,,seems I will be checking it out again real soon to find out
Some 1968/79 F100's, 1975/79 F150's have 28 spline axle shafts, some have 31 spline axle shafts. 1980/86 F100/150 9's have 31 spline axle shafts.
Some 1976/79 F100/150's have Dana 44 rear axles.
Hence the words, "almost always". I've read that some might be 28 spline, but have never found one personally. Never found a Dana 44 as a rear axle ever, myself, only Dana 60's.
Thanks for all the feed back from everyone , I did find out that the Ford = Limited Slip - Equa Lock or Traction Lock. that I have is a 28 spline so we will see what the one in the truck is .
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Ford = Limited Slip - could be Equa Lock or Traction Lock.
