68 Barracuda Manual Steering Box
Ratios, for those interested
My photo
left 20:1 Left hand drive
middle, greasy 20:1 Left hand drive
right 16:1 . it was left hand drive but i converted it to RHD by turning the nut round
additional photo supplied by RE(mopar action) with ratios on to make it clearer
24: 20 :16 all shown NOTE:all Left hand drive.
LHD parts have thin end of teeth to high side of thread
RHD parts have thin end of teeth to low side of thread
ballnut machining on the inside iis matched to thread machining
all use the same size ball bearings
any drift in tollerance on the machining of the two parts can lead to a little longitudinal sloppyness you can swap ballnuts and screws of the same ratio around to get best fit. but the factory workshop manauls suggest that this is BAD and you should not take a ballnut off a screw
part numbers are not universal a 20:1 right hand drive ballnutand screw has a different part number to a 20:1 left hand drive one , but they are the same parts assembled differently.
20:1 standard ratio everywhere except USA
24:1 standard in USA
20:1 performance in USA
16:1 a few dodge darts in USA
16:1 police and RT in australia BUT with a shorter worm screw to prevent fitment to cars with the standard steering column.
many trucks used 16:1 but the thread goes the otherway. used in a car you would have steering that goes left when the wheel turns right.... never a good thing.
Sector shafts you have no such problem all work with all. in an in-Era manual box for A body. 60s/70s 2xxxxxxxxx part number and 80s-94 3xxxxxxxxx part number.
Ratios, for those interested
My photo
left 20:1 Left hand drive
middle, greasy 20:1 Left hand drive
right 16:1 . it was left hand drive but i converted it to RHD by turning the nut round
additional photo supplied by RE(mopar action) with ratios on to make it clearer
24: 20 :16 all shown NOTE:all Left hand drive.
LHD parts have thin end of teeth to high side of thread
RHD parts have thin end of teeth to low side of thread
ballnut machining on the inside iis matched to thread machining
all use the same size ball bearings
any drift in tollerance on the machining of the two parts can lead to a little longitudinal sloppyness you can swap ballnuts and screws of the same ratio around to get best fit. but the factory workshop manauls suggest that this is BAD and you should not take a ballnut off a screw
part numbers are not universal a 20:1 right hand drive ballnutand screw has a different part number to a 20:1 left hand drive one , but they are the same parts assembled differently.
20:1 standard ratio everywhere except USA
24:1 standard in USA
20:1 performance in USA
16:1 a few dodge darts in USA
16:1 police and RT in australia BUT with a shorter worm screw to prevent fitment to cars with the standard steering column.
many trucks used 16:1 but the thread goes the otherway. used in a car you would have steering that goes left when the wheel turns right.... never a good thing.
Sector shafts you have no such problem all work with all. in an in-Era manual box for A body. 60s/70s 2xxxxxxxxx part number and 80s-94 3xxxxxxxxx part number.