T 18
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Joined: Feb 2005
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Yeah my Dad bought the truck new in 78 and the motor beens swap from a 351M to a 390 which is in it now far as I know the tranny hasnt been changed I am pretty sure it cast iron or something because when I put a clutch in I seem to think the top was as beafy as the rest of the case but I geuss looks could be decieving becase it could be think alumimum
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Ford used a sprinkling of both T-18s and N-435s in both 2wd and 4wd trucks, 1/2 throuhg 1-ton, all through the '70s and well in to the 80's. I have plenty of both..there are no hard and fast rules..seems pretty random, even withing the same model and year of truck.
Another very easy way to tell them apart is simply to look at how the shifter is retained in the tranny top cover (meaning all you have to do is unscrew the floor boot and look)
The T-18 shifter retainer cup is on the outside of the tower and is threaded on. The NP-435 retainer cup engages pins on the inside of the tower..push and 1/8-turn to lock/unlock... (and is a hatefull thing to get both on or off).
Another very easy way to tell them apart is simply to look at how the shifter is retained in the tranny top cover (meaning all you have to do is unscrew the floor boot and look)
The T-18 shifter retainer cup is on the outside of the tower and is threaded on. The NP-435 retainer cup engages pins on the inside of the tower..push and 1/8-turn to lock/unlock... (and is a hatefull thing to get both on or off).
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From: Nebraska
Tell me about it last year mine popped off and i think it was due to not being put back on correctly needless to say my shifter came out at the wrong moment when i was trail running and was in 1st gear had to drive a couple miles back to my camp site in first.
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seems to be a tough transmission it been though alot of hot rodding thaks eveyone for the help
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From: NW Kans
im pretty sure my 79 f-350 4x4 has a t-18. 1st gear doesnt seem as low as the np435 in my 77 highboy. anybody know what the actual 1st gear ratios for these 2 trans were? also, could it possibly be a t-19 or what were these used in?
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Originally Posted by lasthighboy
im pretty sure my 79 f-350 4x4 has a t-18. 1st gear doesnt seem as low as the np435 in my 77 highboy. anybody know what the actual 1st gear ratios for these 2 trans were? also, could it possibly be a t-19 or what were these used in?
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Originally Posted by 75crewcab
The shift pattern for the t-18 trans reverse shifts foward or toward the dash. The np-435 reverse shifts back or toward the seat.