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Just bought a 58' f100 223 with 3 speed borg has clifford intake and headers along with a holly 4 barrel ill post pics as soon as i figure that out. Trans first gear is clunky not sure if i should rebuilt it or upgrade? Any advice
Congrats on your '58. We had a '58 F600 on the farm, and I have always liked the look of those.
Your trans is non-synchro in first gear, and thus it will grind, even at a standstill. You will not be able to easily downshift it into first either, although with enough practice and rev matching, it can be done.
Try shifting it into 3rd, then 2nd then 1st when at a stop, or at least 3rd then first. This will stop all motion inside the trans. (the input shaft spins due to friction from the pilot bushing and sometimes a little clutch drag)
I'd say try 2nd, but remember, the 2nd gear synchro leads a tough life, so best try not to use it just to "still" the trans to make first easier to engage.
There was a light and heavy in the F250, so you might look for the T89 also.
The Ford "303" top loading 3 speed came out in '63.
It may have had both patterns in the first few years of production. Not sure on that. When you are trans shopping, the difference in patterns will be clearly visible. There is a comparison here, with a trans that has both patterns:
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