driveshaft interchange

[69heavychevy]

I have an 80 short bed with an I6 and 3 on the tree. Wanted to know if I can still use the same driveshaft behind a TH350 with a long tail shaft? Wanting to swap a 350/350 combo I have ready to go.
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[69heavychevy]

bump

[geezer#99]

Do you own a tape measure?
Easy to measure from the front of the bellhousing to the tailshaft of the tranny on both of them.

[70-K5]

If you have both setups you can measure as the ^^ mentioned.
Something else to check is if the slip yoke on the drive shaft uses the same splines on both tailshafts.

I've had driveshafts resized for about $150-$175 including balancing locally, that is an easy enough fix. If they need to swap a new slip yoke that is easy for them to do at the same time too, probably another $70.

[69heavychevy]

Originally Posted by geezer#99

Do you own a tape measure?
Easy to measure from the front of the bellhousing to the tailshaft of the tranny on both of them.

Yes I do own a tape measure...I6 mounts at different points on the frame and is longer than a SBC I would think. So what good would measuring the trans do?
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[69heavychevy]

Originally Posted by 70-K5

If you have both setups you can measure as the ^^ mentioned.
Something else to check is if the slip yoke on the drive shaft uses the same splines on both tailshafts.

I've had driveshafts resized for about $150-$175 including balancing locally, that is an easy enough fix. If they need to swap a new slip yoke that is easy for them to do at the same time too, probably another $70.

I'm on a budget so I'm trying to save wherever I can.
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[geezer#99]

I assumed you where putting the 350 back in at the same bell location. You didn't say. If you measure them both and figure out the difference (if there's is a difference) then you can move your motor so you don't need to mod your ds.