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Old 12-19-2020, 07:41 PM   #1
Stephen717
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drive shaft length

ok so I have a 350 that I have most of the parts to build and I am going to put it in my truck in place of the 250 I6, for now I am retaining the Saginaw 3 speed trans but am eventually going to put a 4 speed behind it. figured I could save up to get a good transmission once the truck is on the road and later on I could put a gearvendors over/underdrive unit in the truck. my question though is when the 350 gets bolted into the truck will I need to increase the length of my driveshaft or does the 350 sit far enough back that its not an issue? any help would be greatly appreciated.

thanks
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Old 12-20-2020, 09:08 PM   #2
SeanB242
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Re: drive shaft length

Should be same location.
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Old 12-20-2020, 09:45 PM   #3
57taskforce
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Re: drive shaft length

I would leave the transmission in the original mounting spot and mount the 350 where it needed to go if that makes sense. I don’t play with two wheel drive trucks much, so I can’t tell you for sure which set of frame holes the engine crossmember would need to be in for it to work like this.
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Old 12-21-2020, 05:00 PM   #4
Stephen717
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Re: drive shaft length

Thanks guys, that should make things a bit easier for me
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