350 Trans. Question.. - The 1947 - Present Chevrolet & GMC Truck Message Board Network

boataddict26 · 07-07-2003, 04:25 PM

I have a short shaft the is rebuilt and works fine. I also have a long shaft that is no good at all. Which is better to have, a short or long? And why. Could I switch the tail shafts?

boataddict26 · 07-07-2003, 06:56 PM

I have the long drive shaft for short tail shaft tranny. I was just wondering if there was some performance difference. Thanks for the info.

MylilBowTie · 07-07-2003, 11:43 PM

Generally the short shafts are a little better for performance w/ short driveshafts. I don't think there is a lot of difference between the two but I would go with the short shaft for strength also. Short/wides trucks have this little advantage because of less distance from the engine to the differential. I believe this to give them a small edge on long beds performance wise.

As far as gear ratios they should be the same.

If you have a lot of power and would like an O/D and cost isn't a factor there are ways around that. This is the setup I would like to have running. Hughes HD TH-400 with the 2.75 1st gear - 2200 stall - Transgo shift kit - HD trans cooler - gear vender over/under drive system - 3.42 gears or better (higher numerically) - Eaton Posi - any size tire you want to run.

Of course this is all suited to my engine. might be a little over kill but this to me is the best I can get for my setup.

boataddict26 · 07-07-2003, 11:48 PM

That sounds AWESOME!! But expensive. If that was all I had to save for I would get a performace set up like that. For now I will have to stick with the 350 and B&M rebuild kit.

07-07-2003, 04:25 PM	#1
boataddict26 Registered User Join Date: Mar 2003 Location: North Central Florida Posts: 726	350 Trans. Question.. I have a short shaft the is rebuilt and works fine. I also have a long shaft that is no good at all. Which is better to have, a short or long? And why. Could I switch the tail shafts? __________________ 1978 Chevy C10 Currently under resto. 350 Getting face lift. .060, JEpistons, Modify heads. More will come with money.

07-07-2003, 06:56 PM	#2
boataddict26 Registered User Join Date: Mar 2003 Location: North Central Florida Posts: 726	I have the long drive shaft for short tail shaft tranny. I was just wondering if there was some performance difference. Thanks for the info. __________________ 1978 Chevy C10 Currently under resto. 350 Getting face lift. .060, JEpistons, Modify heads. More will come with money.

07-07-2003, 11:48 PM	#4
boataddict26 Registered User Join Date: Mar 2003 Location: North Central Florida Posts: 726	That sounds AWESOME!! But expensive. If that was all I had to save for I would get a performace set up like that. For now I will have to stick with the 350 and B&M rebuild kit. __________________ 1978 Chevy C10 Currently under resto. 350 Getting face lift. .060, JEpistons, Modify heads. More will come with money.

07-07-2003, 11:43 PM	#3
MylilBowTie Right turn Clyde Join Date: Nov 2002 Location: Cincinnati, Ohio Posts: 2,911	Generally the short shafts are a little better for performance w/ short driveshafts. I don't think there is a lot of difference between the two but I would go with the short shaft for strength also. Short/wides trucks have this little advantage because of less distance from the engine to the differential. I believe this to give them a small edge on long beds performance wise. As far as gear ratios they should be the same. If you have a lot of power and would like an O/D and cost isn't a factor there are ways around that. This is the setup I would like to have running. Hughes HD TH-400 with the 2.75 1st gear - 2200 stall - Transgo shift kit - HD trans cooler - gear vender over/under drive system - 3.42 gears or better (higher numerically) - Eaton Posi - any size tire you want to run. Of course this is all suited to my engine. might be a little over kill but this to me is the best I can get for my setup.



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