Silver Slayer

iTrader: (13)

Has anyone had to lengthen their drive shaft when converting (from a T56) to the Th400 short tailshaft?

From what I can gather it looks like the short tail shaft TH400 will move the mounting point towards the rear by about 1/2". It is also looks about 3 1/2" shorter than the T56.

I like the idea of the mounting point being closer to the T56 and being able to use the T56 crossmember, but I am worried about it being shorter overall and having to lengthen the drive shaft. I can have it shortened for free, but I will have to pay to have it lengthened.

The long tailshaft (9" tail) will move the mounting point about 1 1/2" past the T56 cross member mount, but is about 1 1/8" longer overall.

I do not mind sending the driveshaft back to be shortened, because I do have to send it back to have the Th400 yoke installed anyway. I just do not want to have the driveshaft lengthened and have to pay extra for it.

This is also on a Moser 9" rear, so would I have to make the driveshaft longer with the short tail shaft 400?

Thanks,
Kevin

Silver Slayer

iTrader: (13)

To the top

Fast SS on TNT

iTrader: (1)

Get a better driveshaft. Madman Racing sold me a complete setup for my TH400, including a billet input shaft. I know you think you can save a few bucks by using your old shaft, believe me, if your gonna run some serious horsepower, lose the stock drive shaft.

Silver Slayer

iTrader: (13)

I am running a Denny's nitrous ready driveshaft now. I can send it back and all the labor is free, I just have to pay for the parts to have it modified. If it needs to be longer, than I have to pay extra.


Does anyone know if it will have to be longer to be used with the short tail TH400

Thanks,
Kevin

Silver Slayer

iTrader: (13)

Anyone know anything on this?

MADMAN

iTrader: (4)

It will need to be longer with the 400.

Silver Slayer

iTrader: (13)

It will have to be longer with both the short and the long tail 400?

Silver Slayer

iTrader: (13)

If I get the long tail 400, are there any crossmembers that will bolt right up? Will my Lakewood drive shaft loop still work?

MADMAN

iTrader: (4)

You need the short tail it is stronger and if you are going to spend the money on the trans and carry the weight get the stronger version.

Silver Slayer

iTrader: (13)

Do you know of what crossmembers will work with the short tail? I would like to find one with the torque arm mount.

I appreciate the help.

Thanks,
Kevin

cablebandit

iTrader: (37)

BMR...it is designed for the short tail and has tq arm mount

john kilgore

you guys that are asking how long a d shaft will be have to know that there is not just one th400 yoke. so get the yoke you are going to use then get your d shaft made.

Silver Slayer

iTrader: (13)

I know there are three different tailshaft lengths.. I have a good driveshaft already, I am just trying to make my swap a little easier with less modifications.

I have the option of the short and long tailshafts for my 400, and I was trying to figure out if I would have to pay to lengthen my driveshaft or if I could get it done for free by shortening it.

It seems like if people spent more time reading the intial posts then they would have would understand more of what is going on.

john kilgore

l think you missed what l was trying to say. the yoke is the thing that goes from the output shaft to the front u-joint

black01_WS6

iTrader: (13)

spohn makes one just for your application. i would look them up.

Silver Slayer

iTrader: (13)

I was thinking that you were putting me in the "what length driveshaft do I need " category, sorry.

This is the first that I have heard of the yokes being a different length, what lengths do the normally offer? Are they typically longer than the T56 yoke, or shorter?

john kilgore

they come in many differant lengths. non will let you use your d shaft with out modification

Silver Slayer

iTrader: (13)

Well, I knew I would need a new yoke, but I was not sure about the length of the ds. I have the Denny's drive shaft, so the labor would have been free to modify it, except to lengthen it.

Thanks for the help,
Kevin