Ok, putting a T700 in my SLE is going to require some tailshaft mods. With this in mind I would like to get peoples thoughts on whether to go for a one or two-piece tailshaft?
Tailshaft - Single or 2-Piece???
Ok, putting a T700 in my SLE is going to require some tailshaft mods. With this in mind I would like to get peoples thoughts on whether to go for a one or two-piece tailshaft?
As far as I know a lot of people use a 1 peice tailshaft but I have been told that in rare circumstances as the rear of the car moves higher away from the diff theres a chance that the tail shaft can and have actually pulled out of the box but this would depend on ride height and lots of other stuff and how well the length was measured.
All I do is put it in neutral and rev like bam bam bam bam bam bam and then select D for maximum respect!!!!
a single will also hit the floor around the centre bearing area with a single peice.mods to the floor ARE needed
maybe do some measuring.u might be able to use say a VN front half of the tailshaft with a stock rear half. remember reading this years ago in sc in the writeup of a T5 equipped V8 VK.used VN front half vk rear half
in the v8 super cars of that era as far as i can remember they stayed with the 2 piece shafts but they where beefed up some how the reason they stayed with 2 piece was something to do with correct uni angle so as not to loose hp
in the opperation drag police car we run a 2 piece shaft. it runs 10.86et and does burnouts displays most weekends and has never broken a shaft.
Yeah, I did the half-half tailshaft thing when I converted to a Borg Warner Diff........used the rear half from a VL and my existing front half - wasnt quite sure if it would work with the VQ front half for this conversion though? Anyone tried?
why don't you think it will work the only reason i can see it wouldn't work is the length may be incorrect or the unis the wrong size
Wasnt sure if the drive-line length was the same in VH's & VQ's? Its hard to measure up as I am not sure where abouts the T700 will finish up under the carriage length wise.
the only way i knoe how to get the right length is to get it all set up in the car then take the car to someone who makes tail shafts or find out the correct way to measure it up in the car
Nothing wrong at all with running a 2 piece shaft.
dont quote me on this, but i think you will need the VN v8 front half and the VL rear half.
while your at it, use a VN V8 CV and get the tail shaft balanced
in my vk i have a t700 and a 10 bolt... i used a vn front and a vk rear. but make sure you get the lot balanced. all up including balancing cost me $150
if its fast i want it
Sweet, exactly what I wanted to hear! That gives me a bit more confidence and saves on cash too. I have had tailshaft work done twice before so I know how important the balancing side of things is.Originally Posted by MRCALAIS5L
Yep 2 peice is the way to go. Hardy Spicer are making mine up and it will support up to 600hp apparently.
2 piece is definetly the way to go.
i was comcerned about the puny size of Daryn's shaft, but the fella at Hardy Spicer reckons that the shafts handle a lot more torque, due to the shorter lengths involved when compared to a one piece shaft.
the longer your individual shafts are, the bigger they need to be, by an increasing exponential amount( HUH?) - 2 shafts half the length will handle 8 times the torque at the same diameter, or something like that
also, pinion angles aren't an issue with a 2 piece shaft, due to the cancelling affect of the centre bearing. they are an issue with a one piece, but the angles change with suspension movement, so any movement of the suspension will screw around with your angles if you have a one piece shaft.
just think about how the universals work.
your shaft must move backwards and forwards twice about 10mm for each rotation of the tailshaft. that's a hell of a lot of harmonics
If a man says something in a forest, and his wife isn't there to hear him................is he still wrong?
I hear ya Wabbt, and its what I had thought to myself also......why have the universal, CV etc unless there is a fair bit of movement in every which direction! I just always wondered why some modified cars went for the single option????? I guess it may make sense in a drag car where there is a stright track that is relatively flat, but apart from that I cant think of why you would go single?
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