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Has anyone tried this driveshaft kit? I've been thinking of doing that for my small to big block conversion.

Driveshaft kit from Mancini's



That was never balanced to begin with so I doubt it would even be close ...

But it seems the overwhelming response is to just weld it up an go ...

I guess we can put driveline shops right up there with automotive machine shops , balancing is just another money grab ...



not me..I have had it come out at 105 mph on I-75,it was out of balance/out of phase/home cut/weld..machine shop said it looked to have bent in the middle and then broke a u-joint/yoke weld.

speculating here,but seems thats what happend,vib from the git go and got worse at speed,let off and BANG!!

not to mention 2 mufflers,3 feet of exhast pipe,1 rear shock and one hell of a bang.

I will just keep my local shop in bizness,cuttin and balanceing my junk.

cant see puting 3-4-5 K into and engine and risk the balance on it myself,but then again i run used junk most of the time antways..but it does have the factory balance

do you feel lucky?..good luck with it?

seems a lot of guys get away with it,I did for a while,cost more in the long run though