GMGN1 3.5 inch Drive Shaft 700HP rated ??

Scarab

Member
Joined
Nov 8, 2007
Just ordered a GMGN1 Drive shaft for my buick, it is rated for 700hp and I think it is the same one Kirbin sales. I got it for 429.00 shipped from Ostar Motorsports. Anyone have any info on these? Are they worth the money? It has to be better than stock one. It is a 3.5 inch.
 
Guess it will also depend on what model U joints are supplied. Spider 1350’s for the win, but could be 1330’s ?
 
Probally 1330 solid but will not know untill it gets here.my car is not a racecar so i hope holds . Kirbin's website doesn't say either. Ibelieve this the same one he sales.
 
Your build won't push it to its limit. You should notice it runs smoother at highway speeds.
 
Whats the largest diameter shaft our cars will accept? Is 3.5" the limit?

I bought one from a local years ago that moved up to a 400. I THINK it was 4 inch. He had it specially built. Overkill for what I what I was doing, but I got it for a price of a cup of coffee. I noticed the car was wayyyyy smoother driving on the highway.
 
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