Irs
I have a Dutchman 9" Ford center section coupled to a custom modified / installed Guldstrand 5 link. The drive shaft and half shafts are 4.5 inch OD 4340 chrome moly DOM tubing. A mechanical engineer friend of mine said they should hold up to 1500 ft. lbs. torque. My only worry was the universal joints -- but I used u-joints and yokes meant for a large Ford dump truck. I've changed them twice in two years just for peace of mind. I don't want an errant half shaft permanently installed in my behind!
My intended use is open road racing like the Silver State Classic and the Big Bend race. Many more straights than Laguna Seca, hence the use of a big block.
While that sounds nice it's still alot of HP against an IRS, but I suppose you don't make many (if any) real passes down the quarter mile so it should hold up.
Given what a stock Z-06 did recently @ Laguna Seca with a hell of alot less HP than what you have I'd bet the farm all you would do is look at it's tailights !
I have a Dutchman 9" Ford center section coupled to a custom modified / installed Guldstrand 5 link. The drive shaft and half shafts are 4.5 inch OD 4340 chrome moly DOM tubing. A mechanical engineer friend of mine said they should hold up to 1500 ft. lbs. torque. My only worry was the universal joints -- but I used u-joints and yokes meant for a large Ford dump truck. I've changed them twice in two years just for peace of mind. I don't want an errant half shaft permanently installed in my behind!
My intended use is open road racing like the Silver State Classic and the Big Bend race. Many more straights than Laguna Seca, hence the use of a big block.