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I originally purchased the 1LE drive shaft during my go fast days.
The real economic advantage will be from being able to grease the U-joints and not shelling out a U-joint on a road trip and/or having to go back to the drive shaft shop to spend another $100+ on a U-joint replacement in 50,000 to 100,000 miles.
The weight savings is fairly minimal. It was originally a go fast part.
I don't do the pulse and glide, if anything I will use EOC.
The rear axle on camaros, firebirds, trans am cars were all solid axle from 1967 to 2002, I don't know about the new 5th gen camaro. So that would make the axle partially sprung weight and 100% rotating weight.
There is an even lighter 4th Gen aluminum drive shaft but I have found they tend to fail in performance applications, the older 1LE aluminum drive shafts off a 3rd Gen is the one to have.
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1984 chevy suburban, custom made 6.5L diesel turbocharged with a Garrett T76 and Holset HE351VE, 22:1 compression 13psi of intercooled boost.
1989 firebird mostly stock. Aside from the 6-speed manual trans, corvette gen 5 front brakes, 1LE drive shaft, 4th Gen disc brake fbody rear end.
2011 leaf SL, white, portable 240v CHAdeMO, trailer hitch, new batt as of 2014.
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