My 80e swap has begun

[jakedewey]

just a little update, they recommended a 5" diameter shaft, damn! you have the thickest shaft we've ever handled

thats what she said

[bud8fan]

just have to try and find out, some stock trucks use stock shafts and get away with it, some make it , some don't

he's right...mine didnt make it in my '05 avalanche.

[lechez71]

im gonna give it shot, my truck weights about half of an avalanche. i think it will hold up for now.

[farmtruc]

im gonna give it shot, my truck weights about half of an avalanche. i think it will hold up for now.

remember, at your power level, it's not about weight or hp, it's about how fast you turn that shaft and it's critical speed.

[2boosted]

So acording to your theory, if someone goes from 3.23 gears, 26" tires 1:1 @ 6800rpm, to 5.33 gears and the same tires...everything else remain the same, he will be snapping the driveshaft ??????

Or is just the longer DS as in AVEs, CC, EC tend do to more flexing at higher rpm?

Have you made some stats of how many RCSB have this problem, compare to the others?

[farmtruc]

One thing is certain, the faster u spin a driveshaft the more prone it is to breaking

Gears tires overdrive all affect critical speed.

Some break and some don't.

[CHEVROLADE]

One thing is certain, the faster u spin a driveshaft the more prone it is to breaking

Gears tires overdrive all affect critical speed.

Some break and some don't.

if u aint breaking,u aint going fast enough ...

yo you watching the fights tonight?Silva!

[RedHeartbeat]

Stands to reason. With 4.88 gears and running the 1/8th mile a lesser driveshaft will more likely survive longer than if it were taken to a 1/4 mile track and turned higher RPM. I've always wanted to put a high speed camera under a truck with a 4' or longer driveshaft running large number gears and pushing real power. I bet that driveshaft grows 6" larger in diameter by the time they hit the end of the quarter.

[PEWTERLIFTEDZ]

looks good zach...
I'm looking for more information on a 6 speed swap for my NNBS...
I've follewed Niffs thread on pt, I would love a write up about zachs truck..

[pl4yboy]

Stands to reason. With 4.88 gears and running the 1/8th mile a lesser driveshaft will more likely survive longer than if it were taken to a 1/4 mile track and turned higher RPM. I've always wanted to put a high speed camera under a truck with a 4' or longer driveshaft running large number gears and pushing real power. I bet that driveshaft grows 6" larger in diameter by the time they hit the end of the quarter.

Probably looks a lot like a jump rope.