Russell

Has anyone used a SPEC Clutch? If so what stage? Like? Dislike? Looking for a new clutch for my truck after discovering the transfer case adaptor is cracked and figured while everything is out it's thime to replace the stock clutch. Thanks for any replies.
Russ

Borush

I don't know much about the Spec clutches, but Standard Transmission has a stronger cast iron extension housing available for the NV4500/NP241.

Boyd.

99purplecummins

i have a spec stage 4..... in my 2000 ws6

holds like a mother!

watch out for there springs, they are kinda weak.... atleast in the ls1's they are

dodgeman01

judt get the SBC and forget it.
DM01

Russell

Thanks for the heads up on the cast extension housing. After some of my own research it appears that the higher stage spec clutches do not have a sprung hub, which I think wilol make them lousy on the street.

J.R. Adkins

Its a no brainer SBC.

J.R.

joefarmer

I wouldn't have believed it 3 months ago, but the SBC clutchs are awesome! I listened several trucks with heavy horsepower clutches and I would rate the SBC dual disk clutch as the quietest of the high horsepower bunch. Then I jumped into gsdog1's truck and the pedal pressure with a street SBC Dual Disk was almost non-existant. I'm a believer!

brandon. -DD

99purplecummins

we have 25k HARD pulling miles on our SBC and its held up like a champ. thats with comp, pump pierced, big fuel pump, and BIG off-road air filter