blackssz

Just wondering why that pully is set up for a key way
when the crank is not keyed.Also wondering what keeps the pully
from spinning on the crank?

racecar

Nothing keeps it from spinning except the bolt in the end. When I built a new motor, I had a groove cut into the crank, and keyed it, No worries.

DuronClocker

iTrader: (25)

Well, the press fit keeps the pulley from spinning and the bolt keeps the pulley from backing off and losing its tight press fit. Aftermarket pullies are keyed because many people have their cranks keyed when going forced induction, or high RPMs, etc.

drivinhard

iTrader: (1)

I have an SLP pulley I'm installing and am using the 3/16" pin kit from ATI. Can't imagine why GM didn't key the cranks on these things from the factory. If no other benefit, you won't have to use hulk-like torque values for the crank bolt.

dpw41285

iTrader: (26)

Do you need to rebalance the crank after this? Not that i am looking into it but the knowledge will be benefitial.

DuronClocker

iTrader: (25)

As far as I know, no. But typically you get this done when rebuilding an engine and they will balance it after the keyway is cut and the bottom end is assembled.

TXZ28LS1

iTrader: (5)

hey are u guys satisfied with the slp pulley? i thought bout getting one.

DuronClocker

iTrader: (25)

Yeah its a great piece. Powerbond is the same thing but cheaper. I bought the SLP branded one because I needed it like that day.

TXZ28LS1

iTrader: (5)

hey the slp piece comes with the belts and all right?

Tom@SpeedInc

iTrader: (5)

SLP pulley includes new GM crankbolt

no belts

bpaulk76

Hey guys, is the crank/balancer bolt reverse thread (clockwise to loosen)? I am having trouble getting that bastard off and I want to make sure I am turning it the right way. Also, any suggestions about how to get it loose?

DuronClocker

iTrader: (25)

A huge *** breaker bar Its RHT, just very tight

CarnivorWS.6-01

iTrader: (7)

I just finished my install today. Like is said above use a big breaker bar to get it off. Standard thread counterclockwise to remove. I put it back on with an installer I bought. Very clean install. I read to many horror posts from people using old bolt and pulling threads on crank.

Tom@SpeedInc

iTrader: (5)

Need a HD 1/2" impact to remove the bolt, with the air line pressure cranked up.

Warm up the hub of the balancer with propane, mapp gas, acetelyene flame etc. the balancer should go on so easy, tighten the crank bolt to intial spec, index the position of the crank bolt (mark it with a dot of white out) then use the impact to move it 90*

blackssz

I was worried about installing it,but turned out to be easy.
would rec. 1/2 impact though

sunsetta

iTrader: (3)

Love the SLP pulley.