Slack in throwout bearing

[weedoublewide]

Would the slack in my throw-out bearing be due to the fact that I didn't install crankshaft spacer that brings everything forward by 10mm?

05 lq4 6.0 --> sm465

Best regards,

double

[mongocanfly]

by slack ,what are you referring to ,side2side or front2back?

[weedoublewide]

Oh yea, that would be front to back slack and im going to answer your question from my other question on the other thread, its an OEM flywheel that came with the 6.0

[kipps]

Quite sure the spacer is only for the early engines. Yours should be new enough to not need it. You're probably seeing a 1/8" difference in flywheel position. I measured a stock small block with flywheel, and compared it to a 2010 ls with a 2005 6.0 flywheel. The ls engine spaces the flywheel surface 1/8" further forward compared to the old sbc engine. I'm using an adjustable pivot ball in my sm465 bellhousing to compensate for this 1/8" difference. It should work well, but is still not assembled(I got sidetracked on a AFM delete).

My bellhousing is an external hydraulic slave. If you have mechanical linkage, you might be able to compensate for that flywheel height difference in the linkage alone. You also might also reach the limits of the bellhousing window, by doing that.

I ran across a thread of some guy in Canada who installed a ls engine in an external hydraulic slave truck. He did not install an adjustable pivot ball, and reported the truck usable, but he had to either mash the pedal all the way to the floor, or extend the slave pushrod. I forget which.

Mr. Gasket 3885G Adjustable Clutch Fork Pivot Ball

Look for my post here.

[weedoublewide]

Wait now I'm a little confused. I thought the spacer was to make up for .4" since the later model motors dont have the long crank when mating with the older style transmission (for me its the sm465).

[hounddogs!]

Would shims between the throwout bearing and the input cover on the trans help? I've got some leftovers from my conversion to a hydraulic t'bearing. 0.0450" - 0.0475" ----- you could have four free for the taking.

[kipps]

Originally Posted by weedoublewide

Wait now I'm a little confused. I thought the spacer was to make up for .4" since the later model motors dont have the long crank when mating with the older style transmission (for me its the sm465).

I also got confusing signals when researching that. All I can say for certain, is my 2010 LMG with a 2005 6.0 flywheel places the friction face 1/8 inch closer to the block face compared to the 1987 small block. That's actual measurements.

I'm confident that an adjustable pivot ball will take up the difference in my application.