Clutch Help

[skyshark186]

I have a 73 FJ40 with the stock three speed and a chevy 350. My clutch is all but gone and i was wondering if any of you have the same setup. Do i need only the clutch kit for the three speed? Or do i need some extra stuff to accomidate the 350? Im really kinda clueless on this one so any help you can give would be much appreciated.

 

[Bennett]

There are lot of opinions on what can be used IMO. You will get many different answers..
some right , some not.

What bellhousing and clutch fork you using? ( cast BH)??

straight chevy cast fork= long throwout bearing
curved chevy cast fork= short throwout

The ten spline intput shaft on the LC 3 speed is NOT the same as CHevy ten spline. Close ans similar but not the same.
How do I know?.... the hard way.. pulled my engine twice before i got it right.
look at the splines straight on, they are different ..small but different. If you can use a Toyota disc behind the chev PP.. that's what I'd do. But be careful, even though it looks OK.. you will not know until it's bolted up like I did.
I tried but the inner hub of the OEM LC disc hit the CHevy Pressure Plate and I had to pull the motor. I had a custom disc made for the same price.

.
What I used.......
I use a Chev diaphram short throw pressure plate $55
" " a short chevy throwout bearing on my curved cast fork $20

I had a custom disc made.. chevy outer clutch mated to a toyota center hub/angle spline ..$47
One more important thing.. I had too much play in the clutch for mating to teh clutch pivot ball. .. it used up alot of my slave throw. after a new spring and filling in the top of the pivot ball and allowed no play.............

Shifts like a Honda civic now..


some of my post's from Pirate

http://www.pirate4x4.com/forum/showthread.php?t=263716

http://www.pirate4x4.com/forum/showthread.php?t=262340

bennett/berg

 

[skyshark186]

well.....that sucks. seems like you went through an awful lot of work. unfortunately i dont have the time or money to make mistakes. i also dont have the resources to pull my motor. but try finding someone to do quality work in Boise, Id on a converted FJ.

 

[Mace]

Try the chevy disk..

For the life of me I cannot find the difference between a LC disk and the Chevy disk..


Bennett. are you referring to the input shaft instead of the output shaft???


Personaly, I would get a SM420/465 (I heard someone has a cool adapter for it now)

 

[Pin_Head]

Try the chevy disk..

For the life of me I cannot find the difference between a LC disk and the Chevy disk..

Me neither. I don't get it. Other people say that they don't interchange, but I had both disks and trannys out at the same time and they swapped easily both ways. No problem and no detectable difference in fit.

 

[skyshark186]

so you guys think just go with the chevy parts huh? now the only problem is finding a mechanic hehe... thanks guys

 

[Bennett]

well.....that sucks. seems like you went through an awful lot of work. unfortunately i dont have the time or money to make mistakes. i also dont have the resources to pull my motor. but try finding someone to do quality work in Boise, Id on a converted FJ.

AS my dad say's... theres always time to do it over ..but never time to do it right.

The difference is straight cut splines on the chevy verses an angle cut spline on the toyota.
I tore the center hub out of my clutch because it had worn on the input shaft.
Sorry .. I meant input shaft.
Like I said ... I researched the lcml archives and found a zillion opinions. I have run into tons of chevy guys that are always crawling under their rig and fiddling with the cluthc adjustment. It just made sense to me to use the Toy center splined connection hub on a Chevy outer disc material.