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GM 3790556 Clutch Fork Ball Stud (1 3/4 Long) Or 1.750 - 1.369 =.381 =9.6774 mm
You only needed 7-8mm, but a couple of mm is not a big deal. It is just the pivot point for your clutch fork rod. I installed a 21 pound SFI steel 168 tooth flywheel in front of my tko 600 and with the short ball stud sent by keisler the clutch would not disengage. So I went down to the local chevy dealer and bought the longer one
GM 3790556 Clutch Fork Ball Stud (1 3/4 Long) Or 1.750 - 1.369 =.381 =9.6774 mm
You only needed 7-8mm, but a couple of mm is not a big deal. It is just the pivot point for your clutch fork rod. I installed a 21 pound SFI steel 168 tooth flywheel in front of my tko 600 and with the short ball stud sent by keisler the clutch would not disengage. So I went down to the local chevy dealer and bought the longer one
I bought GM 3790556 from Summit (easy for me to buy there)
So I hope I will have it next week, so I can install my transmission again.
Almost same flywheel here, 23 pound, 168 tooth, so I hope I can fell the change compared to the factory flywheel, but also with the first gear ration in the T5 compared to the "slow" M21
Watch the flywheel bolts too- I just put an SFI 'wheel on my 496. The thickness of the hub was less and the ends of the flywheel bolts were way too close to the block for me. I cut about 3 threads off each bolt. Still have a couple of threads thru the flywheel flange.
Watch the flywheel bolts too- I just put an SFI 'wheel on my 496. The thickness of the hub was less and the ends of the flywheel bolts were way too close to the block for me. I cut about 3 threads off each bolt. Still have a couple of threads thru the flywheel flange.
Thx Tim, they clear the crankshaft, but I think I will take of 2mm or so, just to be sure.
Thx for the heads up !!
You have about double what I had before I cut the bolts down.
FWIW: I just found the numbers for my clutch ball height:
Flywheel deck .690
The factory ball height 5.112 (Lakewood housing and block plate.
The factory ball height explains why I always had very little travel on the clutch adjustment.
I got a longer adjustable ball and got the height right back to the factory 4.75. Clutch adjustment is midway on the rod now.
You have about double what I had before I cut the bolts down.
FWIW: I just found the numbers for my clutch ball height:
Flywheel deck .690
The factory ball height 5.112 (Lakewood housing and block plate.
The factory ball height explains why I always had very little travel on the clutch adjustment.
I got a longer adjustable ball and got the height right back to the factory 4.75. Clutch adjustment is midway on the rod now.
I will check my factory ball height also. But I don't understand where to measure from (sorry I'm not from USA:- )
Where do I measure from, what is a block saver plate?
I think I will go for Nord Lock washers, that will give the 2mm I need compared to the factory washers.
The block saver plate fits between an explosion proof bell housing and the block. All for containment if the flywheel/clutch comes apart.
Lay a straightedge across the engine side of your bell housing so it's over the clutch pivot ball. Then measure from the mating surface to the top of the ball. Look at fig.2 on the red outline picture buns posted.
The block saver plate fits between an explosion proof bell housing and the block. All for containment if the flywheel/clutch comes apart.
Lay a straightedge across the engine side of your bell housing so it's over the clutch pivot ball. Then measure from the mating surface to the top of the ball. Look at fig.2 on the red outline picture buns posted.
Thx Tim
Originally Posted by buns
^ Exactly.
.960 -.722
=.238
4.75 -.238
=4.512
So, by my calculations (someone could double check), you need to set the ball height at 4.512"
I cleaned up the diagram, leaving out the block saver plate.
This is great, it was the block saver plate that got me confused
Originally Posted by gkull
Depending on who you talk to the gm long might be 1.68 or 1.75
Thx gkull
Originally Posted by buns
^
Good point. There seems to be some confusion as to how they are measured. Centerforce suggests that this is the proper method.
10-24-2017, 03:22 PM
SFI flywheel
