Installation of McLeod Street Twin Clutch

This is a twin disk clutch, compared to the single disk stock clutch. It will hold much more horsepower than I'll ever be producing...but then you never know what modifications you'll do down the road. However since I was replacing my stock clutch for the second time I decided to put the best in. Originally when I purchased the McLeod a modification to the slave cylinder was needed (some people reported that it was better to NOT modify the slave cylinder) to make it work. However, I wasn't able to install the clutch immediately and during that time McLeod came out with a new Master cylinder which eliminated the problems with the slave cylinder modification, so I purchased the new master cylinder as well.

I describe the installation since the pictures are better after all the oil has been cleaned up. Obviously if you follow the directions from last to first that will give the disassembly procedure.

Two important things to remember: First, notice that McLeod places a mark on the flywheel, floater, and pressure plate that must line up when installed. Second, make sure that you note the location and number of shimms and make sure none get lost.

This first set of pictures compares the stock clutch on the left with the McLeod on the right.


this is the flywheel	this is the first clutch disk	this is the floater plate (stock doesn't have this)

this is the second clutch disk (stock doesn't have this)	this is the pressure plate

1.		The first thing you should do is remove the original clutch and take the original flywheel and your new McLeod to a good machine shop. The LT1 engine is balanced externally by the flywheel. The machine shop can check to be sure that the new McLeod flywheel matches the stock balance. Mine was right on but others have had to make some adjustments (remember every car is different). The machine shop also checked to make sure that the floater and pressure plate were neutral balanced. My machinist only had to remove about 7 grams from the pressure plate. He thought this was excellent since he finds most other clutches off by 40 some grams. This first picture shows the amount removed from the pressure plate.
2.		On the back of the flywheel there is a weight. My machinist recommended applying some red locktite to the bolts that hold this weght on. I removed the two 3/16 allen bolts that hold the weight and applied some Permatex high strength red threadlocker (27100) to each bolt and torqued to 20 ft lb.
3.		Installed the flywheel on to the crankshaft and attached with the supplied 3/4" or 19mm Bolts. Used a little Permatex medium strength blue threadlocker (24200) and torqued to 65 ft lb in a star pattern. Note the marker on the flywheel (1 o'clock position) that the marks on the floater and pressure place will line up with.
		Note: you may want to replace the Clutch Pilot Bearing if your up in milage. I mention this here since the bearing can be replaced with the flywheel on or off. Click the link to see how.
4.		This picture shows both clutch disks positioned so that you can see the hub side (disk on right), which goes toward the flywheel, compared to the other side.
5.		Place the first clutch disk into position.
6.		This picture shows the floater plate with straps toward the flywheel. The mark on the floater is aligned with the one on the flywheel (shown in the next picture). The three bolts (not yet tightened down in this picture) go through the lock washer, then the floater straps, and then the shims, and then into the flywheel. Applied a little Permatex high strength red threadlocker (27100) per McLeod's instructions, to each 1/2" bolt and torqued to 25 ft lb.
7.		The second clutch disk is positioned with the hub side toward the flywheel.
8.		This picture shows how the pressure plate goes on. The little shims, the big spacer, the washer, and finally the 9/16" nut.
9.		Use the supplied alignment tool to align both disks and then tighten the pressure plate nuts in a star pattern. torque to 35 ft lb. Notice that the mark on the pressure plate is in line with the flywheel and floater marks.
10.		Finally the bellhousing is installed with six 9/16 bolts and torqued to 35 ft lb. I replaced the original bolts that had been slightly rounded with these new ones.

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