McLeod Clutch and Pressure Plate
When you take out an engine, that is a great time to check the clutch and pressure plate. In my case, I had put a stock unit in it when last rebuilt in 1983. Not a lot of miles on it, but I did a parade for John Chun. I don’t do parades but this was a request from John. We did ok following a marching band until I got to this hill. If I’d let the clutch fully out I would have run over the band. Dilemma for sure. So I ended up giving it gas to go up the hill with the clutch partially engaged. Smoked it badly. The guy in the Mustang behind me said he thought my car was on fire. Oops. So my existing clutch and pressure plate was burned. Besides I was bumping up the horsepower so might as well bump up the clutch. The labor was going to be paid regardless so I went on a search to find a new clutch and pressure plate.
There are LOTS of new clutches and pressure plates available for this engine. Dan, the engine builder, told me to get a diaphragm pressure plate. OK, what is a diaphragm pressure plate? Turns out in 1968 the pressure plate used was a three finger unit. Often referred to as a Long or Borg & Beck style pressure plate.
The newer Mustang clutches are all diaphragm, meaning many fingers. The next question is whether to go with a stock level part or upgrade. I’m adding 100 horsepower. Racing clutches are heavier duty to handle higher end horsepower cars. But a racing clutch takes a lot more effort to engage a mechanical clutch and hold it in. I could have stayed at the stock level. My mechanic suggested staying stock saying I wouldn’t like a heavier clutch. My brother told me about driving across town in a car that had a racing clutch and he wasn’t sure he was going to be able to finish the drive using this real stiff clutch. I didn’t want that so I picked a clutch that was one step above stock.
The next question is to choose a vendor. Too many choices. After much research I decided to go with the McLeod diaphragm clutch and pressure plate. Excellent choice. I love this clutch. McLeod make it easy to see what levels their clutch and pressure plates are targeted at.
My Mustang had a 10.5″ clutch disc. The McLeod diaphragm clutch for my application was a 10″ clutch disc. Dan, my engine builder, said the 10″ would be fine especially since this setup was much better than a stock unit.
McLeod Clutch and Pressure Plate
Manufacturer’s Part Number:75213
Part Type:Clutch Kits
Product Line:McLeod Super StreetPro Clutch Kits
Summit Racing Part Number:MCL-75213
Clutch Disc Quantity:Single
Input Spline Quantity:10
Input Shaft Diameter:1.063 in.
Disc Diameter (in):10.000 in.
Disc Diameter (mm):254mm
Disc Style:Full face
Pressure Plate Style:Diaphragm
Throwout Bearing Included:Yes
Alignment Tool Included:Yes
Pilot Bushing Included:Yes
Mounting Hardware Included:No
Quantity:Sold as a kit.
McLeod Super StreetPro clutch kits are great Street/Strip performance clutches—perfect for use with moderate engine modifications, including intake and exhaust upgrades, camshaft and cylinder head work, and engine management programming. Super StreetPro kits provide a heavier pedal effort than stock, along with improved holding capacity, making these excellent high performance replacement clutches.
Additional features and benefits include:
* SFI-approved assembly
* Handle up to 500 hp
* Dual-faced organic and ceramic disc for smooth engagement with exceptional holding capacity
* Kits include a pressure plate, disc, throw-out bearing (unless specified otherwise), and alignment tool
My Thoughts on this Clutch and Pressure Plate
I was able to put about 300 miles on my Shelby before putting it away for the winter. Really, I’m still breaking this clutch in. But I like this clutch and pressure plate. It is a bit more stiff than what I had in it but not too much. it does a great job of grabbing the torque from this engine. It engages and gives you the confidence it will transfer the power to the rear end. Racing clutch with my racing engine.