I have the stock clutch out of my ’67 327. The current clutch is a stock 10.4-inch. I need something beefier and after careful consideration decided a Centerforce II is the way to go. Since I’m also getting a new flywheel I thought I should move up to an 11-inch clutch. According to Centerforce, the 11-inch unit can hold up to 100 horsepower more than a 10.4-inch. However, Centerforce also said the 11 inch may not fit my stock bell housing. Is this true,, and what do I need to use the 11 inch clutch?

That's correct Marktat, the bellhousing would need to be changed to upgrade to the 11". The top of the bellhousing slopes down just a tad faster with the 10.4 that makes a larger flywheel hit it on the top part. That's about the only difference that I'm aware of.
For what it's worth, I have a 327 with a 10.4 centerforce II clutch and have pounded it hard quit a few times with no problems at all. And my motor is not stock. Well, I did burn up a throwout but that was riding the clutch in a 1 MPH cruise one night. 3:08's :rolleyes: I've had the same clutch for 6 years and, uhhh, 20K miles, give or take.

Personally, I think the 10.4 would hold up fine. Now if it's a BB, that'd be a little different. I'd go with 11" smile.gif

The 10.4" clutch will hold up just fine. I have one behind a farily stout 400 small block and I haven't had any clutch slippage issues.

I've got a Centerforce 10.4 DF, 430 lbs torque, and I'm not always nice to it. It still works great.

10.4 with a centerforce, i took the flywheel to Napa,and had them machine it,
no problems, with it behind my 427 BB,
with the Edelbrock Performer,cam/intake setup,and hooker,and Flowmaster,American Thunder exhaust! smile.gif

[ 03-05-2003, 04:28 PM: Message edited by: cavemanmoron ]

Ok, thanks.