[HWYSTR455]

I can't tell 100% from the pic and with the boot on, but yeah, the fork angle looks ok.

Now I understand what your reasoning is to swap the setup, but let me say, the two that are listed, one is a 10.5" and the other is an 11" 'vette style, and are basically the same setup except for diameter.

So the two numbers for clutch sets are 1104019 and 1104020, the 19 is a 10.5, the 20 is the 11", so I am guessing you got the 19 setup?

There is also a 1104021 setup, which is listed for a 70 Chevelle, if you're going to the counter and plan on comparing, might want to take a look at that one too. It's also a 10.5 setup.

The 20 is listed for the 454, which makes sense. That same 20 is listed for the 70 Firebird, fyi, but again, it's an 11".

I'm pretty sure all the NAPA clutches are SACHs, which are pretty good OE replacement setups, but if you were going to go through the trouble to exchange the one you have, I would suggest you mail order a performance setup like a McLeod or Hayes. That of course is IF you choose to exchange the one you have. (While you're at it order a shifter pit pack, you need that anyway)

When the tines, or fingers, are more flat, to disengage, they need to go past center, on a raised finger pressure plate, they go flat to disengage. The flat finger pressure plates are usually lighter pedal effort, just to say, so that might be why you feel it's not disengaging or moving (actuating) at all.

Now that it's all together, you have all the slack taken out of the linkage? And when you press the pedal, how does it feel?

Next step is to take an air gap measurement, to determine if the clutch is disengaging. That is done with someone under the car, with a feeler gauge, stuck between the flywheel and the clutch disc, while someone pushes the pedal in. In general, the measurement should be in the .030 - .050 range for a street diaphragm pressure plate.

Once you determine that, you can move on to the free play measurement, which is required to allow for wear and pressure plate finger 'growth' at RPM.

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