Heavy pedal effort and "grabby" clutch are related to the design of the clutch itself.
"Puck" type clutch plates seem to be the ones with a tendency to be "grabby".
I had a "high performance" Spec Stage 2 clutch that was heavy on the pressure. The clutch release bearing collapsed.
I replaced it with a performance Stage 3 unit from Bully Clutch (Canadian made) and it's awesome.
Heavy clamping, but with LIGHT effort at the pedal and very smooth when engaging/disengaging the clutch.
TWO other members in Calgary were amazed at how well the clutch worked in my car.
They changed their clutch to the same Bully Clutch I am using and are VERY HAPPY they did.
A 3rd member is doing transmission work right now and is considering getting the same Bully clutch as well.
Part number, pictures and website here: http://www.fiero.nl/forum/Forum2/HTML/129057.html
Calgary time/temp 3.4L Supercharged 87 GT
Click me Super Duty 4 Indy #163
[This message has been edited by fierosound (edited 04-05-2015).]