Clutch Spring Assist - question

[Q1SVT]

Has anyone tested the spring rate or knows what it is?

The spring available is not for 351C or big blocks... They are for 302 or six cylinders [softer pressure plate]
That's okay for what I want. Looking for a spring to return clutch pedal to full up position, more so than assisting...

Since the bracket that holds the spring is not available, I'll fabricate something, I'm thinking a 2023 Steeda stang S550 spring @ 35# might be a good/better option.

Thanks

 

[Stanglover]

If you're referring to the clutch assist spring that mounts on the top of the pedal arm and the bracket, you do NOT need it there if you're using a diaphragm style clutch. I fact if you are using a diaphragm clutch, it MUST be removed and it can be a bi*ch to remove so be careful.
If you're using a long finger style (as original), then you need that spring.