.5" PR Valve, will stock CZ spring work?

B

bry593

Guest
I have disassembled the pump of my '87 CZ trans in preparation for upgrades: .5" PR valve, treated stator support, etc.

Questions:
1. Will the stock CZ, PR spring be compatible with the larger (.5") valve?

2. My preference for shifts is Heavy Duty, not Pro-Street. Should I install a shift modification kit, or stay with the factory mild performance calibration.

Much thanks,
Bry593
 
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