LS PUSHROD LENGTH TEST-IS LONGER STRONGER?

FULL PUSHROD LENGTH RESULTS-383 STROKER LS, 7.40, 7.45 & 7.50. CHECK OUT THIS COMMPARISON BETWEEN THE DIFFERENT LENGTH PUSHRODS ON A 383 STROKER LS. DOES THE PUSHROD LENGTH ACTUALLY CHANGE POWER? IF SO, HOW MUCH AND WHY DOES IT CHANGE POWER?