86 Velocity approx 1600hp TRS will turn the 34's 5000 rpm will I pick up any more rpms with the 32 6 blades or get the 34's labbed.

You would probably lose rpms at WOT with the 32" 6 blades vs 34" Bravos.

On my boat 32 maximus is the same as 36 bravo 1 rpm wise if that helps....

Old heavy boat, TRS deep in the water, 800hp I smell broken drives with the 6 blades. If you want more rpms you need to go down in pitch. Step down to a set of 32's and see if that helps. The depth of the TRS is hurting you. Only my opinion. What trans are you running?

worked over 72c

How about labbed 5 blade 32p?