What props on a 39 stinger? Running N/A 496 550 hp 600trq TRS 1.5 What prop came on them from factory with 330 hp mercs?

Probably 3 blade cleavers or mirage props came stock. If your props are deep, which they probably are, a mirage plus 25 might work good for you. I've had good luck with the 4 blade revolution props with big trs boats too.

Mild Thunder
Am I correct in thinking the 39 stingers came with 330 hp TRS and 21 props and would run around 50- 55 ? So the rule of thumb I think is 20 hp 1-1.5 mph so If Im around 200hp per side more and 300trq. shouldent around 70- 75 mph be possible? Witch I think means a 26 or 27 pitch? Do you run 4 blades? Seems like most people are scared of 4 blades on TRS or just be real carefull. Whats your props and speed hp?

I have roughly 600HP motors. I have spun a 25P revolution to about 5400RPM and about 71-72 mph.

I would say that a old 39 stinger with 330's came with 19P. My Old Excalibur Hawk 40 was the same hull as the 39 stinger. With 420HP per side, I spun a 22P Hydromotive to about 5000.

Do you know what RPM your motors should be spinning at WOT? I would say to start with a 24P bravo and see what kind of numbers you get. Where you boat, I would not hesistate to run 4 blades, just go easy on hole shots, and keep the drives in the water.

oh, I would think that with 550HP per side, your probably gonna be upper 60's , probably 70 at best.