Prop question/suggestion/problem

lcgordon wrote: lost out on shipping

when is that not the case?

The highest price isn't always the best price. You did your friend right. Shipping charges are to be expected, just part of the game...

Just got the chance to try the Oj 13x12 brass prop and I lost 2mph so was going 40 but gained 500rpm. It went up to 4790 WOT

Yes not xmp its a old one

Um loose some weight you fat so

LaurelLakeSkier wrote: 8122pbrainard wrote: Mark (LLS) sold his inboard and bought one of these. He could never get the 1 or 2 extra MPH out of his inboard for footing Just to set the record straight, I did get the top end I was looking for on my inboard (although there's always room for more) but along with a different prop, it was with the addition of of GT-40p heads, an Edlebrock intake, a Malory distributor/ignition that allowed for more advance. GPS barefoot speeds were just shy of 44. .

Mark,
I thought the day we were doing all the GPS runs was AFTER you had done all those mods and you still wanted the 1 to 2 MPH more!

8122pbrainard wrote: LaurelLakeSkier wrote: 8122pbrainard wrote: Mark (LLS) sold his inboard and bought one of these. He could never get the 1 or 2 extra MPH out of his inboard for footing Just to set the record straight, I did get the top end I was looking for on my inboard (although there's always room for more) but along with a different prop, it was with the addition of of GT-40p heads, an Edlebrock intake, a Malory distributor/ignition that allowed for more advance. GPS barefoot speeds were just shy of 44. . Mark, I thought the day we were doing all the GPS runs was AFTER you had done all those mods and you still wanted the 1 to 2 MPH more!

You're right Pete, that was after the heads and intake. I think I was trying to dial in the timing advance when we were making those GPS runs. After that testing, I added the YLM distributor since I couldn't get enough total advance out of the original without altering the initial timing beyond where I could start the engine easily. As I recall, top speed was 48.7 mph and it would run 43.9 with me at the end of a rope. It was a strong runner and had a great slalom wake but the barefooting wake/table was the reason for a different boat.

Im not a twig haha. Thats why ill be 20 min late tomorrow morning im going to a workout class. Ill meet you guys out there.

Must be time to update this, I've seen a little mention of it in the barefoot thread

lcgordon wrote: stock prop 42 mph

This is a [13x13] 3 blade OJ Legend?

lcgordon wrote: Update from today put the [541] prop on and it pulled me about 40 footing and it was bouncing between 41-42 with not footer. It had lower rpm from the stock prop too by maybe 50 or so.

Ive got a question. So I narrowed down that the best prop for my boat is an old dented brass oj 13x13 for top speed. The last prop I tried was the OJ xmp 13x11. Would this mean the best for my boat could be a cnc 13x13? I tried the acme 541 and it was a bit slower. I know you cant compair different brands exactly but from the reviews I have seen cnc oj and acme are super close. I mean a cnc 13x13 has got to be better than a brass 13x13? Or am I stupid? Dont answer that.

I talked to eric again and he recommended the 11.5. Im kinda tired of screwing with this crap knowing that what ever I buy im still gonna need an outboard to get anything good.

OOOOHHHH thats what I need. But If I could afford a 300 for it I might as well just buy a new boat haha. Its crazy what those things cost.

This weekend my buddy gave me a whip out so I could do a good butt slide and for a split second I was going real barefoot speed and it was the best feeling.

Im trying to talk my buddy adam into this really bad

Flightcraft

I think you are chasing your tail changing props as much as you have.
You are working a 350 Chevy in 6,000 feet elevation. Rated for 260 HP you might be seeing 190 at best at 6,000 feet.
To get the HP up you need compression. One way already suggested is to swap to Vortec Heads, they flow great and would bump compression but they would need a special manifold that might cost $250 more on top of the head cost.
There are several companies that offer good after market heads that would bump your power. Dart offers cast iron heads with 64 cc chambers that would bump your compression and out flow the factory head while bolting on with your existing equipment.   Should add 40 HP.   Cost would be around $800 but that is only two props!
AFR has some great heads also but much more money.
A set of vortec heads could be had for 500 but would need the new manifold and push rods adding to the cost.
I think the Dart heads run 2.02 intake and 1.6 exhaust valves which would help wake up your engine. A head change could be done in about 4 hours. At your altitude it would most likely run on regular fuel. At Seal Level it would need premium for sure.
Below 2,500 RPM you might not feel much but above that they should pull much harder.