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500 EFI RPMS at Top Speed on 353?
Added some Blue power to my 353 this summer.
Trying to figure out props, as I'm running Bravo ZXs, 30' Bravos - no extension boxes. The water / air temps haven't been right for a good run, but have noticed I'm only at 4500 RPM - trimmed to 5 (probably could have gone more on trim) on an 87F day. Tabs up RPMS seem low - but before I got into too much cruiser chop I was as at 75 on the GPS. The boat run 55@3500, 65@4000 trimmed to 4 - which are great numbers for my boating - Tabs Up. I think I have the stock 500 EFI drive/prop setup. Wondering if Formula tweaked the props for the 353 or if they were out of the box? Or do I have something limiting my top end power (verified blades are full open on the TB)? |
I have 500 efi xr drives and stock bravo 30s no boxes. turns 5k at 76-77. my lab 30s ran the boat 80+- at 5200 started back at zero with these stock 30s and will have them tweaked to run 5200 and my lab 30s turned into 31s. this winter. i do run the boat at 5-6 on the trim
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Awesome, thx for the info. I was able to hit 78 at 47-4800 at 5-6 on a calm night, should get to 80 with some chop and cooler temps. the Boat accelerates out ohop but but only had a few boat wakes to run across.
Bought these props off my buddy, he played with props on his Cig and can't say for certain if B-Blades didn't touch them (he had 4-5 sets). They are not labbed, but wondering if they are 31's on 30 hubs. |
Originally Posted by snowrunner
(Post 4753155)
Added some Blue power to my 353 this summer.
Trying to figure out props, as I'm running Bravo ZXs, 30' Bravos - no extension boxes. The water / air temps haven't been right for a good run, but have noticed I'm only at 4500 RPM - trimmed to 5 (probably could have gone more on trim) on an 87F day. Tabs up RPMS seem low - but before I got into too much cruiser chop I was as at 75 on the GPS. The boat run 55@3500, 65@4000 trimmed to 4 - which are great numbers for my boating - Tabs Up. I think I have the stock 500 EFI drive/prop setup. Wondering if Formula tweaked the props for the 353 or if they were out of the box? Or do I have something limiting my top end power (verified blades are full open on the TB)? My 353 has 525's with Bravo XZ drives and boxes... I run 30's on mine..OEM pitch according to build sheet..and have no issues seeing 5200/5300 Rpm regardless of crazy temps we've had this summer...Boat has a recorded top speed of 87 mph...but haven't had the opportunity to try myself (new to me in July)... Just thought I'd throw out info we are running with |
Thx for the info. I was not aware they shipped 500 efis with 26’s, my 502’s had 28’s.
my understanding is 30’s were on 500 efi/zx setups and hit 80. May explain why 26’s run mid 70’s |
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