33 Scarab AVS performance test
33 Scarab AVS performance test
I have run this boat with full tank and 400lbs pass 28 p bravo props. 502 dead stock GM 502s 850 Holly carburetors. would Max out at 70 mph 5050 rpm With 502 MPI's with mods on them they world would Max out at 73 miles 5150 rpm Now I am Running 502s with Holly HP system and AFR 305 heads The boat has picked up a massive amount of power it runs 79.6 mph at 5700 rpm I expect the boat to be faster. I am thinking of new props, aligning drives , tuning more, timing , Checking the boat etc. Any thoughts? |
Not sure what is up with your set up, but it should be faster.
A friend of mine had a 33 AVS with stock 502mpi's and it ran upper 70's and he hit 80mph with shorty lowers. |
https://cimg1.ibsrv.net/gimg/www.off...01d3589dd4.jpg
2/3 tank 4 pass today with trim at 4 san Francisco |
Like I told you in our conversation before, Ive seen 85.2 gps with mine at 700 feet above sea level, stock 500 efis turning 30 labbed props w 1.5 gears BUT boat is very touchy. Struggled to hit 82 w std 30s and took 30 or 40 seconds to get from 78 to 82 mph with them Boat ran 78/79 w 28s on rev limiter at 5450. Those motors as ran in my boat made 510 or so hp on my dyno when I pulled them, Smitty
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What RPM at 85.2?
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Originally Posted by cyrus77
(Post 4715457)
What RPM at 85.2?
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Smitty, do you know who labbed the props? Trying to compile some prop shops and + results.
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Originally Posted by articfriends
(Post 4715363)
Like I told you in our conversation before, Ive seen 85.2 gps with mine at 700 feet above sea level, stock 500 efis turning 30 labbed props w 1.5 gears BUT boat is very touchy. Struggled to hit 82 w std 30s and took 30 or 40 seconds to get from 78 to 82 mph with them Boat ran 78/79 w 28s on rev limiter at 5450. Those motors as ran in my boat made 510 or so hp on my dyno when I pulled them, Smitty
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Originally Posted by tmmii
(Post 4715533)
stock drives and any boxes? |
Originally Posted by articfriends
(Post 4715558)
stock 1.5 bravos, not xrs orshortys , labbed 30s, called partial lab when i spoke to bblades (bought them used). Only mod is I turned rev limiter up 100 rpms on motors. Raced a local guy with same boat with 540s, he was running standard 30s, I could beak him by about 1/10 mph. My boat hated standard props FWIW
Sorry for the hijack. |
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