mark30h

im getting ready to put the 454 mag/alpha back into my 26 scarab excel. Havent ever run the boat, and its got a 14.5x17 turbo 3 blade prop. This seems a little small for the pitch. Any advice on the correct prop for this boat? Engine is pretty stock exc for a 420 type replacement cam, holley 750 and stock merc exhaust. Thanks.

Scarab28

My neighbor runs a 21p spinelli cleaver on his 22' Pachanga with the 454/alpha setup. (49 - 5000rpm) We tried a 23 mirage but it lost speed and RPM.

klmken

I ran a 25" Mirage on my 22'Pachanga BB/Alpha setup. I spun it to 5000 rpm. What spped was your neighbor getting with the Spinelli?

Badtoon

Call Throttle UP Julie and Matt can set you up and get you on there test program so you can get dialed in.

Scarab28

KLMKEN - He would do a solid 68 any day, and 70 when conditions were right. He dyno'd out at 425 hp. I built a similar motor for a different Pachanga witha B1. He did a solid 70 with a 23 mirage plus.

mr mercruiser

if you are runnin a 454 alpha you better think about runnin a set of hardened upper gears or you will be drivin toast-its not hp its torgue that will beat that drive to death

Scarab28

Normally I would agree, maybe the Pachanga being a light boat helps, but its a stock 19 year old alpha, mildly modified 454, and it shifts and runs perfect - knock on wood. How many B1's can say that?

mark30h

You folks from the roch ny area? we're in geneva, and boat the north end of seneca lake.

Scarab28

Good old Rochester - I boat on Lake Ontario, just west of the Genessee River - I'm sure you've heard of our infamous Fast Ferry. Do a search on some of Puder's Posts. He also has an older excel but he's modified it quite a bit. There are about 10+ Scarab excels that often post under the Scarab section. A couple near Lake George, some by the Hudson. Good luck with yours, I'm forever modifying something on mine - it's a disease.