So I started my pump rebuild project today and I thought some of you may get a kick out of this. I just bought the boat and was trying to figure out why it was so slow. I think I figured it out... Pics below are of my impeller hahaha!

-Colt

Wow, that’s impressive. I particularly like the pipe wrench marks on the nut also. Beautiful


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look for a letter stamped on it. Maybe a *b* cut? Hows the bowl? Danl

Probably a "B/C" Cut, or even a "C" cut.

your 4.3, is it a 190 hp or 225 hp?

190 hp and a B/C would be ~4100 rpm, and a 225 hp would be ~4300. (not likely)
190 hp and a C cut would be ~4200 rpm, and 225 hp would be ~4400. (most likely)

And yes, there is even a "D" cut, at least Berkeley lists specs for one, possibly another 200 rpm increase.

Turbo it with a 7.3 powerstroke turbo and have 400+ hp at the crank, Roadkill style.

Tom at Jet Boat Performance would know what it came with.

Dan'l

Update: today I made quick work out of the impeller nut and impeller. Impeller nut came off with the help of an impact wrench and the impeller came off with just my hands and elbow grease.

-Colt