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View Full Version : 16's with 4.3??



HyperDonzi
05-03-2003, 05:16 PM
What rpm's and propsize is everyone turning with a 4.3? We have a 14x19 spun to 5000.

Speed-Racer
05-03-2003, 05:32 PM
Hyper

We are running a 23P Mirage+ which turns
48-49,000 It works best for us. We also have a 23P Vengence with smaller blades for Saltwater, which turns 5,000 but in rougher water we can't keep it off the rev limiter....any problems with that?

BTW- Are you carburated or MPI? What's your top speed (GPS)?

HyperDonzi
05-03-2003, 05:49 PM
carbed, it is a 1990 with somewhere around 1300+ hours on it. Dont have GPS, and it is a Baja....Faria speedo reads high high 40's.

Speed-Racer
05-03-2003, 05:56 PM
Hmm, Well it seems to run Pretty good, considering it's what a 19FT looking at your profile now...?

HyperDonzi
05-04-2003, 08:30 AM
19' and as light as a 16. Im thinking of putting some Vortec heads, matching intake and a 4v carb on it. What size prop would you think I would need for 4800max rpm?

smokediver
05-04-2003, 01:20 PM
hyper, What ratio do you have ? I tried a BUNCH of props and I settled on a laser2 24 p. It all depends on what it is you are looking for performance wise.. The vortec heads have one big strike against them... as far as I know, there is no one making an aftermarket intake that fits the newer engines...I think marcdups could give you some good info on your setup... he did a lot to his ...

HyperDonzi
05-04-2003, 04:00 PM
I will try to just get the ones off a Vortec motor. 1.84....a 24? how many rpms?