4.3 and berkley JC

[Au Geezer]

Hi everyone, I'm new to the forum and could use some advice. I'm building an aluminum landingcraft type boat and have installed a Berkley 12JC and am about to install the 4.3 engine. I don't know what kind of performance this setup will give because (I'm assuming an A impeller because it was powered by a 455 before I got it) the engine has a lot less power than was previously used with the drive. Can anyone enlighten me on that? Also, what changes should I make to the engine for this installation. It is ann inboard engine but not set up for a jet. Thanks,.......Jack

[455maveric]

you will need them to cut down the impeller so it can get to the correct rpm for the HP curve

[Au Geezer]

Thanks for the reply, do you know how long it would take to have this done? Will it still work well enough to use or will it be really slow? I need to have it ready to go for the first week of June.

[455maveric]

it will be as fast as if it had a 200 hp SB in it it just will be reving higher how fast will it be depends on the weight & design of the boat along with the hp

[Fonz69]

If you can pull the impeller out yourself send it to Duane at HI-Techperformance he can cut it down and send it back to you asap:cheers:

Give him a call but I am sure it would be a quick turn around time:thumbsup:

417-858-8616

http://www.hi-techperformance.com/