Offshoreonly.com - 500 HPs in a 312 fastech

Page 2 of 2

Show 40 post(s) from this thread on one page

Offshoreonly.com (https://www.offshoreonly.com/forums/)

- General Boating Discussion (https://www.offshoreonly.com/forums/general-boating-discussion-51/)

- - 500 HPs in a 312 fastech (https://www.offshoreonly.com/forums/general-boating-discussion/143385-500-hps-312-fastech.html)

t500hps

10-22-2006 08:18 PM

Re: 500 HPs in a 312 fastech

Quote:

Originally Posted by mpally

I would have thought it would run north of 80. How much does the 312 weigh?

Depends on if your looking at the speedo or a GPS. :rolleyes: My 312 had stock 502 mags and was 8,000 lbs dry. Regularly saw 76-77 on the speedo, but the GPS was 71-73 (my bottom could have used slight work for better speed). Remember the 312 has a step, but it's a small single step. I figured the extra 55 HP per side will give it another 5-6 MPH. This guys boat should be ready soon.....guess we'll find out then.

t500hps

10-22-2006 08:23 PM

Re: 500 HPs in a 312 fastech

Quote:

Originally Posted by offshoredrillin

my old 311 had 502's and had 26's, straight hull older and heavier, I would start at at least 30's...

The 312 is an entirely different boat than your old 311. A good 2 feet shorter, lighter, and looks more narrow at the bow (and the single step is only slightly beneficial). Every 312 I'm aware of had 1.65 drives and 30 pitch 4 blade props when powered by the 454 and 502 mags. I believe the 454/310 had 28 pitch but not sure.

All times are GMT -5. The time now is 07:37 PM.

Page 2 of 2

Show 40 post(s) from this thread on one page