Originally Posted by sprink58 (Post 3763802)

The 320 EFI was available as a special order in '86...I had twin 320 EFI's in a '86 272 LS with Alpha SS drives. Built in the Miami Plant summer of '86. The boat ran 75 speedo with 23" cleavers at 5800~6000 RPM. it would run an easy 60 at 4500.
:evilb:

Originally Posted by befu (Post 3776019)

You wouldn't happen to have one for the 272 would you?

Brian

Originally Posted by 88242LS (Post 3776436)

i didn't realize the 311 was 8'0 wide

Originally Posted by befu (Post 3776016)

OK, this strikes me as odd. The 311 sheet and the 303 sheet are both Sr1's and both have twin 454 mags bravo's (365hp).

The 311 is 3" narrower but 150 lbs heavier and 2' 9" longer with the swim platform.

I would have thought the 303 would have gotten better "milage", but the numbers posted by formula do not show that. Best for the 311 is 2.1 mpg at 28 mph at 2500 rpm. The 303 was only 1.7 mpg.

The 311 was faster and more fuel efficient than a boat almost 3' shorter? Did they just screw that boat up?

Originally Posted by cuposterchild (Post 3777013)

Grab the report that shows the data for the 303 with blackhawks. I think that will really surprise you. The 303 has a LOT of rocker in the hull so when it comes to shorter/surface piercing drives with the stock motors you should see a bit of improvement. Come to think of it anyone have anything on the the 302 402 kaama reports or the 303 blackhawk data?

Originally Posted by 88242LS (Post 3777016)

You nailed it, from what ive learned over the years is the 303 with 502/hawks is a 80 mph boat, I got the 502's just not the hawks, 1.36 bravo's and my best so far is 76,