unbroken

How do these stack up? ANyone tried these out yet???

pullmytrigger

I have some on some motors I had built that Im going to put in this winter.......mine are stage 3 iron angle plug.....supposed to be as good as anything out there with the possible exception of AFRs which are really expensive

unbroken

Thanks, thats exactly what I have. Are yours EFI or Carb???

pullmytrigger

750 double pumpers........

AGGRAVATION28

Hey Trigger.....what rpm and mph increase did you get with the switch to revolution exhaust manifolds. If I remember, your engines are basically stock 350's, right? Looking to do the same thing but wanted to make sure it is worth the expense.

pullmytrigger

the engines are bone stock......ask Powerboat magazine, unless you can do it in the same day to duplicate exact conditions for comparison top end blast is really hard (fuel, pass load, temp, wind, water conditions etc).....but for sure Ive picked up 250 to 300rpm.....definatly more muscle out of the hole and in the midrange too.......the motors are stock so its not a crazy amount but you can feel it......the 100lbs/side wieght savings is worth it......would I do it again vs Revs WAY more expensive competitors......in a heartbeat!!

MESABALANCING

We've built many stock car engines with them and it's about one of the best heads you can use on a small block . My first boat was a Formula 202 I think was the model back in the 80's I built a 377 CI 400 block with a steel 350 crank and some 5.7 chevy rods I turned it 6800 with the bowtie heads and would run 73 mph on a three blade the heads were mildy pocket ported and gasket matched . Best of luck Laz

unbroken

Thanks Guys, they are being blueprinted and c&c'd as I type. Look sweet, can't wait to get them done.