I think last year I ran 5 tanks of fuel threw the boat at most. We just usually go for a burn around the lake and then just float around. I can get a set of vortec 454 heads for cheep but are they ready to bolt on? Do they have enconal exhaust valves right from Gm? I don't mind doing alittle clean up of the peanut ports or even the vortec heads but I just don't got the cash to dump a grand worth of work into them

Jd last year there was ice on the lakes until mid may lol

I would prob dig a set of l29s out of a dumpster and bolt them on , before trying to rework the 360s yea lingenfelter got big power out of peanut ports but thats lingenfelter. Vortec truck heads are cheap and the oem eaton valves seem to hold up well on most builds unless your going forced induction or making runs to cuba and back. At full throttle .

Sorry when I go to Cuba I take a plane. Ok so who wants to go dumpster diving and send me a set of l29's

http://forum.grumpysperformance.com/...t+heads#p44642

Everything you want to know....well maybe not.....$....... but is to the point and no guess work.

I freshened up a 454 in a '69 Chevelle a couple years ago. owner didnt want to spend the money on heads so we ran the peanut ports on it. we put a hyd. roller cam in it that made strong low end power because of the heads. it sounded great, pulled hard thru the gears but at 4700 rpm it hit a wall. the only way to turn more rpm was to push it off a cliff. if you pick the right cam it will run good and make good torque but plan to run a max of 4500 to 4700 and then you would need another cam when you do get better heads. build what you really want the 1st time and the expense will less than doing it two or three times because you are disappointed.

Two words--DUMP THEM. ANY rectangle port set of heads will almost double your cfm airflow. Just stick with iron heads. NEVER use alum. unless you have a closed cooling system.

Or you boat in fresh water.

You do know that your peanut port heads do not have inconel exhaust valves either, don't you? Merc only actually installed the inconel (Manley) exhaust valves in the blue Mercury Racing engines that were hand assembled. The black motors ran with whatever GM spec'd for them. Now I guess it is possible that GM spec'd inconel valves for the black motors, but I would have to have it proven to me.

Go fast where I live there is zero chance of salt water only fresh water. I would love to dump the peanut ports but it is not in the budget unless you plan on selling me some heads for cheeper than dirt.

Budman I never knew that Thanks. You learn something new everyday