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bbc aluminum heads?

Posted: Sat Mar 10, 2018 6:58 pm
by Shippee123
looking at looking some weight off my bbc setup and me going on a diet ain't the answer! finally got boat riding the way I want and handling great just that she's a little hefty in the rear with the big block. I'm trying to figure out what the best aluminum head would be for a stock 454 with no mods other than it has a rv cam being dd. I would love it if it gained some power but mainly looking at weight loss.
I see fairly cheap pro comp heads to Brodix heads on the market but don't want to buy something that will hurt motor performance being just stock.
thanks for any input

Re: bbc aluminum heads?

Posted: Sat Mar 10, 2018 7:00 pm
by Shippee123
signatures from old boat. 13'6" by 8' alumitech with 70 inch super snapper.

Re: bbc aluminum heads?

Posted: Sat Mar 10, 2018 8:07 pm
by Aeon
depending on what iron head you have now you might hurt performance. If you have peanut port heads now and switch to a more free flowing alum head you will find your power might come on a bit late for your DD application. a lot of work to save 70 lbs.....

Re: bbc aluminum heads?

Posted: Sat Mar 10, 2018 8:34 pm
by Shippee123
yes it has peanut port decked 40 thousand,119 cc .that was reason for my concern. I definitely don't want to hurt my performance!

Re: bbc aluminum heads?

Posted: Sun Mar 11, 2018 10:20 am
by SWAMPHUNTER45
From what I have seen most of the time with a DD application with going to a high performance aluminum head the weight loss is negated by loss of low end power.

Any time you can shave off 50 pounds it's nice but if the light weight replacements have big valves or large ports you lose low rpm velocity. The aftermarket world is building products in most cases to enhance high rpm horse power not compliment low rpm torque.

In a DD application a HD truck or RV type component generally better fits the need.

Important things to consider regardless in your comparison will be combustion chamber CC, valve size, valve angle, rocker ratio, piston to valve clearance, port shape, port length and size. A long runner of a stock size with a smooth and even radius will probably prove the best design. Be aware some of the cheap stuff being sold has substandard valves installed and they tend to fail early as the alloy is inferior.

Re: bbc aluminum heads?

Posted: Sun Mar 11, 2018 12:31 pm
by Shippee123
ok thanks for the info, may just stick with what I've got being it performs good the way it is. I found some oval port aluminum heads with 290 and 300 cc intake runners but I'm not sure what stock peanut port setup is.

Re: bbc aluminum heads?

Posted: Mon Mar 12, 2018 9:53 pm
by Blownaway540
Is your intake, water pump and radiator all aluminum? Those will save some weight.