Thread: newbie bbc owner in jetboat

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What you are trying to do is just get a little more time out of the engine before you need to pull the heads and do it correctly. At that time you can decide what upgrades you will make, but for now just buy some springs like the ones you are looking at and put those in. I would just put them back the way they were installed originally to avoid any hassles. When I worked in the marine business we sometimes had to do things to buy a customer a little more time, until they could simply get no more use out of the old setup, then it was time to break out the checkbook.

You might consider just buying a set of something like World Product heads down the road as the cost of doing a good valve job with related upgrades comes pretty close and most times the aftermarket heads are superior in flow and performance. They also usually come setup for roller rockers.

Pat may have a different take on doing that, and he would know best.

Don

the heads you have are good heads the world O ports are very very heavy i not sure i would be to fast on the gun to ditch the old head casting i do not know what shop rate is like were you are so thats your call on new casting .if fresh water engine alum heads would be a good move loose some pounds and get a better head . it all money so ?

Are the World Products heads heavier than the originals, Pat?

Don

Originally Posted by Itoldyouso

Are the World Products heads heavier than the originals, Pat?

Don

yes very much so there O port heads is one casting mold for there O port and rect port heads so the roof is about 3/4 thick iron on the O port head so this and the head has more iron over all makes for a very heavy head. were gm has two casting molds and the ports are much thinner on the roof of the ports, there is other things i have seen that i will not post on here so if you want to know more you will have to pm me

Hey thanks for the advise everyone. Yeah i went ahead and just did the quicky setup with new springs and all is good so far.
What heads would be a choice? Im looking to go aluminum?
Im leaning to just go up to a 496ci with a single holley.
Other choice that I like is to run a small blower. Ive got a buddy thats running one and it runs pretty strong. I think that if I get around 600hp I will like the outcome. Looks like I could build something that strong without too much expense.