Crazyhorse

Fred, are you looking into different exhaust this year?

fred

Crazy, I got a price on some stainless risers that dump the water farther away from the manifolds ( the guy makes them to my dimentions)......bought another new car so have to save some more cheese before that if I do it....Fred

robyw1

I have to quit reading all of these tech posts. It makes me want to quit my job and start building engines again. I guess I will never grow up.

Roby

BADINTN

Not to step on MACDAD260's thread, but what is anyone's opion on switching from a Dart intake from a 500HP currently on a 454mag motor with a HP cam and Stainless Exh. to an AirGap? Not wanting to run over 5200rpm, I'm not sure if the single plane intake is the best for my application, but I don't know if the change would be worth it.
Thanks, Brad

MACDAD260

Fred, The cam I have has 224/230 duration, .515/.520 lift and lobe separation of 110*. I think it is the one you are referring to. I am running stock center riser exhaust. I have thought about this cam a lot and have decided to go with it per Dennis Moore's recommendation. The lobe separation of 110* is the only thing I am concerned about but, according to Dennis, the way this cam is ground, with fast opening and closing lobes, the LS should help power and not revert water. My motor has less than a 100 hrs on it since a total freshening so I am going to use the stock springs and rockers. If I go with a cam that has higher lift I feel I would at least need to change springs and probably switch to roller rockers. The cost difference is huge so I am going to go cheap and see how it works. I already have the cam and I am pulling the motor out anyway. The only thing I need to buy is a set of lifters and some gaskets. If I can get from 63.5mph to at least an honest 65 mph on GPS I will be a happy man. That is a full 10 mph faster than the stock 7.4L. I love the 502. It really wakes up the boat and makes it a lot more fun to drive. See ya.

MACDAD260

BADINTN, No problem. I wanted to get some talk going about intake manifolds so you are welcome to post here. Good luck.

fred

MACDAD260, The cam card say's to insall on 106 CL, Dennis said to set it up on 110 CL I have the cam now but haven't ran it on the hose to see if there is any reversion.....I'm hoping it will work fine with my exhaust which is also a center rise stock type system.....Fred

blue thunder

Wouldn't retarding the cam 4* move the torque curve up in the rpm range? Usually we are trying to meve it down. Maybe I am thinking about it backwards or maybe it is ground with 4* advance?

Dave

rmbuilder

Dave,
A cam with a 110 LSA installed on a 106 ICL is ground 4* advanced. This cam installed on 110* ICL would be straight up. I don't have his reference available, but I would be surprised also at the suggestion to retard 4*
Bob

blue thunder

I guess if the plan is to spin it above 5500rpm straight up will be a good way to go. Thanks for the clarification Bob.

Dave