As far as im aware of they all use the 3797 cam. Their is a different one for lower horsepower. The 7FB cam could be the 3012, or 3797. i would use either befor i kept the 8pn cam.I already have a set of 14.6.pistons. I have a early 7fb that i am going to rob the pump off .
also have a set of 3421 nozzles from same engine.
if need be i will use the camshaft from that engine also.
but if one of the higher horsepower marine or genset cams will do better like it does in
the E & C models I will go one of them.Just trying to see if there is something better.
There is no 800hp marine cam for a mechanical engine. The 580hp marine C models uses the 0r3787 and as well as the 587hp generator set engines that the 10r1439 cylinder pack comes from.If I remember correctly the 460 peec engine used a better cam.
but they now use the same #. I am in no rush as the engine runs
fine right now.I might just get a 800hp marine cam and get it checked
out on a cam doctor and see if it is the same as my 7fb cam.
Exactly what i was thinking Cody...why would a guy of his knowledge go and reccomend a 3421 that in any other post of his would say it doesnt match the bowl?? And yes their was good reason why they stopped offering the 3012-13 cam in them and it wasnt cause it made too much power. You can only mix and match so many things without bad stuff happening and when they offer parts that match the 1439's (OR8789) and (3787)with big horsepower why not just go with them and not have too worry!? I havent built 15million motors or whatever he has but common sense will take a guy a long wayz in the right direction right?? Just sayin...hope i dont strike a nerve! haha:nerd:wnedThere is no 800hp marine cam for a mechanical engine. The 580hp marine C models uses the 0r3787 and as well as the 587hp generator set engines that the 10r1439 cylinder pack comes from.
Have your C model pump built so you can use the actual matching 0r8789(65% more fuel then a 3421) nozzle that comes in those engines.
Use pump cam 4p-0990, this is a pump cam that works in your C housing with your barrels and plungers that will allow you to use your 7FB timing advance and also has timing specs like the 24* pump cam used in the 7FB.
When the cams were changed from the 0R3013 to the 0R3787 this is the information that came out along with it.
Wow! Ive always said his timing specs were wacked like bad! after a point you can feel it hold back and when you loose a bunch of boost from just changing timing specs you know its way too advanced! sorry to hear about this man....thats bull**** when somebody basicallly uses you and your money, motor, and truck to be the test dummy for their careless attempt at re inventing the wheel with a bunch of drempt up theories! :serious:O???? Is that why he put 0R-4943 excivater packs in mine with the 8789s ? Advanced the timing so much it was over spraying the bowls... Not to mention not changing the junk main bearings cause thier fine, plus the billet high volume oil pump from cat, sure looks cast to me 0r 9449 and a Huge 3408 oil cooler that's a factory replacement 0r 5511, 164,000 miles and had to tear it down to the short block...
And seriously, A billet oil pump huh?? I wouldnt even dare guess how much extra that descriptipn cost??!! Man idk how people that do that kinda **** can sleep at night?? I mean ripping somone off is bull**** but not having any pride and putting your name on the line like that would eat me up alive! Jeez theirs times when i will tell people that dont want me to completly clean, paint, and straiten all the hoses and wiring out that ill just include it in the price of the inframe or whatever im doing just because i take pride in what i do that much and to me a motor job isnt complete unless it looks professional.O???? Is that why he put 0R-4943 excivater packs in mine with the 8789s ? Advanced the timing so much it was over spraying the bowls... Not to mention not changing the junk main bearings cause thier fine, plus the billet high volume oil pump from cat, sure looks cast to me 0r 9449 and a Huge 3408 oil cooler that's a factory replacement 0r 5511, 164,000 miles and had to tear it down to the short block...
You would use the barrels and plungers that are in the 8pn pump, keeping the dual scroll barrels will be key in running the 8789s.as always thanks for the info.besides the cam # given what barrels & plungers go with it ?
or will the ones in the pump now do the job?I will have to pull the 7FB down in the next few weeks and check the cam out. If it is junk i will get the 3787 coming for it.I am trying to get all the parts rounded up before i start on the 8PN so i only have it down for a couple weeks.