Got my Cam today..

[gectek]

you mean just the gearset is machined for timing the cam, or just fitment on the cam? and the cover is machined also, so if you could get the exact prob areas, could tce make a billet cover?

[SappySE107]

If you move the timing chain cover out, you have to shim the accessories, but the AC mounts on the other side so that is a problem. We haven't come up with a solution yet but I will work on it more when I get some more money. That timing set wasn't cheap

The crank gear is probably fucked actually, cause it was reamed out to fit a crank that had a bad keyway (oops). The cam gear is modified to fit the gen 3 cam and dowel pin. The crank gear is how you adjust timing.

I gotta price that crank gear alone now.

[SappySE107]

oh btw, the cams come stock with some kind of wax coating on them:P They are the same way when I get them back from being reground.

[gectek]

so does it look like the 3500 could make better use of the double roller chain, and also if you were to make a spacer bracket for the cover you would have to move the acc out a little but it would require less machine work? am i understanding you right on that. so if i could get someone to maybe weld in a spacer on the cover would that be doable then, or could u get a pic and maybe circle the places that need to be clearanced...

[SappySE107]

3500 would be a little closer to working actually. It has a dampener on the outside of the cover that you could figure as being open space. That might work. The cam position sensor (24x) needs to be kept the same for the ring location.

How about I just set it up and take some pics? I think that will give you a better understanding for the situation. Ill create a new thread. First, I have to flow this exhaust port and see whats up:P

[Superdave]

here is the base circle difference...

Stock 2002 3400 cam:



My Cam



So with that difference i need to add about .07 to each pushrod for propper preload.

[rickykline]

is .07 REALLY enough of a difference to mess with it?

[sprucegagt]

Given your advertised duration numbers, I would never trust those measurements!

[SappySE107]

.070 is a lot! Probably not really how much you need to take off though. Gotta measure in the engine and see what you need. I have the tools to make my own pushrods because even .010 is too much for me.

[Superdave]

Given your advertised duration numbers, I would never trust those measurements!

I checked all the lobes 2x each, the numbers varied slightly but that's close enough to an average. I talked to Delta Cams about doing it this way and he said that if anything it's probably more accurate. This way there is no preload to worry about and no other factors.. and it's alot easier

the lifters will take up any extra slack i'm guessing...


I'll be pulling the stock 3500 cam out tonight to get measurements off of it as well. the stock 3400 one in the picture was damaged a little last year when i lost oil pressure...

[gectek]

but the prob is you will still lose that lift anyway and some of the geometry will be off, and yah they will take up the extra slack, but that extra slack is lost lift

[SappySE107]

My base lobes are smaller and I need .030 longer pushrods. Basically I have no preload.

I speced my cam today and its not quite as advertised. The numbers repeat on the other lobes though which is good. Its supposed to be 109.5 ICL but its 113.5 ICL installed in my motor. I have to set it to 108 so hopefully brad can hook me up with the ability to do that.

[gectek]

wow, thats not so good sounding, from what you needed and what you got

[SappySE107]

Actually with the ability to change the ICL with a cam gear, its all good.

[gectek]

so that takes more machining for you...