ok ive decided to do a cam swap on my car. it has 100k on it with mods in sig. its my DD but i only use it to go to school and work which is all very close so i figure i can get away with more than a hotcam or something like that. however id like to use stock lifters and keep the costs of the project as low as possible. i was thinking about the CC306 or GM847 however i wanna use stock lifters which idk if that would work with these cams and i also dont plan on spinning the motor any higher than 6,200. i would like to use a factory replacement timing chain as well as stock pushrods if possible. i dont wanna cheat anything in the build but i dont wanna buy things that realy arent neccesary. like i said i wont be spinning very high and i usually never redline the car anyways. i was thinking about the CC503, does anyone have exact specs on this cam? i looked a few places but got different numbers. i want a pretty mean sounding idle also. other than the cam, i plan to swap springs and go with roller rockers. i want to keep prices down low and keep the swap under 800 bucks if possible for all the main valvetrain parts. anyone got oppinions on my plan or offer any advice as to what would work well for what i want? i also dont wanna order a custom cam because im really not worried that much about squeezing everything i can outa the car. it will also see a 125 wet shot occasionally.

 

You'd have to spin the cc306 and gm847 higher than you want to get the most out of them. People have had good luck with the xe503 (224/230) and sping it to around where you want to.

 

With the Rpm range your looking to spin the motor in i wouldn't do the 847 or the 306 my 847 peaks @ 6500 but i end up shifting @ 6800, Liked mentioned above your best bet is the 503 the specs on that cam is 224/230 .503/.510 w/1.5 rockers on a 112 Lsa.

As for lifters & pushrods i would at least by new factory replacements so you have a better chance of your setup lasting a decent amount of time.

 

im going with the cc503 also and heres everything else im going to be getting as i have a high mileage car also and its my dd for work and school:

- cc503 cam
- Comp pro mag 1.6rr's, 7/16" NSA w/ gmpp guideplates
- ARP 7/16" studs
- chromeoly pushrods
- stock lifters
- 918 spring set:
+.05" locks, spring locators, springs, & retainers
- LT4 extreme duty timing chain or cloyes double roller if i go electric WP
- New water pump, maybe new opti? No problems with it yet but would hate to tear it down again later...
- 160' thermostat & electric fan switch
- Taylor 8mm wires, ngk tr55 plugs & msd coil...since im going to be putting on my Pacesetter LT headers at the same time - 1" ARP bolts with either Percys "dead-soft" or felpro gaskets for headers.
- Racetronix setup
- fuel filter
- valve seals
- all other gaskets & seals
- Mail order tune

If you going to do it, from what i have heard, about the only stock part your going to want to reuse would be the lifters, thats what im doing anyways and keeping my stock heads so its a little cheaper..

 

well id replace the lifters before i replace the pushrods (as long as i can keep stock length pushrods) so as long as the lifters wont bleed down too fast and the pushrods are all straight, ill keep both of them. i plan on running Self aligning 1.6 roller rockers without guideplates. think this would be safe to 6,000? i really dont like spinning the motor this high anyways but i know it can. at the track i shift around 5,500 or so, and i would send my PCM out for a quick tune. its already been tuned with LT1 edit when i did my headers. i got torque management, egr, air pump, rear o2s and skip shift deleted. also tuned for premium. otherwise stock. think i can run the 918 springs with the 503 cam and everything else i mentioned. i would replace the timing chain with a new factory one just to be safe, but like i said i keep it under 5,600 almost always. i really want the lopey idle and w.e i can get out of it without spinning past 6,000. like i said, dont care much about getting every amount of HP and TQ out of it. just want that badass idle and a little more umphh.

 

The CC306 and GM847 will give you the meanest sounding idles, but u will have to spin em way past 6200. I would look at a CC305 or CC503. Or get Bret Bauer to build you a custom grind.

 

Both the CC306 and GM847 are rev-happy cams. I would definitely consider some of the tamer grinds like the Hotcam, CC305, and CC503. If you stick with one of those grinds you should be okay.

 

okay great guys, thanks for your oppinions. ive heard a few 503 clips and it sounds like a nice little cam with a happy idle. the hotcam sounds nice in some clips but others it doesnt sound mean enough.

lets say i go with the 503. can i do what i was hoping with it? stock lifters, pushrods and timing chain, no guideplates, along with 3/8 1.6 ratio self aligning roller rockers, and the 918 springs? would this be a decent setup? and would there be anything else i would need to go with the valvesprings, or is there a valvespring kit that will include everything, or should i go with a different set of springs? thanks guys

 

Stock lifters would be alright, but I would upgrade the pushrods and timing chain. It would also be a good idea to run NSA rockers and guideplates, although not everyone does.

 

yea im gonna save a lot but running SA rockers and no guideplates because i honestly dont think i need them to pull 6k. i feel fine with the pushrods and timing chain for now so ill stick with them as long as theyre all good. i went all out on everything for the nitrous but i just want a little more bump now.hehe. anyone got a spring package or will i have to mix together some parts from summit and whatnot?

 

Check out the classifieds, you may find someone selling a spring set there. As for the timing chain, if you don't want to upgrade, it still wouldn't be a bad idea to at least replace it with a brand new stock replacement set.

 

Hell if i had time & a place to pull my old motor out i would sell you my whole setup for cheap.. But with this crappy chicago weather it makes it hard to work outdoors nov-march

 

i will definitely be putting a new factory replacement chain on, but nothing more than a new stocker.

and yes this weather really sucks. im fortunate to have a heated garage so i can do anything year round, however lately its been so snowy and slushy that i dont even wanna pull the car into the garage cause it will be soaking wet the whole time im working on it.

 

I agree with the above except for the lifters. The stock lifters are just fine as long as they look good when you pull them out i'd just reuse them. I'd take the extra money for the lifters and put it towards a good timing chain. To me a good timing chain > new lifters.

 

would this be a good basic kit to use with the 503 cam im going with?
http://paceperformance.com/index.asp...D&ProdID=91718

and these rockers are fairly cheap and look like nice peices and are exactly what i need...
http://paceperformance.com/index.asp...&ProdID=178017