Trick450r

iTrader: (7)

i am in the market for a nice cam for the lt1. I have my eye on the cc306 right now because I want a cam that sounds awsome at idle...but i also want some nice gains, i dont want something that sounds mean but isnt efficient. The cam will be used with 1.6 rrs and stock heads with stock springs, is the cc306 going to beat up on my valve train? the other cam i had my eye on was the xfi 280? what does everyone think?

StealthFormula

iTrader: (35)

You cannot run any cam other than the stock cam on stock valvesprings. Check out the cam sticky at the top of the forum that should be helpful.

1994Z28Lt1

iTrader: (1)

well here you go since i like dinking around on desktopdyno

rpm cam hp/tq CC306/XFI 280/crane 227
2000 115/303---136/356----141/369
2500 161/338---182/382----188/394
3000 204/358---230/403----237/414
3500 263/394---289/433----294/441
4000 314/412---338/444----342/449
4500 363/424---382/446----386/450
5000 400/420---415/435----416/437
5500 423/404---433/414----435/415
6000 430/376---429/376----434/380
6500 426/344---412/333----419/339
7000 407/305---386/290----395/296

for whatever reason desktop dyno really loves the specs on that crane 227 grind for such a small grind it whoops the *** out of the CC306 and XFI 280
but this is just a computer program so yeah....

Green3spd

iTrader: (7)

Crane 227 sounds like a good route... what are the spec to it?

Pro_built7

iTrader: (9)

those seem VERY high.. even for those cams 435hp@6000 for the 227? uhmm sorry i don't think so..

Green3spd

iTrader: (7)

I thought so too... that MUST be full bolt on(including heads/intake,lol) thru a M6 with 20k miles...lol

1994Z28Lt1

iTrader: (1)

like i said in my original post, i stated that it looked like the program really liked the specs of the crane227

i agree the numbers look extremely high, and i inputed the specs Evo EVc Ivo Ivc spec right into the program assuming long tube headers and stock flowing heads

instead of looking at the numbers alone look at the differences between the 3 cams take for example the amount of torque they make at 2000 rpm, you'll see that it looks like the CC306 will be a dog down low compared to the other

but am i no way going to say that i agree with all the numbers i was simply bored and decided to input some numbers into desktop dyno, so take them with a grain of salt

Trick450r

iTrader: (7)

alright well i guess my next question is which valve springs should i use with each of those cams and which rrs would work best, im assuming self aligning will be sufficient? And i know this is going to seem like a newbie question (im much more familiar with 4.6 ford motors and diesels) is their any way i can replace the valve springs without pulling the heads? because if i can avoid pulling the heads that would cut alot of time off the project, i cant have the car down for too long. Ill be taking friday and saterday off along with sunday to work on the car, im assuming that should do it if i get 3 long days in, but i really cant afford to be without the car monday morning as i have school at 7:00 am.

LSWHO

iTrader: (1)

shbox.com will have your answers on install.

I'm going with the crane 10308 kit for springs, myself.

SPEEDYTRANSAM1996

iTrader: (37)

that crane i hear about is a bad motherfu**er ...............good luck

C_Rules

iTrader: (7)

i hear you on that one too. however if we're talking about fwhp with a 15% loss that would translate to about 370 rwhp. not that far fetched for a peak hp number, but at 6000 rpm with stock springs it would probably being faling on its face.

i always thought having a desktop dyno program would be cool just to play around with. 94z28 how much did desktop dyno run you and how fun is it to play around with?

fast

iTrader: (24)

there are far more variables than cam to consider
my cc306 car had great heads (GTP) with titanium retainers, full comp valvetrain, etc

I never noticed any lack of bottom end because the car was at redline in the blink of an eye

Green3spd

iTrader: (7)

I havent heard much about this cam... whats the part #....?

96capricemgr

iTrader: (1)

Desktop dyno is hard to get to output accurate numbers and likes some wacky inputs. That said the Crane 227 is the only one of those three I would ever consider using.

If you have any thoughts about reusing the stock springs you are nowhere near ready for this level of modification. Back to square one and keep doing more reading and get some of these VERY bad ideas out of your head before you act on them and cost yourself a small fortune.

StealthFormula

iTrader: (35)

Crane 104227. Its a pretty nice cam with a strong low and mid range. Works real well for the b-bodies because of its nice torque, it helps them get off the line quicker which is why its called an RV cam. Sounds fairly stock which can either be good or bad thing depending on preference and a nice choice for someone wanting to shift around stock rpm levels. I have some more info on it in my cam sticky at the top of the forum.

Trick450r

iTrader: (7)

they arnt in my head at all...i was looking for input. I was not running my ideas by you guys with the intent of not heading your warnings.

You tell me the 306 is alittle too much, i listen and decide on the 503 instead, you tell me to get some springs i ask what kind. I am more than capable of the install and have read the step by step up and down multiple times. Im asking for guidance, not for someone to tell me about my capabilities, thank you.

StealthFormula

iTrader: (35)

Well I see your interested in the cc503 now. I will also throw out there to check out the Crane 831 which is very similar to the cc503 and you may like as well. For either of those particular cams I would recommend the following; Crane 10308-1 kit, is a nice kit that I would recommend because its a good price and has everything you need. If you want to step up a notch I would recommend the PAC 1218 springs. They are a little better than the Crane's but of course cost more money. The PAC 1218's are the same as the Comp Cams 918's but better because Comp has had some issues with the 918's since they started having some company in Mexico produce them instead of PAC. I personally have the Crane's with my cc503 and they work well but I am switching to PAC's with my new heads. Would have been a little more cost effective if I went with the better springs to begin with. Just my .02

Trick450r

iTrader: (7)

Yeah after listening to some sound clips and looking at some dyno results im pretty dead set on the 503 now, i will deffinatly be doing the comp magnum 1.6 rrs, the crane springs, and a new timing chain, anything else im going to need outside of the obvious (retainers, shims, gaskets etc) And if i have money left over i might as well put a new opti in.

96capricemgr

iTrader: (1)

Thing is almost all off the shelf cams are set on overly wide lobe seperation angles to tame the idle. You can have a lopey idle with MUCH less duration if the cam is spec'd right.

http://www.babcox.com/editorial/ar/eb90252.htm

The cam I am running is a whole lot closer in size to the 503 than the 306.

Green3spd

iTrader: (7)

what kind of #s are people seeing with the crane 227?