92heritageRS

I have a L03 305 tbi T-5 and just purchased a great speed density plenum, fuel rail, and 7730 ecm from Ebay. I plan on buying an edelbrock base and 52mm throttle body, slp runners, AFR 195cc heads, 255 lph fuel pump. The car already has 1-3/4 slp headers, 3" catco cat and 3" flowmaster cat-back. My question is on the comp cams 306 computer cam. My buddy got it for a project and dosn't need it. Will it work for me or is it way over my head? I just want a nice lumpy idle and some go for now till I can get a ZZ4 350 short block. This is how I plan on starting my project what do you guys think? Will it be h*ll to tune? It should be a fun ride if it works! I need guidance. What am I over looking? To see cam specs summitracing.com part# CCA-08-306-8

RS Chris

Are you putting that in your 305, because if you are I believe thats way, way to much cam.

92heritageRS

I ultimatly plan on putting it in the ZZ4. But if it will work in my 305 for now I will try it. Unless I could not tune it to run at all. I know it is not the right cam for a 305 but it will atleast sound good, (if it will run at all) until I save for the ZZ4 short block (about 2-3 months). This is my question. Will it run at all with a proper custom chip or will I be wasting my time trying?

TunedPort 335

I highly doubt that 305 will be remotely driveable with a CC306 stuck in there. Now on a modded 350 its a different story. Alot of the LT1 guys run that cam and are making some huge power. You could probably find alot of info on that at www.camaroz28.com and go to the LT1 forums

But i also highly doubt that cam will make any good useable power, even with your modded TPI setup. Dont get a cam cause it lumps good. Match it up with your heads, tranny, gears, and weight of the car. And most importantely what you want to do with the car.

92heritageRS

Thanx you are right about Z28.com its alot of guys running this cam in LT1s but non in 3rd gens. They are saying their cars are pulling to like 6900rpms with 380rwhp with this cam. I am going to put the cam in with my ZZ4 AFR head motor and see what happens. I do have 4.10 gears to go in the car and I am gonna port the **** out of the tpi base and plenum. I may opt for the 58mm holly/bbk throttle body due to the rpms. I am also thinking LS1 injectors.

OK the set up: ZZ4 short block
AFR CNC ported 195 heads
edelbrock tpi base ported and gasket matched
SLP runners
Stock plenum ported! ported! ported!
holley 58mm TB
LS1 or SVO injectors
comp cams 306 .510/.540 lift
290/307 duration
112 lobe sep
4.10 rear TA girdle
G-force T-5 dog ring upgrade


What do you think???????

RS Chris

The downside to that cam is you really have to ring out the motor to make power. So even with a highly ported TPI setup I think this cam is not the best choice, even if you can get it cheap.

HiTech5

iTrader: (4)

Not only is the 306 too much cam for your motor, the AFR 195's are too big as well. The problem with the 195's are that they more than likely have 2.02" / 1.60" valves and will not work with the 3.875" bore of the 305.

I personally do not like the 306 cam. It has far too much exhaust duration and is not suited for cylinder heads like AFR's that have an int/exh ratio above 70%.

www.geocities.com/dzperf

DuronClocker

iTrader: (1)

Well, taht would go on his 350 he's saying. That cam will in no way be streetable on a 305. I had a 222/232 cam laying here in my room for a while before I decided it was too big for my 305 project. I ended up going with the CC304 cam (210/220@.050").

Keep in mind that I am not going to have the long tube runner setup, nor stock heads, or even stock compression ratio.

Your TPI setup will never crank to 6900RPM. On my stock motor with stock TPI, if I hold the shift to 5000RPM vs. the stock 4700RPM shiftpoint, I get slower. That means its losing power up there. Granted, yours will be ported, but don't expect it to pull to 7000RPM, and on the 350 motor, don't expect anything past 5200RPM or so, so don't get a cam that will make power over that..

anesthes

iTrader: (12)

Your confused.

-- Joe

HiTech5

iTrader: (4)

Joe - Tell me how I'm confused? It's a well known fact that a split duration cam was designed to help out the exhaust side of a cylinder head. Cylinder heads like AFR's that have an intake to exhaust ratio above 70% tend to favor single pattern cams.

The Comp 306 has a very long exhaust duration I would never use with heads like AFR's. Overscavenging may occur!

anesthes

iTrader: (12)

Generally speaking, you are correct. But not in relation to this cam, IMO.

Now what he *would* have issues with, his his base compression ratio. I think the split pattern might give up a little cylinder pressure and he may infact go slower. If I recall, those motors had super low compression ratios (in the 8s).

The 306 is a great cam, even on a decent head like the AFR. The long exhaust duration, high exhaust lift, and 13 degrees of overlap is a peachy combination especially for folks running "street" exhaust. Regardless of the heads exhaust flow capability.

I spent a long time researching and modeling it, then bought it

Now, in a 350 block with the AFRs. Say he mills his heads down, and gets a target of about 10:1 C/R. I think that cam will SCREAM!

-- Joe

HiTech5

iTrader: (4)

I agree that a cam like the 306 works great with your combination because of the blower. In my experience, I've found more power by using a single pattern grind when coupled with heads that have a good exhaust port.

www.geocities.com/dzperf

92heritageRS

blower is an option also it's a paxton novi 2000 on ebay now. thanx for the input.

ThirdGenFire

I made a good chice in cams in my opinion. The Crane Compucam is a great bargin from what I have experianced.
That cam will kill all usable power you have. Use it for a 350+ not the 305.