anyone here running one of these cams? How much Hp can one expect with ported LT1 heads and basic bolt-ons? Is this cam too large for 350ci or would it be better suited for a stroker motor?

 

Its suited to a high rpm motor, and a bigger displacement with it would give a better idle.

But its a good cam, if I had an LT1/4 I would run it instead of hotcam.

 

It seems that the fbody boys know more about modding lt1s since they are less scared of tearing apart their car. The 306 is a good cam. It makes way more power than a hotcam. I had a 306,home ported heads,long tubes,and 4.10s in my 95 z and the car went high 11s on motor. Now as good as the 306 is it is rather a older cam. Comp has a lot of newer cams that idle better and make more power(such as there 230/236 extreme cam. If you want my personal opinion I would get your heads flowed then have a cam custom ground for your heads. It isn't really that much more expensive and the results will be way better suited. If you want to spend a little more have loyde elliot do your heads. He charges around 1700 bucks for his head and cam packages. Thats all new valves,springs,porting,everything. Not everyone knows ,but his cams are custom ground by Joe Overton. Joe Overton doesn't grind cams for all people anymore ,but has that deal worked out with loyde. If you didn't know Joe has the fastest n/a lt1 in the world,and even broke the ls1 record with his lt1 a while back. There are other companies like advanced induction and such also that are really great with lt1s,but Loyde is the better bargain. I have talked to Loyde myself several times and he is very humble,and will talk to you on the phone for as long as it takes with your questions no matter how busy he is. Remember he works alone on all the heads..he is no big corporate business. Not saying you ,but it tickles me that all these vette owners will spend all this money for the best products on their interiors,rims,wax,emblems,blah,blah,bla h,but are are still playing with lt1 performance products that were the best 10 years ago. If you have have any other questions I will be happy to help. I'm sure u will be happy whatever route you take. Now if I could only get my dam 89 c4 to run like my camaro did..

 

thanks for the reply. What kind of power could one expect with the comp cam 230/236 extreme?

 

This is there new extreme EFI cam series. Here is the cam specs. And part number. It will make very good power with the right heads. Power really depends on head flow numbers. Here is the 230/236 cam

PART NO. 08-467-8
01 INTAKE MASTER 3016
02 EXHAUST MASTER 3037
03 ENGINE CS 280XFI HR-13
04 GRIND NUMBER CS 280XFI HR-13
INT EXH
05 HYDRAULIC Y/N YES 4 DUR @.050 230 236
INTAKE EXHAUST 15
LOBE LIFT .3600 .3570
06 VALVE ADJUSTMENT HYD HYD
16 ROCKER RATIO 1.60 1.60
07 MAX GROSS VALVE LIFT .576 .571
08 DUR @ .006 TAPPET LIFT 280 288
17 LOBE SEPARATI 113.0
8 ADVANCE 4
09 VALVE TIMING OPEN CLOSE VALVE SPRINGS 26918
@ .006 10 INT 31 69
11 EXH 81 27 DATE SETUP 10/18/2004
12 THESE SPECS ARE FOR CAM(S) INSTALLED
@ 109.0 INTAKE CENTERLINE

 

thanks

 

My car originally had the 306 and the previous owner put a 305 back in since he was daily driving so much. I don't daily drive my car so I was looking for something more aggressive.

After talking to David at Thunderracing (who I recommend if you are wanting to buy a new cam) he convinced me to go with a custom grind Extreme Energy cam with similar specs as the 306 - I think we went with 230/244 (don't have it in front of me but I think that's right).

Give David a call and he'll help you decide.

 

There's lots of guys on here that aren't in the know and want a proven combo the first time around. Most also don't want the fenders shaking like a pro-stocker, either. I believe that's why most of LT1 owners pick a good, middle of the road setup that's proven, liveable and can usually pass emissions. Running 11's is sweet, but not in a driver. JMO

 

Im running high 11's with the hotcam. My problem with the 306 is trying to pass emissions test. Some of us have to do that. IMHO pretty much everything with a cam is a compromise. More HP = Less Driveability. So YOU have to deside what you want to compromise.
Oh, and mine sure aint no waxer.

 

I ran 11.82@118 with the hotcam and stock LT4 bottom. I think it's a great all around cam for a daily driver with some punch.

 

Wasn't trying to offend anybody with hotcams. It is a good cam,and a proven performer. I think the hotcam sounds awesome too for as little a cam it is. I was simply stating that there are for more cams out now that make more power. The 306 will never pass emissions so I was under the impression emissions was of no concern. I myself ran the 306 in my z and recommend against it simply because of all the newer cams out. Again if your porting your heads man have them flowed. Then have a cam ground for your heads. I don't care if you port them yourself get them flowed. I know your asking how much power will a 306 or 230/236 make,but it depends on your head flow like previously said by CHRISWTX. A 306 in one motor will run totally diffrent in another because of the differing flows of the heads. If you keep the heads stock then your better off with a hotcam or cc305(the hotcam sounds way better since its cut on a 112 but the 305 makes a little more power I think) I don't want to sound like a broken record but if u port the heads get them flowed and have a cam ground. An off the shelf cam will never work as good as a cam ground for the exact headflow of YOUR heads.