Guys,

I'm changing my cam tomorrow to a CC304. I know you guys are gonna think I'm crazy. This cam is a 210/220 on a 114 LSA. It should make power from 1000-5000. I miss having power right off of idle and good gas mileage. I'm hoping that with a blower it will push that upper rpm range to 6000 so I can shift around 6200.

http://store.summitracing.com/partde...8&autoview=sku

 

Your current cam is a baby... you should have power right off idle. You may need to tweak your tune in the low rpm cells.

 

97WS6Pilot I am a small cam guy myself, I am doing a 224/230 on a 112 for my 383 with a Blower. That would be about the same as the 304 with a 355, I say do it. I will only be shifting a 6200 myself, I see no need to spin a Blower motor for a street car when you can just speed up the blower.

 

yup me thinks so to...if not goto a CC502 218/224

 

Current cam is a CC503 224/230 on a 112 LSA RPM 1800-5800. New cam is on a 114 LSA RPM 1000-5000. The 114 LSA and smaller duration should give me what I'm looking for. I have a slight amount of reversion at 1800-2200 at light throttle that nobody else can feel except for me. Timing has been raised and lowered in those areas. Only thing that fixes it is to run open loop and 13:1 AFR and I want to run closed loop.

 

Agreed. I've already spoke with a member on here using the CC304 cam with a P1SC and he says it has real nice street manners and gas mileage. He also said it pulls like crazy up to about 5500 then tapers off. With my M6 it should be a blast on the streets and my car rarely goes to the track. I was going to put a stock LT4 cam in but they are on national backorder.

 

if you want to make big power, you need a more cam and spin the eng....if you have a well built eng why limit your self to 6000rpm...

 

Go with 214/224 565/536 lift. 114 (07-000-8/LT1/3190/3314/HR114) Its a great cam and Rich strongly suggest this cam for blower applications. Its very similar to CC304 but you also should want the lift as high as possible (without pushing the limits of valvetrain) to use the advantage of your heads.

 

with the power you making now driving the car everyday why not who cares if you loose a couple of hp, maybe you wont loose any. You all might think im crazy but my car used to be stick and i drove around a decent amount sometime over 100 miles to the track each way with a 24x/25x on a 110 with 3.23 auto gear with no problems, gets a little stumbly below 1500rpm but as long as you keep it above 1500 no problems whatsoever, but it does not get good gas milage by anymeans.

 

I had forgotten what a pain in the *** it is to change a cam. I checked the old cam and it was installed at a 112 centerline instead of 110. 2 degrees retarded might be the reason it seemed like it wasn't making enough power off idle. I went ahead and put the new cam in at 112 also.

I almost got finished with the install when my company calls and says we need you to come in to work. Hopefully I can finish Friday and get some results.

 

I see you have the 60#, presumably Mototrons. Did you have to alter the injector offsets for those? I requested a custom cam from Cam Motions for my T76. They gave me the following recommendation:
(Using 1.6 rockers)
Duration (intake/exaust) 228/228
Lift (intake/exaust) 563/563
Lobe Center Separation 114
Intake Centerline 110
Comments 355.00 with Cast Gear Core 300.00 for billet core


My criteria was:
80/20 Street/strip daily driver
355 cubes (3.48" x 4.030) 5.7: rod
Ported LT1 heads Using LT4 Valve sizes flowing I/E 275/195
3,650 car
M6
3:55 gears
60# Mototrons
T76 w/MPS Wheel w/14-17 psi
Static Comp Ratio: 8.8:1
Desired HP: 600 RWHP

 

Well if I'm right about this cam it will make about 600 rwtq but be limited to about 525 rwhp. I won't have to spin it so high to make power.

I use the stock injector offsets...

 

Cam swap was a success. I've noticed the cam makes power right off idle all the way to 5500 then tapers off. Cam surge is gone!! Low and midrange power is up. Top end is down slightly.

Mileage has gone from 14 in city to 17 in the city. Mainly because it doesn't take as much throttle in the lower rpms to get the car moving. Highway mileage was unchanged at 24 mpg. CC304 is a good match for my M6 and blower. The smaller cam is much more fun as a street car. I would do it again.

 

Congratulations on a successful cam install. The virtues of a smaller cam are significant if your needs are more street than strip.

 

Congrats and thanks for the feedback! Sounds like a fun ride.