I havent posted on here in awhile, but I'm still around. I am considering a cam change this winter, and I was curious if anyone had any input. The way it sits, my car put 357 HP to the wheels, and ran a best of 12.18 @ 110.86. My motor currently consists of this:

89 355
10.2 to 1
Edelbrock E-Tec 200 heads with Comp 987 springs
Comp XR294-HR cam
Edelbrock Performer RPM air gap intake
Mighty Demon 750 carb with 3 inch K&N and X-stream lid
Crane Gold 1.5 roller rockers
6 inch rods
Full MSD ignition- 6AL, pro-billet, Blaster 3
1 3/4 Hooker Super Comp headers
3 into 2.5 inch exhaust with Dr.Gas X-pipe, and 40 series Flowmasters
Built 2004-R tranny with 3200 Vigilante lockup converter
4.10 posi 8.5 rear

I know this sounds far fetched, but I would like a little tamer idle, with more bottom end W/O sacraficing much top. One other noteworthy piece of info is that the motor only cranks 165 PSI with a relatively high static C/R, but I think that can be attributed to the large duration of the cam. I'm considering going to a solid roller cam, but I'm open for suggestions on that, or my combo as a whole. Any input would be greatly appreciated. Thank you.

 

A solid roller would certainly permit even more aggressive ramps than the hydraulic roller does. Gotta run the valves from time to time but that's not really too tough to do on a Monte (judging by my expereince with my very similar G-body Malibu). Of course, it's noisier, but you'll never hear it over a loud exhaust.

I think you could trim about 10-15* off the duration, switch to a solid roller, and give up almost nothing on the top end. Might lose marginally at peak HP but the torque curve should be considerably fatter all the way up, basically getting you to the other end of the track just as quickly. You current combo is putting peak HP out at a rather lofty 6100 RPMs. In similar situations I have found that if you trade some HP for torque down low you could bring that peak HP down about 500 RPMs and STILL get to the other end of the track just as quickly, thanks to increased torque in the low-mid RPM range.

 

If you want more torque, better idle, and close to if not more horsepower then go with my cam (CC XR276HR-12). It will peak at 5,800 rpms' in your application. In my opinion, your cam is too big for your heads. Too much overlap will hurt performance (bigger isn't always better).

Comp Cams XR276HR-12 / part # 8-503-8 (I think)

Specs with 1.5 rockers

.503/.510 lift
224/230 @ .050
112 LSA
108 ICA

Lift with 1.6 rockers is .537/.544

It's an awesome cam! Besides, this way you can still stay hyd. roller and not have to change lifters. Just a thought!

 

Hmm, the 276 you say??
TTT, any other opinions?

 

you could try the hr-302 part number 109651. a few other possiblities, but that's about the next closest. the lingenfelter 74211 would also be a possiblility with a rocker ratio change.