Finally ordered my stick

[robinsonwr]

Just order my stick for the 512 build. Was going to use Comp Cam XR286HR but ordered custom Comp Cam hydraulic roller that specs 230/236 @ .050, advertised 281/286 with 622/625 lift w/1.6 rockers. I want a tame sounding factory appearing beast. Should be good with combination below:
950 HP holley
Stealth heads
Weiand Action Plus #8009 intake
Crane 1.6 rockers
10.5:1-11:1 compression
3000 stall
3:23 geared 8.75 w/sure grip
What do you think about my street combo? Combination should pull good to about 6K. I cannot wait to get it assembled and in my 66 Sat.

 

[robinsonwr]

Guys this is the numbers from the card:
SPEC CARD
PART #: 23-000-9 ENGINE: CHRY 383-440
GRIND #: CRB3 3194 /3196 HR111.0
VALVE ADJUSTMENT HYD HYD
GROSS VALVE LIFT .622 .625
DURATION @ .006
TAPPET LIFT 281 287
VALVE TIMING OPEN CLOSE
@ .050 INT 6 44
EXH 51 5
SPECS FOR CAM INST. @ 109.0 CENTERLINE
INT EXH
DURATION @ .050 230.00 236.00
LOBE LIFT .389 .391
LOBE SEPARATION 111.0 FIRING ORDER STD
ROCKER ARM RATIO 1.60 1.60

 

[ykf7b0]

I did not know you could get that much lift with so little duration @ .050.

 

[moparpoor]

With a roller cam no problems,then add in the larger ratio rockers.

 

[robinsonwr]

The lift you see is with 1.6 rockers.

 

[robinsonwr]

Guys this is the numbers from the card:
SPEC CARD
PART #: 23-000-9 ENGINE: CHRY 383-440
GRIND #: CRB3 3194 /3196 HR111.0
VALVE ADJUSTMENT HYD HYD
GROSS VALVE LIFT .622 .625
DURATION @ .006
TAPPET LIFT 281 287
VALVE TIMING OPEN CLOSE
@ .050 INT 6 44
EXH 51 5
SPECS FOR CAM INST. @ 109.0 CENTERLINE
INT EXH
DURATION @ .050 230.00 236.00
LOBE LIFT .389 .391
LOBE SEPARATION 111.0 FIRING ORDER STD
ROCKER ARM RATIO 1.60 1.60

Anybody out there running a short duration high lift cam like this on the street? How do you like it? I was told it will not be hard on valve train components. I think the large cube engine with the streetable 3:23 gear this thing will be a beast up to 6000rpm's. Straightline line performance will suffer because of gear and converter(2800-3200)not being optimal. I think it will be a blast to drive though.

 

[451Mopar]

Just order my stick for the 512 build. Was going to use Comp Cam XR286HR but ordered custom Comp Cam hydraulic roller that specs 230/236 @ .050, advertised 281/286 with 622/625 lift w/1.6 rockers. I want a tame sounding factory appearing beast. Should be good with combination below:
950 HP holley
Stealth heads
Weiand Action Plus #8009 intake
Crane 1.6 rockers
10.5:1-11:1 compression
3000 stall
3:23 geared 8.75 w/sure grip
What do you think about my street combo? Combination should pull good to about 6K. I cannot wait to get it assembled and in my 66 Sat.

My 512 combination is almost the same. XR286HR-10 cam but using 1.7:1 rockers on the stealth head s for 0.617"/0.614" lift. What valve springs are you using? I used Isky 8005A springs.
Mines around 10.3:1 compression. RPM intake and 770 ultra street avenger carb. Not like I'm going to be racing the convertible at the track.

 

[robinsonwr]

The springs are Comp Cams 929-16 springs with 741-16 retainers. What kind of power do you think it is making? The XR286HR has a little more duration but with those 1.7 rockers the lift is pretty close. Great minds think alike.

 

[451Mopar]

The springs are Comp Cams 929-16 springs with 741-16 retainers. What kind of power do you think it is making? The XR286HR has a little more duration but with those 1.7 rockers the lift is pretty close. Great minds think alike.

Those springs are a bit stiffer than the ones I'm using.
The engine is still on the engine stand. I plan to chassis dyno it after it is installed. As for a power estimate, I put all the data into the Dynomation 5 Engine simulation program and it is predicting 562HP @ 4,800 RPM, and 646 ft/lbs @ 4,200 RPM (at sea level). I know I'll only see a fraction of that at my altitude. At a mile high (5280 ft) power is only 455@4,800, and 524 ft/lbs @ 4,200 RPM.
The carb seems to be limiting power. Plugging in a larger 1,000 cfm carb on the same sea-level combination, the sim predicts 597HP@5,800 RPM, and 666ft/lbs @ 4,200 RPM. I really intend to put fuel injection on this when I have the funds, but for now the RPM intake and 770 cfm carb were chosen because I can use them on a 440 for a different project later on.

 

[robinsonwr]

I really like those numbers. The best part about those numbers is the torque, wow. My little b-body will definately be moving out with those numbers. I can just see it now, light blue metallic 66' Satellite with 14" wheels and hubcaps just got knee deep in my A$$ on the BLVD. Sounds like fun. All my friends think my car is heavy but by Allpar the 66-67 cars weight around 3400lbs dry. Thank you so much for that information it makes my day.

 

[robinsonwr]

Those springs are a bit stiffer than the ones I'm using.
The engine is still on the engine stand. I plan to chassis dyno it after it is installed. As for a power estimate, I put all the data into the Dynomation 5 Engine simulation program and it is predicting 562HP @ 4,800 RPM, and 646 ft/lbs @ 4,200 RPM (at sea level). I know I'll only see a fraction of that at my altitude. At a mile high (5280 ft) power is only 455@4,800, and 524 ft/lbs @ 4,200 RPM.
The carb seems to be limiting power. Plugging in a larger 1,000 cfm carb on the same sea-level combination, the sim predicts 597HP@5,800 RPM, and 666ft/lbs @ 4,200 RPM. I really intend to put fuel injection on this when I have the funds, but for now the RPM intake and 770 cfm carb were chosen because I can use them on a 440 for a different project later on.

I called Comp Cams to find out about a custom stick and talked with William Hood. He is the one that selected those springs with the perimeters of the Stealth heads in mind. The install heigth was the contributing factor I do believe. PM me for his direct number.

 

[451Mopar]

The springs Comp recommend for my car are the 925-16 with only 111# on the seat, and a rate of 395#/in. The Isky 8005A is just a hair stiffer with 135# on the seat and a rate of 400#/in. This is the first time I have used a hydraulic roller cam, so I guess I'll have to see how it runs. Good thing this is a low RPM torque engine.
Are you going to dyno your engine?
My first car was a '67 Coronet with a 318, and it was pretty light. The '71 Charger weighs over 3,800 empty and that is with the aluminum heads, intake, and after removing the A/C.