|
Combo 93.
Combo 93 comes from pages 82-85 of the August 2001 issue of Car Craft.
Combo 93 is a GM ZZ4 350 cu. in. engine that has a mechanical roller cam and AFR 195 heads. This potent combo puts out 523 HP and 454 ft-lbs of torque. Awesome for the street. |
|
|
Displacement: |
350 cu. in. |
|
Carburetor: |
Speed Demon 850, with a 1 in. open spacer |
|
Heads: |
Air Flow Research 195, with 2.02/1.60 in. valves. |
|
Intake: |
Edelbrock Victor Jr. |
|
Camshaft: |
Comp Cams mechanical roller, with 0.578/0.584 in. of lift (with 1.52:1 rockers) and 242°/248° of duration @ 0.050 in. of lift. |
|
Rockers: |
Comp Cams Pro Magnum roller, 1.52:1 |
|
Exhaust: |
1 3/4 in. headers with 3 in. Flowmasters |
|
Pistons: |
GM high-silicon aluminum |
|
Rods: |
stock |
|
Crank: |
GM forged |
|
Distributor: |
GM HEI |
|
Timing: |
35° |
|
Comp. Ratio: |
9.97:1 |
|
MAX HP: |
523 @ 6600 |
|
MAX Torque: |
454 @ 5200 |
|
|
Combo 94.
Combos 94-97 come from pages 40-46 of the April 1998 issue of Super Chevy Magazine. They all use the same ZZ4 crate motor with AFR 190 heads. Hydraulic cams are varied from an economical grind up to a cam with more than 0.500 in. of lift. When compared to the 523 horse build-up above, these 4 combos have a smaller carb, a lower-RPM intake, and a smaller cam.
Combo 94 has a cam with only 0.431 in. of lift and 252° of duration (206° @ 0.050 in. of lift). This build only produces 348 HP and 398 ft-lbs of torque. |
|
|
Displacement: |
350 cu. in. |
|
Carburetor: |
Holley 750 double pumper |
|
Heads: |
Air Flow Research 190, with 2.02/1.60 in. valves |
|
Intake: |
Edelbrock Performer RPM |
|
Camshaft: |
Comp Cams High Energy hydraulic, with 252° of duration, 206° of duration @ 0.050 in. of lift, and 0.425 in. of lift (Corrected valve lift with 1.52:1 rockers is 0.431 in.). |
|
Rockers: |
Comp Cams Pro Magnum roller, 1.52:1 |
|
Exhaust: |
1 3/4 in. Hooker headers with 3 in. Flowmasters |
|
Pistons: |
GM high-silicon aluminum |
|
Rods: |
stock |
|
Crank: |
GM forged |
|
Ignition: |
Mallory distributor with an MSD 6AL box |
|
Timing: |
36° |
|
Comp. Ratio: |
9.5:1 |
|
MAX HP: |
348 @ 5000 |
|
MAX Torque: |
398 @ 3800 |
|
|
Combo 95.
Combo 95 improves upon the former build by using a moderate High Energy cam with 0.460 in. of lift and 268° of duration (218° @ 0.050 in. of lift). The result is 380 horses and 402 ft-lbs of torque. |
|
|
Displacement: |
350 cu. in. |
|
Carburetor: |
Holley 750 double pumper |
|
Heads: |
Air Flow Research 190, with 2.02/1.60 in. valves |
|
Intake: |
Edelbrock Performer RPM |
|
Camshaft: |
Comp Cams High Energy hydraulic, with 268° of duration, 218° of duration @ 0.050 in. of lift, and 0.454 in. of lift (Corrected valve lift with 1.52:1 rockers is 0.460 in.). |
|
Rockers: |
Comp Cams Pro Magnum roller, 1.52:1 |
|
Exhaust: |
1 3/4 in. Hooker headers with 3 in. Flowmasters |
|
Pistons: |
GM high-silicon aluminum |
|
Rods: |
stock |
|
Crank: |
GM forged |
|
Ignition: |
Mallory distributor with an MSD 6AL box |
|
Timing: |
36° |
|
Comp. Ratio: |
9.5:1 |
|
MAX HP: |
380 @ 5400 |
|
MAX Torque: |
402 @ 4100 |
|
|
Combo 96.
Combo 96 uses a Comp Cams Magnum cam with 0.486 in. of lift and 280° of duration (230° @ 0.050 in. of lift). A respectable 404 HP and 403 ft-lbs of torque are made. |
|
|
Displacement: |
350 cu. in. |
|
Carburetor: |
Holley 750 double pumper |
|
Heads: |
Air Flow Research 190, with 2.02/1.60 in. valves |
|
Intake: |
Edelbrock Performer RPM |
|
Camshaft: |
Comp Cams Magnum hydraulic, with 280° of duration, 230° of duration @ 0.050 in. of lift, and 0.480 in. of lift (Corrected valve lift with 1.52:1 rockers is 0.486 in.). |
|
Rockers: |
Comp Cams Pro Magnum roller, 1.52:1 |
|
Exhaust: |
1 3/4 in. Hooker headers with 3 in. Flowmasters |
|
Pistons: |
GM high-silicon aluminum |
|
Rods: |
stock |
|
Crank: |
GM forged |
|
Ignition: |
Mallory distributor with an MSD 6AL box |
|
Timing: |
36° |
|
Comp. Ratio: |
9.5:1 |
|
MAX HP: |
404 @ 5600 |
|
MAX Torque: |
403 @ 4400 |
|
