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Combo 85.
Combo 85 comes from pages 25-28 of the October 1996 issue of Chevy High Performance.
Combo 85 uses a 357 cu. in. engine from Powerhouse. Rebuilt GM heads and an aggressive Elgin cam help to produce 360 HP and 394 ft-lbs of torque. |
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Displacement: |
357 cu. in. |
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Carburetor: |
Holley 600 |
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Heads: |
GM, with 1.94/1.50 in. valves, 76 cc combustion chambers, and a 3-angle valve job. |
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Intake: |
Edelbrock Performer |
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Camshaft: |
Elgin hydraulic, with 0.488 in. of lift |
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Rockers: |
Elgin |
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Headers: |
1 7/8 in. |
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Pistons: |
Powerhouse |
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Rods: |
stock |
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Crank: |
cast |
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Distributor: |
HEI with MSD |
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Timing: |
36° |
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Comp. Ratio: |
9.7:1 |
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MAX HP: |
360 @ 5000 |
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MAX Torque: |
394 @ 4500 |
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Combo 86.
Combo 86 comes from page 141 of the October 1996 issue of Chevy High Performance.
This combo is a giveaway engine from Summit. The Trick Flow Twisted Wedge heads and moderate camshaft produce 363 HP and 400 ft-lbs of torque. |
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Displacement: |
350 cu. in. |
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Carburetor: |
Holley 650 double pumper |
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Heads: |
Trick Flow Twisted Wedge, with 2.02/1.60 in. valves |
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Intake: |
Edelbrock Performer RPM |
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Camshaft: |
Summit hydraulic, with 272° of duration and 0.454 in. of lift. |
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Pistons: |
TRW forged |
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Rods: |
stock |
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Crank: |
Engine Shop |
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Distributor: |
Accel Blueprint HEI with an Accel HEI Supercoil |
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Comp. Ratio: |
streetable |
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MAX HP: |
363 @ 5500 |
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MAX Torque: |
400 @ 4750 |
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Combo 87.
Combo 87 comes from pages 82-89 of the September 1998 issue of Super Chevy.
A 355 from the 70's is freshened by Trick Flow heads, a Lunati roller cam, and a 750 Holley to make 147 extra HP. The roller cam has a little more lift than the rest of the combos on this site, with 0.661 in. of valve lift. Although very much on the big side, this combination can prove to be a very streetable engine. |
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Displacement: |
355 cu. in. |
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Carburetor: |
Holley 750 |
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Heads: |
Trick Flow Twisted Wedge |
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Intake: |
Edelbrock Victor Jr. |
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Camshaft: |
Lunati mechanical street roller, with 294° of duration and 0.620 in. of lift.(Corrected valve lift with 1.6:1 rocker arms is a lofty 0.661 in.) |
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Rockers: |
Summit roller, 1.6:1 |
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Pistons: |
forged |
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Rods: |
forged |
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Crank: |
steel |
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Timing: |
35° |
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Comp. Ratio: |
10.0:1 |
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MAX HP: |
455 @ 6100 |
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MAX Torque: |
435 @ 5000 |
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Combo 88.
Combos 88-91 come from pages 42-46 of the March 2000 issue of Popular Hot Rodding. A GM ZZ4 crate engine is tested with the crate L98 aluminum Corvette heads, L31 iron Vortec heads, and GM "Fast Burn" aluminum heads. Two intakes and two camshafts are used in the four combinations.
Combo 88 is the ZZ4 crate motor in shipped form with the Corvette heads. With all of the new GM components and a Demon 750 carb, this combination makes 356 HP and 408 ft-lbs of torque. |
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Displacement: |
350 cu. in. |
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Carburetor: |
Demon 750 |
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Heads: |
GM L98 Corvette aluminum, with 1.94/1.50 in. valves and angled plugs |
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Intake: |
GM aluminum Eliminator dual-plane, PN 12464340 |
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Camshaft: |
GM steel roller, with 0.474/0.510 in. of lift. |
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Rockers: |
GM stamped steel, 1.5:1 |
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Exhaust: |
Hooker headers and Flowmaster 3-chamber mufflers |
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Pistons: |
GM |
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Rods: |
GM forged |
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Crank: |
GM |
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Distributor: |
HEI |
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Timing: |
35° |
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Comp. Ratio: |
10.0:1 |
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MAX HP: |
356 @ 5500 |
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MAX Torque: |
408 @ 3800 |
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