‘71 Pro-Touring Chevelle Engine Specifications & Other Data:
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ZZ 540 Technical Information |
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Horsepower |
TBD during break-in dyno runs,
AC Performance, (Best estimate is between 675-725 HP) |
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Torque |
TBD during break-in dyno runs (Best estimate is over 600 ft. lbs. thru all of the powerband RPM range) |
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Compression
Ratio |
9.32:1 |
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Block |
GMPP Gen 6 Big Block Chevy, P/N: 10237292 Cast iron
- four bolt main caps |
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Crankshaft |
Callie’s RaceMaster 4340 Non-Twist 4.250” stroke, internal
balance |
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Connecting Rods |
Eagle 3D H-Beam, 4340 with ARP 7/16" bolts |
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Crankshaft Studs Pistons |
ARP Main Stud Kit w/washers SRP Forged Aluminum, Flat Top design, single -3CC eyebrow
notch |
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Piston Rings |
Sealed Power, Moly design |
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Camshaft |
Comp Cams
Hydraulic Roller SEE CAM CARD |
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Timing
Chain |
Cloyes Hex-Adjust Single roller |
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Cylinder Heads |
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Intake Valves |
2.300" Stainless Steel |
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Exhaust Valves |
1.88" Stainless Steel |
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Valve Springs |
AFR with matched spring pressures for hydraulic
roller camshaft |
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Rocker Arms |
Comp Cams full roller design, Stainless Steel, Std
1.7:1 ratio |
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Intake
Manifold |
Aluminum
Holley – Fuel Injectors pre-plumbed |
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Induction System |
Holley Commander 950 MPFI Kit w/42 lb./hr. injectors
& 1,000 cfm billet throttle body |
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Distributor |
MSD Pro Billet, Electronically controlled by Holley
Commander 950 ECU |
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Starter |
Gear
Reduction, Mini Starter design by Summit Racing |
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Water
Pump |
Stewart
Aluminum Pump, included with Vintage Air’s FrontRunner
Kit |
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Valve Lash |
Hydraulic Camshaft, on base circle of lobe remove play
& add ½ turn of pre-load |
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Spark
Plugs |
AFR-recommended
Autolite AR3932, .750” reach, 5/8” hex drive, 14MM
threads |
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Fuel |
93 octane
pump gas |
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Ignition
Timing |
8º BTDC @
800 RPM |
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Technical
Notes: |
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