Harley-Davidson

Evolution Engines
Unlimited Displacement
Horsepower Gallery

 

 Performance and Technical information on engines for Harley-Davidson motorcycles.

This is a list of verified horsepower figures for a variety of Big Twin Evolution Engines. The list provides information on the maximum horsepower recorded, the type of engine cases, the engine displacement in cubic inches (CID), head type with who did the modifications, type of camshaft, type of carburetor, type exhaust system, owner of the bike, the type of frame the engine was mounted in and the source of the data. Data sources used in building this list include Cycle-Rama, AMI, and various magazines. All horsepower figures listed here were confirmed on a dynamometer.

To have your bike listed here, send a copy of your dyno sheet data along with the other information listed in the Horsepower Gallery to us at the V-Twin Café.
 

Max.
HP
Click for Dyno Sheet

 Max. Torque

Engine Case

CID

Cylinder Heads

 Compression Ratio

Camshaft

Carburetor

Exhaust System

Owner

Bike

Dyno Sheet From
250   Delkron 140 Custom Billet, Walters Technologies   Andrew/Walters
.900+		 Walters Technology Ellipses custom drag pipes Rob Korn 96 ProStock Drag Bike Dyno Run December 1997 Thunder Alley
179 200 S&S 113 S&S 9.5:1 S&S .600" S&S Super G Nitrous Oxide V&H Short Shots Andy Millet Ultra Softail Calmes Motor Sports
170   Delkron 4-cam 120 STD
General Engineering		   Red Shift S&S Super D Khrome Werks
2 Step Drag		 Jim Preisler Kenny Boyce Pro Street Khrome Werks R&D
163 175 Turbo Connection HD 80 HD
by owner		   V-Thunder 3010 40mm-CV with HO AeroCharger AeroCharger Jim Meador 97 FLH  Turbo Connection
158 147 STD 120 STD CycleRama 11:1 Cyclerama S&S SuperD Sampson Big Guns Steve Moore 95 FXDWG CycleRama
Pinellas Park, FL
155   Delkron 105 Sam's Performance Specialties   Crane Two-Mikuni HSR-45 4 Step Drag Pipes Marty Aanstoos 84 FXRT March 1998 Quick Throttle
147 155 S&S 113 S&S Hawaya Racing 11:1 S&S .631" Dual Edlebrock 38mm
Nitrous Oxide		 Samson
2 1/4" Drag		 Chad Rupple 99 Ultra Calmes Motorsport
135 137   108 STD           85 FLHT Southside Johnny Glendale, AZ
130   Merch 105 Branch STD   Kownacki .611" Mikuni HSR-42 Cycle Shack Slip Ons John Kownacki 1994 Dyna May 1998 Quick Throttle
130   Delkron 104 Branch   Andrews EV-72 Mikuni HSR-45
Nitrous Oxide		 Hooker 2-2 Dave Spangler 1990 FXR May 1998 Quick Throttle
128 129 Turbo Connection HD 80 HD   Crane 300-B SE 44mm-CV with AeroCharger AeroCharger Jim Meador 97 FLH  Greg Coen Motor
123 143 Merch
BC Gerolomy		 120 Merch   Andrews EV-72 Mikuni HSR-45 RB Racing 2-1 Dewey Jelen 98 Custom American Motorcycle Farmington, NM
123 127 S&S
Greg Coen		 113   10.5:1 S&S 580 S&S Super G Hooker 2-1 Greg Coen Motor Company FXR Greg Coen Motor Company
119 124 S&S 113 S&S Hawaya Racing 11:1 S&S .631" Dual Edlebrock 38mm Samson
2 1/4" Drag		 Chad Rupple 99 Ultra Calmes Motorsport
117   S&S 107 S&S   S&S .600" Walters PROBACK HSR-45 V&H ProPipe Jerry Netkin 98 FXD White Bros. Dyno
116 115 STD 97 Screamin Eagle CycleRama 11.0:1 Crane HEV-0042 Mikuni HSR-45 SuperTrapp 2-1 no baffles Steve Mullen 94 FXDL CycleRama
Pinellas Park, FL
113 113 STD 97 Screamin Eagle CycleRama 11.0:1 Crane HEV-0042 Mikuni HSR-45 Khrome Werks AR100 Steve Mullen 94 FXDL CycleRama
Pinellas Park, FL
111 111 STD 97 Screamin Eagle CycleRama 11.0:1 Crane HEV-0042 Mikuni HSR-45 SuperTrapp 2-1
22 disk		 Steve Mullen 94 FXDL CycleRama
Pinellas Park, FL
114 114 S&S 113 S&S   S&S 600 S&S Super G RB Racing 2-1 Kevin Sickles 99 Custom Build MSP Racing
Columbus, OH
110 100 S&S 96 STD
John Sachs		 10.5:1 Crane 310 S&S White Bros. Stogie 92 FXR Gilardi's
Ft. Lauderdale, FL
109 12 S&S 113 S&S 9.5:1 S&S .600" S&S Super G V&H Short Shots Andy Millet Ultra Softail Calmes Motor Sports
104   S&S 96 S&S   Andrews EV-59 Mikuni HSR-45 AR 2" Drag Robert Dehmke 96 Bad Boy Valley Racing
104 101 STD 97 Screamin Eagle CycleRama 11.0:1 CycleRama .617" Mikuni HSR-42 SuperTrapp 2-1 22 disk Steve Mullen 94 FXDL Performance Specialists
Clearwater, FL
101   S&S 103 S&S   Powerhouse 595E S&S Super G MAC George Boyd 1996 FXST May 1998 Quick Throttle
97 107 STD 97 HD Stock 10:1 Screaming Eagle SE-57 MAD EFI SuperTrapp 2-1 Steve Mullen 94 FXDL CycleRama
Pinellas Park, FL
97   Delkron 104 Branch   Andrews EV-72 Mikuni HSR-45 Hooker 2-2 Dave Spangler 1990 FXR May 1998 Quick Throttle