Unlimited EVO

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
171		S&S	124	Baisley		Red Shift	S&S Super D	Custom Exhaust	Paul Morris	90 FXR	Joker Machine
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
133	145	S&S	124	S&S John Sachs		S&S 640	S&S Super G	V&H Pro-Pipe	John Sachs	91 FLSTF	HD South Performance Center
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
122	115	STD	97	Screamin Eagle CycleRama	11.0:1	CycleRama	MAD-EFI	Modified Khrome Werks AR100	Steve Mullen	94 FXDL	CycleRama Pinellas Park, FL
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