Twin-Cam 88

Harley-Davidson

Twin Cam 88 and 95 CID engines
Horsepower Gallery

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

This is a list of verified horsepower figures for a variety of the Twin Cam 88 and 95 CID 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 DynoJet or Super Flow chassis 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	Max- Torque	Engine Case	CID	Heads	Compression	Camshaft	Carb	Pipes	Owner	Bike	From
53	66	HD	88	HD		Stock	Stock CV	Stock	-	99 FXDWG	Fast Company Dyno Kirkland, WA
59	72	HD	88	HD		Stock	EFI Stock	Stock	-	99 FLH	HD
59	72	HD	88	HD		Stock	CV	Stock	Greg Coen Motors	99 FXD	Greg Coen Motors
60	78	HD	88B	HD		Stock	CV	Stock	-	2000 FSTC	Dyno
62	77	HD	88	HD		Stock	EFI Stock	Stock	-	99 FLH	Dec 98 Hot Rod Bikes
64	78	HD	88	HD		Stock	CV	Stock	-	99 FXD	Hot Rod BIkes June 1999
64	78	HD	88	HD		Stock	EFI Stage 1	Stock	HD	99 FLH	HD
67	78	HD	88	HD	8.9:1	Stock	CV w/Thunderslide	V&H	Gregory Rocha	02 FLSTS	Pikes Peak Performance Colorado Springs, CO
67	79	HD	95	HD	8.9:1	SE Stage II	EFI Stage II	Stock	HD	2000 FLTRSEI	motorcycle.com
68	78	HD TC-B	88	HD		Stock	CV w/Thunderslide 185 main	Hooker 2 1/4" Staggered Duals	Max Green	01 FXSTC	HD New Orleans
68	82	HD	88	HD		SE Stage II	EFI Stage II	Stock	HD	99 FLH	HD
68	83	HD	95	HD		Stock	EFI Stage 1	Stock	HD	99 FLH	HD
69	79	HD	88	HD		Stock	CV Rejetted	SE Slip Ons	B.D.	99 FXDWG	Fast Company Dyno Kirkland, WA
69	80	HD	88B	HD	8.9:1	Stock	CV w/DynoJet 185 main	Python 3 slip-ons	Mack Mackenzie	01 FXSTB	Myrtle Beach Performance
69	83	HD	95	HD	8.9:1	Stock	EFI Stock	Stock	Stock	01 FLTRSEI	Bartell's HD
70	83	HD	88	HD		Stock	EFI Stock - SE Air Cleaner	Stock	-	99 FLH	Dec 98 Hot Rod Bikes
70	84	HD TC-B	88	HD		Stock	CV DynoJet	V&H Classic	Steve Peters	99 STSF	Skips Custom Cycles Winchester, VA
70	87	HD TC-B	88	HD		Woods TW-6	Woods Rebel CV	SE Slip ons	Joe Noonan	01 FXSTB	H-D of Rocklin
70	89	HD	95	HD		Stock	CV Stage 1	H-D 2-1	Robert Jensen	99 FXD	H-D of Rocklin
70	93	HD	95	HD		SE Stage II	EFI Stage II	Stock	HD	99 FLH	HD
71	80	HD	88	HD		Stock	EFI	Samson Slash-cut	Frank McCutchen	99 Road King	Seacoast HD
72	88	HD	95	HD		Stock	CV Stage I	SE Slip ons	HD	99 FXD	HD
74	87	HD	88	HD		Stock	EFI Power Commander	Thunderheader	Mike Shute	99 FLHTPI	Motown Harley
75	89	HD TC-B	88	HD		Stock	CV Thunderslide	Hooker 2-1	Buddy Heller	00 FXST	HD Klagenfurt Austria
76	91	HD	95	HD	9.3:1	Andrews TW-44	EFI Power Commander 2	Sampson Fishtails	Elliot Forseter	00 FLHRI	Olathe Suzuki Olathe Kansas
77	84	HD	88	HD		Stock	Mikuni HSR-42	Khrome Werks	-	99 FXD	Hot Rod Bikes June 1999
77	86	HD	88	HD		Stock	CV w/Thunderslide	V&H Straight Shots w/Power Cones	Conrad DeAbreu	01 FXDL	Psycho Dyno Man
78	94	HD	95	HD		Andrews TW-37	EFI w V&H	V&H Pro Pipe	Straycat	99 Road King
78	100	HD	95	HD		Stock	CV 44mm	V&H Pro Pipe	Bruce Bakken	99 FXDX	Twin Cities HD
79	83	HD	88	HD		SE-203	EFI Power Commander	White Bros. E-series	Mark Cole	99 FLHTCI	HD of Rocklin
79	90	HD	95	HD	9.3:1	Andrews TW-37	CV w/Turbulator	V&H Straight Shots	Chris Alberto	00 FXDWG	American Classic Cycles
81	90	HD	88	HD		SE-203	Power Commander 2	V&H Pro Pipe	Daniel Cushman	99 Road King	Spirit HD Pittsburgh, PA
81	90	HD	88	HD		SE-204	CV Modified	SE Slip-ons	Terry Bullington	00 FXDWG	CyclePath Kirkland, WA
81	101	HD TC-B	95	HD	9.25:1	.	CV Modified	CycleShack Slip-on	Larry Wakefield	00 FLST	Rev-Tek
81	102	HD TC-B	95	HD	10.25:1	Andrews TW-37	S&S Super E	Hooker 2-1	Kirk Jarvis	00 FLSTC	The Cycle Doctor
82	88	HD	88	HD		Bartels	Mikuni HSR-45	Cycle Shack	HRB	99 FXD	Hot Rod Bikes June 2000
82	92	HD	88	HD		Andrews TW-37	Mikuni HSR-45	V&H Straight Shots	Merle Davis	00 FXSTD	Victory Drive Indianapolis, IN
82	96	HD	95	HD		Andrews TW-50	CV Stage 1	H-D 2-1	Robert Jensen	99 FXD	H-D of Rocklin
82	97	HD	95	HD	10.25:1	Woods TW-6	EFI HD Stage 2 w/Power Commander	Thunderheader	Bruce Reid	00 FLHRI	R&E Engineering
82	99	HD	95	HD	10.25:1	SE-203	Mikuni HSR-42	Thunder Header	Jeff Stevenson	00 FLHR	H-D of Orange County
83	99	HD	95	HD J Precision	10:1	SE-203	EFI HD Stage 2 w/Power Commander	SE II Slash Cut	Dan Evans	01 FLSTFI	Future Cycle Richmond BC
85	98	HD	95	HD SE owner	10:1	Stock	Mikuni HSR-42	V&H Pro Pipe	Hank Smedley	99 FXD	Bob Dron HD
85	103	HD	95	SE	10.5:1	SE-203	S&S Super E	SE Mufflers	Larry Donaldson	01 FLHT	HD Jamestown, NY
86	101	HD	95	HD	9.3:1	SE-203	EFI HD Stage 2 w/Power Commander	SE Mufflers	Grant Thomas	00 FLHTCI	Zandi's V-Twin
88	97	HD	88	BC Gerolamy	9.3:1	Andrews TW-37	CV Stage 1	Cycle Shack Slip-on	Greg Coen Motors	99 FXD	Greg Coen Motors
88	103	HD	95	HD	10.5:1	SE-203	S&S	Kerker	Tom Mordas	99 Road King	Hartford HD
91	95	HD	95	Screamin Eagle	10.5:1	Andrews TW-60	EFI PowerCommander 2	Kerker with Mikuni Inserts	Dennis Collins	00 FLHRCI	Carl's Speed Shop
91	99	HD TC-B	95	HD Modified		Andrews TW-60	EFI Power Commander	Bub Bad Dogs	Len Hall	01 FLTRI	HD of Prince George
91	100	HD TC-B	95	Screamin Eagle	10:1	SE-203	SE CV 44mm	Thunderheader	Martin Perez	00 FLSTF	Hacienda HD
92	100	HD TC-B	95	Screamin Eagle	10:1	SE-211	SE CV 44mm	SE 2 Slip-on	Glenn Mills	00 FLSTF	Dyno Run
92	100	HD TC-B	95	Shortblock Charlie	9.6:1	Andrews TW-37B	EFI	Hooker 2-1	Marcel Caliboso	01 FXSTDI	Custom Performance Phoenix, AZ
92	100	HD TC-B	95	BC Gerolamy	9.3:1	Woods TW-6H	SE CV 44mm	HD Modified	V-Twin Tech	00 FXSTF	Chosa's HD
92	103	HD	95	BC Gerolamy	9.3:1	Andrews TW-37	CV Stage 1	Cycle Shack Slip-on	Greg Coen Motors	99 FXD	Greg Coen Motors
92	103	HD	95	SE	10.5:1	SE-203	Hikuni HSR-42	Thunderheader	Lloyd Davis	00 FLHT	Bloomington HD Bloomington, IN
93	105	HD TC-B	95	HD	10:1	SE-257	Mikuni HSR-42	V&H Straight Shots	Kyle Clark	00 FXSTF	Boswell HD Madison, TN
94	109	HD	95	HD	10.25:1	SE-203	SE CV 44mm	Samson True Duals	Dave Ostrowske	01 FLHR	Canton Cycle
95	99	HD	95	BC Gerolamy	9.7:1	Andrews TW-37	EFI BC Gerolamy Power Commander	Hooker Slip-on	Greg Coen Motors	00 FLH	Greg Coen Motors
95	104	HD	95	Bill Bishop	10.2:1	S&S 570 Gear Drive	HD EFI w/ Powercommander	Thunderheader	Chris Ward	01 FLHRI	Hawg Quarters Redford, MI
96	98	HD	95	Patrick Racing		PR-2	EFI Patrick Racing Power Commander	V&H Pro Pipe	Patrick Racing	99 FLH	July 01 Hot Rod Bike
97	98	HD	95	HD Reed Racing	10:1	Andrews TW-55	EFI BC Gerolomy Power Commander		Bill Shaffran	99 Road King	Flash Engineering
97	101	HD	95	Branch	10.5:1	S&S 585	Mikuni HSR-42	SE II Slip ons	Ken Bailey	01 FXDL	EB Cycle Monroe, MI
97	103	HD	95	BC Gerolamy	9.8:1	Andrews TW-50	CV w/Yost	Cycle Shack Slip-on	Greg Coen Motors	99 FXDWG	Greg Coen Motors
98	103	HD TC-B	95	HD	10.25:1	SE-257	Mikuni HSR-42	White Bros. E-series	Ron Douglas	00 FXSTNT	Custom Performance Phenoix, AZ
98	108	HD	95	Johnson Engine Tech (JET)	10.25:1	Andrews TW-50	SE CV 44mm	V&H Sraight Shots	Jim Reed	99 FXDL	Johnson Engine Technology
100	99	HD TC-B	95	Screamin Eagle	10:1	SE-S11	SE CV 44mm	ThunderHeader	John Ferry	00 FXSTD	Rolling Thunder
100	102	HD TC-B	95	Head Quarters	10.25:1	HQ-33	SE CV 44mm	V&H Pro-Pipe 2-1	Kevin Goose	00 FXSTC	Fast Lane Cycles
100	101	HD	95	BC Gerolomy	10.5:1	Andrews TW-55	S&S Super G	Thunderheader	Hap Ruhlman	00 FXDX	Custom Performance Phoenix, AZ
100	105	HD	95	Screamin Eagle	10:1	S&S 570G	Stage 2 EFI PowerCommander	White Bros. E-series	Tom Kelly	99 FLHRCI	Thunder Mfg. Phoenix, AZ
100	110	HD	95	HD ported	10.5:1	Andrews TW-60	EFI PowerCommander	Thunderheader	Paul Boyd	99 FLHRCI	Eagle Cycle Houston, TX
101	102	HD	95	EB Cycle	10:1	HQ 0033	Mikuni HSR-42	2-1	Dave Sandy	99 FLHT	EB Cycle Monroe, MI
101	104	HD	95	Screamin Eagle	10.5:1	SE-257	Mikuni HSR-42	V&H Pro-Pipe	"DaPrez" Frame	00 FXDL	Kinetic Playground Tulsa, OK
101	105	HD	95	HD by owner	9.8:1	Woods TW-6H	Mikuni HSR-42	Cycle Shack Slip-ons	David Furedy	00 FXDWG	Rolling Thunder
101	107	HD	95	Headquarters	10.25:1	HQ 33	SE CV 44mm	V&H Pro-pipe	Jeff WInter	99 FLHR	Victory Drive Indianapolis, IN
101	112	HD	95	Branch		Andrews TW-60	Mikuni HSR-42	Thunderheader	L. Deleski	99 FXD	Dyno
101	114	HD	95	Head Quarters	10.5:1	HQ-33	HSR-42	Thunderheader	Rob Holcomb	2001 FLSTF	Outpost HD Pueblo, CO
102	103	HD	95	SE HTCC	10.5:1	SE-211	HSR-42	Bassani Pro Street	Dave Cote	02 FXSTB	Racers Edge Las Vegas, NV
103	100	HD	88	Wildwood HD	9.3:1	SE-203	AeroCharger w/CV	AeroCharger	Mike West	00 FXD	Baldhill Hawgbarn Hemlock, NY
103	105	HD	88	SE	10.5:1	S&S 585G	S&S Super G	Cycle Shack	Rawlston	99 FXDX	JR's Hawghouse
104	95	HD	95	Wildwood HD	10.8:1	TW-60	Mikuni HSR-42 ProBack	White Bros. E-series	Tony Salters	99 FXDL	Wildwood Dyno
104	101	HD	95	Edlebrock HD		Edlebrock 1748	Qwiksilver 40mm	H.P. Racing	Edlebrock	99 FXDL	Edlebrock Dyno
104	104	HD	95	Screamin Eagle	10.5:1	SE-211	SE CV 44mm	White Bros. E-series	Gregg Lucci	00 FLTR	Motor City HD
104	106	HD	95	SE HTCC	10.25:1	SE 211	HSR-45	Thunderheader	Brian Grosser	01 FXSTD	American HD Ann Arbor, MI
105	101	HD	95	Bill Bishop	10.8:1	TW-60 w/gear drive	HD EFI w/ PowerCommander	V&H Pro-Pipe	Butch Borski	00 FLHTCUI	Hawg Quarters Redford, MI
105	102	HD	95	Screamin Eagle	10.5:1	SE-257	HSR-42	White Bros. E-series 18 disks	Tom Casey	02 FXDX	DynoMike Stuart, FL
105	107	HD	95	HD HTCC	10.25:1	SE-211	HSR-45	Thunderheader	Tony Semple	01 FLSTF	American HD Ann Arbor, MI
106	97	HD	95	HD Powell Performance	10.5:1	TW-60	S&S Super G w/Thunderjet	SE Slip-on	Rich Gibson	00 FXDWG	Kegel MC
106	105	HD	95	HD R&R Cycle	10.7:1	Andrews TW-60	Mikuni HSR-45	Python 3	Bob Zajac	00 FXDL	R&R Cycles
106	115	HD	103	SE Ported	10.5:1	SE-258	S&S Super G w/Thunderjet	Thunderheader	Todd Dearinger	00 FLHR	Downtown HD Seatle WA
107	100	HD	95	Branch	10.5:1	Flowmetrics TC-55	Mikuni HSR-45	White Bros. E-series	Gordy Kierstead	99 Road Glide	Seacost HD
107	103	HD	95	Baisley		Woods TW-9B	Wood Prowler	V&H Pro-pipe	Chip Larkin	99 FXDWG	Dyno
107	111	HD	95	John Sachs	9.9:1	TW-50	Mikuni HSR-42	Thunderheader	Steve Coreless	99 Road King	Gilardi's Custom Ft. Lauderdale, FL
108	102	HD	95	Bill Bishop	11.4:1	Bill Bishop Special	Modified SE 44mm	Thunderheader	Jim Ingalls	01 FXDWG	Hawg Quarters Redford, MI
108	106	HD	95	Victory Drive	10:1	SE 211	Holley 2 Barrel	While Bros E-series	Wayne Piepenbrok	00 FLHTC	Victory Drive Indianapolis, IN
108	119	HD	103	SE	10:1	SE 211	EFI BC Gerolomy w/ Power Commander	Thunderheader	Roy Nicholson	00 FLHTCI	American HD Ann Arbor, MI
109	105	HD	95	Bill Bishop	11.3:1	Andrews TW-60	SE CV 44mm	Thunderheader	Billy Decker	01 FLSTF	Hawg Quarters Redford, MI
109	109	HD	95	Eagle HD	10.5:1	SE-257	Mikuni HSR-45	SE Slip-ons	Larry Edmundson	00 FXDWG	Eagle HD Lafayette, IN
110	104	HD	95	Screamin Eagle	10.5:1	SE-258	HD Stage 2 EFI PowerCommander 2 BC Gerolomy Throttle Body	White Bros. E-series	Leonard Driscoll	01 Road King	Rocklin HD Rocklin, CA
110	110	HD	103	Screamin Eagle	10.5:1	SE-258	SE Holley	White Bros. E-series	Harley-Davidson	01 FXD	July 01 Hot Rod Bike
110	138	HD	125	Bill Bishop	10:1	SE-257	HD EFI w/ Powercommander	Thunderheader	Jim Brun	99 FLHTCI	Hawg Quarters Redford, MI
111	100	HD	95	BC Gerolomy	10.7:1	Andrews TW-60	S&S Super G w/Thunderjet Bored	CycleShack	Hap Ruhlman	00 FXDX	Custom Performance Phoenix, AZ
113	107	HD	95	Baisley	10.5:1	Wood TW-9B	Woods CV 44mm	V&H Pro Pipe	Chip Larkin	99 FXDWG	Solid Performance
113	127	HD	103	Screamin Eagle Victory Drive	10:1	Woods TW-6H	SE CV 44mm	V&H Pro Pipe	Chris Jackson	01 FXDWG2	Victory Drive Indianapolis, IN
115	112	HD	95	CycleRama	10.5:1	CycleRama	HD EFI PowerCommander 2	CycleRama		01 Road King	CycleRama
115	116	HD	95	John Sachs	10.3:1	Andrews TW-55	Mikuni HSR-42	White Bros. E-series	Bill Farris	01 FXD	Worldwide Dynamics
118	118	HD	103	Megaflow	10:1	TW-55	HSR-45	V&H Straight Shots	Doug Bliven	01 FXDWG	Rosa's Cycle Huntington, NY
119	113	HD	103	SE	10:1	SE-256	HSR-45	Thunderheader	Shawn Dorn	01 FXDWG	American HD Ann Arbor, MI
120	113	HD	101	Eagle HD	11.5:1	SE-258	Mikuni HSR-45	SE Slip-ons	Dan Bell	00 FLHRP	Eagle HD Lafayette, IN
120	125	HD	103	Screaming Eagle	11.5:1	SE-257	SE CV 44mm	V&H Short Shots (no baffles)	Aaron Tetzlaff	00 FXD	Lacrosse HD Lacrosse, WI
120	125	HD	116	S&S	11:1	S&S 640-G	Woods CV 44mm	V&H Pro Pipe	Chip Larkin	99 FXDWG	Solid Performance
127	135	HD	125	Bill Bishop	10.5:1	SE-258	S&S SuperG	V&H Pro-Pipe	Pierre LaPorte	00 FLSTF	Hawg Quarters Redford, MI
130	134	HD	95	Screamin Eagle	10.5:1	SE-257	SE CV 44mm Nitrous Oxide	Thunderheader	John Suveg	01 FLSTF	Stevenson's Cycle
136	124	HD	95	CycleRama	11:1	CycleRama	Mikuni HSR-48	CycleRama	Wes Brown	93 FXR TC conversion	CycleRama
138	125	HD	107	BC Gerolomy		S&S 640	S&S Super D	RB Racing	HD of Lynchburg	01 FXD	HD of Lynchburg
157	137	HD	95	Patrick Racing		PR-2	EMC/ATP American Turbo Power	ATP	John Cabral	99 FLHT	July 01 Hot Rod Bike
159	147	HD	107	CycleRama	11:1	CycleRama	Mikuni HSR-48	CycleRama	Wes Brown	93 FXR TC conversion	CycleRama Pinellas Park, FL

TWIN CAM Warning

If you have a Twin Cam engine manufactured before 2000 you may want to make sure you have the parts listed in the service bulletin below installed in your engine. There are documented problems where the cam bearing support plate and cam bearings fail. This is occurs on stock bikes and modified bikes. If the problem occurs, it can result in catastrophic failure of the cams, cam bearings, cam support plate, cam chain tensioners, blown oil pump and lifters. The fix is very expensive, a failure is even more expensive.

If you have an aftermarket cam shafts, most Harley-Davidson Dealers are not covering this under warranty. There are two repair kits from Harley-Davidson that contain the parts to fix this problem.
Fuel injected models require part number 24984-99.
Carburetor models require part number 24985-99.
There is an extensive list of components is this repair kit including camshafts, cam bearings, cam bearing support plate, cam sprocket, cam chain, cam tensioner, oil pump, hydraulic lifters and gaskets.

A complete description of this problem was published in the December 2000 American Iron Magazine page 28.

Harley-Davidson Service Bulletin M-1100 "Cam Bearing Repair Kits" issued July 10, 2000 defines the problem and repair.