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Don't let the Harley heat monster ruin your riding.
Reduce  Engine Surging
Improve Throttle Response
Reduce Engine Ping

 

HD 2007/2008 Engines

High Heat on 2007/08 HD engines

HD 2007/08 Performance Recommendations

Cool your exhaust temperature with the Wide Band O2 upgrade for 2007/08 HD

Harley Camshaft Specification Tables

HD Twin Cam Engine Builds
TC 128 HP 95 CID
TC 100HP Street Engine

The basics of Fuel Injection explained

DEWEY'S CUSTOM
Rammer Performance Air Cleaners
TC Performance Heads 100+HP

Pro Tuning on a Shade Tree Budget

   

 

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

 

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Modification, Installation, Maintenance and Tuning Index  will help you find most of the information you want on one page.

How to get Professional Tuning Results at home
Testing the Innovate Motorsport LM-1 portable air fuel meter

Profession Tuning on a Shade Tree Budget

Veypor VR2 Data Logger and Instrument Panel
Video Installation and Demo
Purchase VR2


Engine Performance
How to Build a
TC96 2007 Engines
TC88 70HP Stage1  
TC95 128HP Stage 3
TC95 100HP Street
 
TC96 2007 Stage 1/2
EVO 64 HP Stage 1
EVO 74 HP Stage 2
EVO 82 HP Stage 3
EVO 95 HP Stage 3
883 to 1200 Upgrade
Shovelhead Modifications

New EFI for EVO and TC

Performance Gallery
Horsepower Gallery
Evolution 80
Shovelhead
Sportster
Twin Cam 88/95
Evolution Unlimited
Sportster Unlimited
Drag Strip Gallery
Land Speed Racing Gallery
CV Carburetor
Modifying the CV carb
Tuning a CV carb
Camshafts
Selecting a cam
Install a TC 88/95 cam
Install a Big Twin cam
Install Sportster cams

Camshaft Specifications
Twin Cam
EVO
Shovel
XL


Exhaust Systems
EVO Exhaust Testing
TC Exhaust Testing
Khrome Werks AR100 test
Making Drag Pipes Work

SHOP TALK
Shop Manual
Carburetor
Carburetor Troubleshooting
Exhaust
Ignition
Finding Manifold Leaks
Camshafts
Cylinder Heads
Pistons and Cylinders
Clutch
Belt Drive
Shop Manual Appendix
$20 Bike Lift
Plug Wires
Spark Plugs
Engine Tuning
Nitrous Oxide
Motor Oil
Stutter Box
General Information
WEB Links
Buy Books and Manuals
Miscellaneous
Performance Calculations
Estimate Horsepower
Estimate 1/4 Mile Time
Estimate Top Speed

Engine Displacement
Exhaust Length
Gear Ratios
MPH at RPM
Air Density

The Nightrider Diaries
The ramblings of a genius a, a madman and something in between.

Where is Sifton Cams?

Autocom Active-7 tested

Harley-Davidson EFI
-EFI basics explained
-EFI modifications explained

183 HP, 2 carbs, 2680cc

Copyright 1997-2006  Stephen Mullen, Oldsmar, FL -+-