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Steel Thunder Custom Cycles

152 York Drive

Marshfield, MO 65706

417-468-2326

Cams & Cam Side Parts

for your Harley Davidson® or American Custom Motorcycl

Gear Case covers for big twin alternator engines.Gear Case Covers for evo big twin harley-davidson motorcycles.

MU66718        MU66731

GEAR CASE COVERS FOR SHOVELHEAD & EVOLUTION BIG TWIN

These top quality die cast gear covers are machined to exact tolerances and come complete with installed bushings and cam seal. Bolts directly on Big Twin alternator engines as listed.

Part#:MU66718  - Late 1973/1992 with End Oiling Pinion Bushing (HD rpls # 25268-84A, 25258-80B & 25269-90) ... $142.31 including shipping* 

 


Part#:MU66731 - Fits 1993/Later Evolution (HD rpls # 25256-93A) ... $136.51 incluidng shipping*
 

 

Andrews Cams for Big Twin Evo





ANDREWS CAMS FOR BIG TWIN EVOLUTION ALL YEARS

Time tested and track proven Andrew's cams have computer enhanced design features that provide a superior combination of performance gains and reliability without sacrificing component longevity. Installation instructions included. Timing and Duration measured at .053" cam lift. See Chart below. Made in the U.S.A. Prices include free shipping*. CHART BELOW:


NOTE:
Always replace the INA brand cam bearing with our Torrington brand cam bearing: Cam gear Needle bearing for 58/Later. ONLY FOR PURCHASE WITH CAM, NOT AVAILABLE FOR PURCHASE ALONE. Part#:MU66922 ... $8.20

 

Application Timing (1) Valve Lift Duration (1) Grind Part # Price Buy Now
Listed for reference: 1984/1987/Later OE cam is 212° intake, 202° exhaust, .472" lift on both valves.

03/39

54/02

.495"

.495"

222

236

OEM (L)

1988/1991

---
---
---
Listed for reference: 1992/Later OE cam very close to 1984/1987 specs. California cams are approximately 178° duration. Fuel injected "0" cam is 200° duration intake and 216° duration exhaust.

02/30

31/09

.472"

.472

208

202

OEM (N)

1992/Later

---
---
---
Bolt-in cam for street or touring use with more mid range and upper end power. Much more stuff that stock '88 or '92 EV cam. Especially effective in reducing oil temperatures. USE STOCK SPRINGS. EFI or Carb.

15/31

45/13

.485"

.495"

226

238

EV13 MU66866 $181.10
 
Bolt-in cam for light bikes (FXRS, etc). More mid range power. Idle smoothness unaffected. This is a 6000+RPM cam for stock heads and springs with hydraulic lifters. USE STOCK SPRINGS.

21/37

43/15

.495"

.495"

238

238

EV3 MU66828 $181.10
 
Bolt-in mild street cam that produces more torque and horsepower for all around riding when used in 80 cubic inch engines with the standard 8.5 to 1 compression ratio. This cam pulls strong between 1800/5200 RPM. USE STOCK SPRINGS. EFI or Carb.

10/20

40/08

.498"

220

228

EV23 MU66831 $181.10
 
Bolt-in street cam with fast open and close ramps. Similar timing to EV3 but designed to produce a very broad torque band. Pulls 1500 to 6000 RPM. USE STOCK SPRINGS. EFI or Carb.

20/36

44/16

.495"

.495"

236

240

EV27 MU66881 $181.10
 
 
Bolt-in performance cam with fast open and close ramps. Similar to EV3 but higher static compression pressure for 6000+RPM with stock heads and hydraulic lifters. USE STOCK SPRINGS.

25/41

49/17

.495"

.495"

246

246

EV46 MU66875 $181.10
 
Easy installation with longer duration for modified street engines with hydraulic lifters. Power range from 3000/6500 RPM. USE STOCK SPRINGS.

28/44

54/22

.510"

.510"

252

256

EV51 MU66825 $181.10
 
 

(1) Timing and Duration measured at .053" cam lift.

Cams for Twin Cam 88.
ANDREWS CAMS AND CAM KITS FOR TWIN CAM 88

Known the world over for their dependable performance products, Andrews has upgraded their Rear Cam and Rear Cam Drive Sprocket to include the new involute spline that has proven to solve the weak link in the Twin Cam 88" valve train. Available in your choice of complete Cam kits or just the front and rear Cam with bearings only. The Cams kits include an upgraded style roller bearing for the rear Cam with a new ball bearing for the front Cam and a high performance drive sprocket made from a heat treated alloy steel. This drive sprocket has a built-in splined spacer that increases the width by approximately 1/4". Three shims are included to set the proper end play. To further enhance the dependability factor, a Grade 8 sprocket bolt with a hardened washer is also included. The base circle of these Cams have the same dimensions as the OEM Cams and can be used with the OEM non-adjustable pushrod, but to ease installation and eliminate the need to remove the fuel tank and rocker covers, we suggest that you use our adjustable pushrods. Complete kits fit Twin Cam 88 1999/Later. 'Cams only' fit Twin Cam 88 2000/Later. Made in the U.S.A. by Andrews. Prices include FREE SHIPPING* CHART BELOW:
Application Valve Lift TDC Lift (at Valves) Timing @ .053"  Duration (Degrees) @ .053 Grind Complete Cam Kit 1999/L Price Buy Now Cams without gear 2000/L Price Buy Now
 OEM Cam listed for reference. Carbureted models. .473"

Int .072"

Ex .110"

Int -02/38

Ex 36/04

Int 216

Ex 220

A            
OEM Cam listed for reference. Fuel injected models. .473"

Int .087"

Ex 110"

Int 02/34

Ex 36/04

 Int 216

Ex 220

B            
Bolt-in cams designed for two up riding on heavier bikes, pulling a trailer or when using a sidecar. These cams produce much more torque and horsepower at the lower and middle RPM range. (1800/5500 RPM). Works well with carbureted or fuel injected models. .490

Intake .129"

Exhaust .112"

Int 09/37

Ex 43/07

Int 226

Ex 230

TW26A  MU69915 $319.63
 
MU66953 $266.24
 
Bolt-in cams that produce a broad torque band, excellent horsepower and a smooth idle. For best results use low restriction exhaust and a free flow air filter. (2200/5500 RPM). Works well with carbureted of fuel injected models. .510"

Int .151"

Ex 140"

Int 14/42

Ex 48/12

Int 236

Ex 240

TW37B MU69916 $319.63
 
MU66954 $266.24
 
Cams for lighter bikes that produce a 9.5:1 compression ratio or higher. These cams can be used with 88ci or 95ci and produce the maximum torque and horsepower at the higher RPM ranges. (2600/6000 + RPM) OEM valve springs can be used but valve to piston and valve to valve clearances must be checked. .510"

Int .184"

Ex .168"

Int 20/48

Ex 54/18 

Int 248

Ex 252

TW50 MU69917 $319.63  
 
MU66955 $266.24
 
 
Cams for maximum output. With a well prepped engine using 95 cl cylinders and the proper head work, 100+horsepower is within reach. Requires a minimum of .620" valve travel and minimum of .060" piston to valve clearance. High lift valve springs (2400/6000 + RPM). .560"

Int .205"

Ex .192"

Int 24/56

Ex 58/22

Int 260

Ex 260

TW60A MU69918 $319.63
 
 
MU66956 $266.24
 
High lift variation of the TW-50; this Cam is best for 95+ inch engines with 9.5+ C.R. Max torque & HP at middle & higher RPM. High lift Valve Springs & Top Collars must be used (2600-6300+RPM) .550"

Int .197"

Ex .181"

.053" Int 24/60

Ex 52/20,

Int 248

Ex 252

TW55 MU69924 $319.63
 
MU66952 $266.24
 
Andrews Cams with gear for Knucklehead, Panhead and Shovelhead.

ANDREWS CAMS WITH GEAR FOR PANHEAD & SHOVELHEAD

Whether you want a better street cam for a stock motor, a big lift cam for a hotrod bike, or something in between then these cams are what you are looking for. All of these cams are computer designed and precision ground from alloy steel billet. (1) Timing and Duration measured at .053" cam lift. Made in U.S.A.

FOR PANHEAD AND SHOVELHEAD 1948/1984 SEE CHART BELOW:

Prices include free shipping*

Application
Timing (1)
Duration (1)
Grind
Valve Lift
Year
Part #
Price
Buy Now
Shovel
Pan
Stock 'H' grind Harley-Davidson® front cylinder timing used for comparison.

-6/46

44/20

220

244

Stock

H

.390"

.390"

.412"

.412"

---
---
---
---
Stock 'H' grind Harley-Davidson® rear cylinder timing used for comparison.

14/38

44/20

232

244

Stock

H

.390"

.390"

.412"

.412"

---
---
---
---
Mild Street - Panheads and Shovelheads, smooth idle, more power through RPM range. Bolts in with no head work.
Intake 21/41 Exhaust 41/21

242

242
J
.405"
.425"
1948/1969
MU66800
$181.10
 
---
1970/Early 1977
MU66801 $181.10
 
---
Late 1977/1984
MU66802 $181.10
 
Street/Drags - Bolts into Shovelhead except 1980/1981 with no head work. More mid range and high end power. Idle smoothness unaffected. Timing

21/43

43/21

244

244

A
.450"
.470"
1948/1969
MU66803
$181.10
 
---
1970/Early 1977
MU66804 $181.10
 
---
Late 1977/1984
MU66805 $181.10
 
Street/Drags - Much more mid range and high end power. Idle smoothness unaffected. The cam for modified 74ci/80ci and small strokers. Spring spacing required.

26/50

50/26

256

256

B
.485"
.507"
1948/1969
MU66806
$181.10
 
---
1970/Early 1977
MU66807 $181.10 
 
---
Late 1977/1984
MU66808 $181.10
 
Hydraulic version of a "B" cam. Usually a bolt in spring spacing may be required on Shovelheads 1980/1981.

24/52

56/32

256

256
BH
.450"
---
Late 1977/1984
MU66811
$181.10
 
Hotter version of a "B" grind. Great street cam especially for 84ci/88ci strokers. Maximum torque available from 2500-6500 RPM.

32/56

56/32

268

268

6
.510"
---
1970/Early 1977
MU66813
discontinued
---
---
Late 1977/1984
MU66814 $181.10
 
Best production cam made for big street engines. Strokers from 84ci/96ci will really turn on with this cam. Broad torque range pulls from 2000=7000+ RPM.

37/61

61/37

278

278

C
.525"
 
1970/Early 1977
MU66816
discontinued
---
 
Late 1977/1984
MU66817 discontinued
---

(1) Timing and Duration measured at .053 inch cam lift.

NOTE: Rocker arm ratios are as follow: Knucklehead 1,0:1, Panhead 1.5:1, Shovelhead 1.43:1. 1980/1981 Shovelhead motors with anything higher than a valve lift of .430 inch will require valve guide to top spring collar clearancing.

Sportster cams from Andrews. Evo and Ironhead Sportsters.

Sportster Cams

ANDREWS CAM AND GEAR SETS FOR SPORTSTER

A camshaft upgrade is the most logical step after air filter, exhaust, carburetor, and ignition system improvements have been made. It will improve mid and upper-end power. All camshafts listed are ground with stock size base circle and can be used with stock push rods. Instructions included. Made in U.S.A.

IRONHEAD SPORTSTER 1957/1980: Street 900/1000: Great mid-range and upper end power. Biggest cam available for no head work installation. Can use stock springs, need 9:1 or higher compression, 1982 engines may require spring spacing. Special requirements: bolt-in. Power range: 2000/7000 RPM. Cam Grind: Y. Fits Ironhead Sportster 1957/1970.

Model Year Part # Price Buy Now
1957/1970 MU66882  $345.06  
 
1971/1980 MU66883  $326.20  
 

Cam Specs for Ironhead Sportster with stock 1.43:1 rocker arm ratio.

EVOLUTION SPORTSTER 1986/2003 SEE CHART BELOW:

Prices include free shipping*

Description Special Requirements Power Range Cam Grind Model Year Part # Price Buy Now
For stock 883cc, 1100cc or 1200cc engines. More duration and lift means extra power. Stock springs and lifters can be used. Special requirements: bolt-in. Power range 2000/6000 RPM. Cam Grind V2. Fits Evolution Sportster 1986/Later bolt-in 2000/6000 RPM V2 1986/1990 MU66891 $279.47
 
N2 1991/1999 MU66892 $279.47
 
 
N2 2000/2003 MU66844 $279.47 
 
 
Street/Drags: stock or modified 883cc, 1100cc or 1200cc engines. Results in slightly higher idle speed. Special requirements: valve/spring clearance. Power range 2000/6000 RPM. Cam Grind V4. Fits Evolution Sportster 1991/1999. valve/spring clearance 2000/6000 RPM N4 1991/1999 MU66894 discontinued  
N4 2000/2003 MU66845 $279.47 
 
Modified 1100cc, 1200cc, stroked 883cc engines with stock springs and hydraulic lifters. Special requirements: valve/spring clearance. Power range 2000/6500 RPM. Cam Grind V8. Fits Evolution Sportster 1991/1999. valve/spring clearance 2000/6500 RPM N8 1991/1999 MU66896 $279.47
 
 
N8 2000/2003 MU66846 $279.47
 
 

Cam Specs for Evo Sportsters with stock 1.625:1 rocker arm ratio.

Billet aluminum tappet block kit for Big Twin Evo from Jims, chrome plated.

JIMS BILLET ALUMINUM TAPPET BLOCK KIT FOR BIG TWIN EVOLUTION

A real improvement over the stock tappet and tappet block, this Chrome Plated Billet Aluminum Tappet block Kit from JIMS is CNC machined from billet 7075-T651 aluminum and has a tensile strength three times stronger than cast aluminum blocks. These tappet blocks are machined to the center line of the camshaft and hold a plus/minus of .002". In addition, the bores are held perpendicular to the mounting flange to .0002". These tappet blocks will accommodate a gross valve lift of .625" at the valves, which allows a clearance of .035 roller to block free play. The blocks will accommodate most small base circle cams having a lift of .655" or more with simple modification. Included in this kit are front and rear tappet blocks, four JIMS "Big Axle" PowerGlide Tappets, James Tappet Block Gaskets and Chrome Tappet Block Screws. Use Tappet Block alignment tool 60735 for a professional job. Fits Big Twin Evolution 1984/Later. Made in U.S.A.

Part#: MU61954 ... $793.71 including free shipping*

 


Spline Drive

High Strength Cam Drive Sprocket for Twin Cam 88.

ANDREWS HIGH STRENGTH CAM SPROCKET FOR TWIN CAM 88

'It's better to be safe than sorry' is a common statement in the world of motorcycling, and is gospel when it comes to any performance work. After serious design flaws were found in the early keyed type rear cam drive, Harley-Davidson went to the updated spline design but failed to improve the material used in the gear. Andrews Products has designed their high strength heat treated alloy steel Cam Drive Kit to increase the gear to shaft strength. The OE style spacer has been eliminated and the involute spline width of the gear has been increased by approximately 1/4". The kit includes a Grade 8 mounting bolt with a hardened steel washer. Three spacer shims are also included to duplicate the OEM length. This kit is a must with any cam change. See section 10 for special tools needed to perform this gear change. Fits Twin Cam 88" models 2000/Later. Also fits any splined style Screaming Eagle or aftermarket cam for Twin Cam 88 1999/Later.(Rpls HD 25716-99 & 25446-99.) Made in the U.S.A.

Part#:MU66096 ... $86.35 including shipping*

 

Cam Side Parts, Cams

 

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