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Mild Bill (Asshole #27)
StephG (Asshole#108)

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Cam Specs Evo BT

A Few Brief Descriptions:

Duration is the length of time a valve is kept open.
Overlap is the amount of time both the intake and exhaust valves are open simultaneously.
Lift is the distance a valve rises.
Bolt-in describes a cam that does not require beefing up the valve train. This is generally considered to be less than .500 lift.

Cams are deep science, but these are enough terms to let you bluff through most camshaft conversations.

General

Many articles on the stock INA camshaft bearing have been posted to r.m.h and the digest. It is highly recommended to swap it for a Torrington if you install an aftermarket cam. The Torrington has many more roller bearings than the INA, and the larger number of camshaft support points distributes the forces more evenly. It is generally agreed that the INA bearing will disintegrate with a non-stock cam, perhaps taking your motor with it.

When replacing the camshaft you should also install adjustable pushrods. This will greatly aid any future work on your bike.

"Aluminum pushrods are thicker and quieter than chrome-moly pushrods but not as rigid." -- Jon Boulle

Cam Recommendations

"The Andrews EV13 works very good with heavy bikes like the FLHT and FLT. It has a lot of torque in the 2000-3000 region but starts loosing power above 4500.

The Crane 316 really works good with shaved heads, good carb and exhaust. With the right combination it will give 72-75 horses to the rear wheel but does give up some torque in the 2000-3000 region. Best for lighter bikes and Baggers that spend lots of time at high speeds.

The Andrews EV3, EV27 and Crane 310. These are the best bolt-ins. Have good torque in the 2000-3000 region with plenty of pulling power. They run good as a bolt in-but with shaved heads, good carb and exhaust really make the bike run like the Motor Company should have done in the first place. They will give 65-70 horses with a good carb and exhaust." -- Leonard Pennock

"Andrews has always ground their cams with very gentle ramps. This translates to less power than say Sifton cams with the same specs. They are now coming out with cams that have fairly quick ramps for better power which is the EV27, EV46, and EV59.

If 2 cams have the same duration, but one has faster ramps, then the cam with the faster ramps will be the hotter cam. Leineweber and Katley also sell cams with extremely fast ramps.

I run a Leineweber cam with specs that are so damn close to the EV46 that I would say Andrews was trying to copy it and it really is one hot cam. But Leineweber still opens the valves faster than the new Andrews cams. Their cams go from no lift to .053 in about 25-30 degrees." -- Bob Schleiger

Jon Boulle supplied his cam specification notes for the remainder of this section. He has converted the Lienweber specs to .053 from .020




Andrews

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CAM GRIND         TIMING DURATION LIFT     TIMING DURATION LIFT

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EV1          intake 12/34 226 .485     exhaust 34/12 226 .485

EV13         intake 15/31 226 .485     exhaust 45/13 238 .495

EV27         intake 20/36 236 .495     exhaust 44/16 240 .495

EV3          intake 21/37 238 .495     exhaust 43/15 238 .495

EV46         intake 25/41 246 .495     exhaust 49/17 246 .495

EV35         intake 21/37 238 .495     exhaust 52/20 252 .530

EV5          intake 28/44 252 .530     exhaust 52/20 252 .530

EV57         intake 26/46 252 .530     exhaust 59/27 266 .560

EV59         intake 26/46 256 .560     exhaust 56/24 260 .560

EV7          intake 31/55 266 .560     exhaust 59/27 266 .560

EV79         intake 31/55 266 .560     exhaust 64/32 276 .550

EV9          intake 36/60 276 .550     exhaust 64/32 276 .550

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Bartel's

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CAM GRIND         TIMING DURATION LIFT     TIMING DURATION LIFT

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BP20         intake 18/36 234 .490     exhaust 45/13 238 .495

BP40         intake 21/37 238 .495     exhaust 48/20 248 .495

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Carl's Speed Shop

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CAM GRIND         TIMING DURATION LIFT     TIMING DURATION LIFT

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CM495F       intake 19/47 246 .495     exhaust 50/16 246 .495

CM4          intake 28/44 252 .495     exhaust 52/20 252 .495

CM5          intake 19/47 246 .580     exhaust 50/16 246 .580

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V-Thunder

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CAM GRIND         TIMING DURATION LIFT     TIMING DURATION LIFT

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EVO-2000     intake 2/38  220 .480     exhaust 35/1  214 .456

EVO-3000     intake 10/34 224 .500     exhaust 34/10 224 .500

EVO-3010     intake 15/39 234 .500     exhaust 39/15 234 .500

EVO-3020     intake 18/42 240 .500     exhaust 42/18 240 .500

EVO-3030     intake 16/44 240 .530     exhaust 44/16 240 .530

EVO-3040     intake 17/45 242 .510     exhaust 50/22 252. 510

EVO-3050     intake 22/50 252 .510     exhaust 50/22 252 .510

EVO-3060     intake 24/56 260 .585     exhaust 61/29 270 .585

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Crane

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CAM GRIND         TIMING DURATION LIFT     TIMING DURATION LIFT

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1-1103       intake 16/40 236 .490     exhaust 43/19 242 .490

1-1000       intake 19/43 242 .490     exhaust 48/24 252 .490

1-1001       intake 24/48 252 .490     exhaust 57/25 262 .500

300-2        intake 15/31 226 .460     exhaust 32/12 236 .470

300-2B       intake 12/34 226 .490     exhaust 41/15 236 .490

316-2/286-2  intake 19/43 242 .480     exhaust 48/24 252 .490

326-2/296-2  intake 24/48 252 .490     exhaust 57/25 262 .500

H306-2       intake 28/54 262 .500     exhaust 69/23 272 .510

H310-2       intake 23/63 266 .550     exhaust 68/28 276 .550

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Harley-Davidson

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CAM GRIND         TIMING DURATION LIFT     TIMING DURATION LIFT

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84-87 "V"    intake -6/38 212 .472     exhaust 25/-3 202 .472

88-91 "L"    intake 3/39  222 .495     exhaust 54/2  236 .495

84-93 "C"    intake -18/6 168 .462     exhaust 5/-18 168 .462

92-93 "N"    intake -2/30 208 .472     exhaust 31/-9 202 .472

BOLT-IN      intake 16/48 244 .480     exhaust 51/19 250 .480

OPTIMAL      intake 23/47 250 .530     exhaust 56/24 260 .530

EAGLE II     intake 26.5/50.5 257 .500 exhaust 55.5/31.5 267 .500

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Headquarters

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CAM GRIND         TIMING DURATION LIFT     TIMING DURATION LIFT

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HQ-23        intake 19/47 246 .600     exhaust 52/24 256 .530

HQ-24        intake 20/36 236 .500     exhaust 52/19 251 .500

HQ-25        intake 18/38 236 .550     exhaust 42/14 236 .550

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Leinweber

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CAM GRIND         TIMING DURATION LIFT     TIMING DURATION LIFT

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RE-E-1       intake 44/63 287 .470     exhaust 69/38 287 .470

E-2          intake 43/66 285 .470     exhaust 67.5/37 285 .470

RE-E-3       intake 47/71 298 .500     exhaust 77/41 298 .500

RE-E-31      intake 43/67 290 .500     exhaust 73/37 290 .500

RE-E-S       intake 44/62 286 .502     exhaust 70/36 286 .502

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Powerhouse

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CAM GRIND         TIMING DURATION LIFT     TIMING DURATION LIFT

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500P         intake 16/42 238 .500     exhaust 44/16 240 .500

530G         intake 18/44 242 .530     exhaust 50/16 246 .530

560V         intake 18/50 248 .560     exhaust 54/18 252 .560

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Red Shift

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CAM GRIND         TIMING DURATION LIFT     TIMING DURATION LIFT

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575V2        intake 25/54 259 .575     exhaust 63/18 261 .575

625V2        intake 33/58 271 .625     exhaust 64/28 272 .625

653V2        intake 24/50 254 .653     exhaust 58/16 254 .653

710V2        intake 45/67 292 .710     exhaust 72/39 291 .710

785V2        intake 38/61 275 .785     exhaust 72/27 279 .785

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Rev-Tech

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CAM GRIND         TIMING DURATION LIFT     TIMING DURATION LIFT

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05           intake 16/32 228 .465     exhaust 41/17 238 .475

10           intake 21/37 238 .475     exhaust 50/18 248 .480

20           intake 22/46 253 .480     exhaust 59/19 258 .490

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Rivera

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CAM GRIND         TIMING DURATION LIFT     TIMING DURATION LIFT

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EV-100       intake 27/43 253 .467     exhaust 59/24 263 .467

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S&S

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CAM GRIND         TIMING DURATION LIFT     TIMING DURATION LIFT

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502          intake 28/40 248 .500     exhaust 50/24 254 .500

561          intake 32/40 252 .560     exhaust 52/26 256 .560

562          intake 34/55 269 .560     exhaust 60/29 269 .560

563          intake 32/67 279 .560     exhaust 65/29 274 .560

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Sifton

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CAM GRIND         TIMING DURATION LIFT     TIMING DURATION LIFT

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140-EV       intake 30/42 252 .450     exhaust 55/27 262 .450

141-EV       intake 29/41 250 .480     exhaust 58.5/26 264 .480

143-EV       intake 20/35 235 .500     exhaust 46/14 240 .500

144-EV       intake 27/46 253 .490     exhaust 56/22 258 .490

145-EV       intake 28/42 250 .460     exhaust 50/20 250 .460

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