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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. |
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Lift is the distance a valve rises. |
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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 ---------------------------------------------------------------- CAM GRIND TIMING DURATION LIFT TIMING DURATION LIFT ---------------------------------------------------------------- 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 ---------------------------------------------------------------- Bartel's ---------------------------------------------------------------- CAM GRIND TIMING DURATION LIFT TIMING DURATION LIFT ---------------------------------------------------------------- BP20 intake 18/36 234 .490 exhaust 45/13 238 .495 BP40 intake 21/37 238 .495 exhaust 48/20 248 .495 ---------------------------------------------------------------- Carl's Speed Shop ---------------------------------------------------------------- CAM GRIND TIMING DURATION LIFT TIMING DURATION LIFT ---------------------------------------------------------------- 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 ---------------------------------------------------------------- V-Thunder ---------------------------------------------------------------- CAM GRIND TIMING DURATION LIFT TIMING DURATION LIFT ---------------------------------------------------------------- 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 ---------------------------------------------------------------- Crane ---------------------------------------------------------------- CAM GRIND TIMING DURATION LIFT TIMING DURATION LIFT ---------------------------------------------------------------- 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 ---------------------------------------------------------------- Harley-Davidson ---------------------------------------------------------------- CAM GRIND TIMING DURATION LIFT TIMING DURATION LIFT ---------------------------------------------------------------- 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 ---------------------------------------------------------------- Headquarters ---------------------------------------------------------------- CAM GRIND TIMING DURATION LIFT TIMING DURATION LIFT ---------------------------------------------------------------- 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 ---------------------------------------------------------------- Leinweber ---------------------------------------------------------------- CAM GRIND TIMING DURATION LIFT TIMING DURATION LIFT ---------------------------------------------------------------- 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 ---------------------------------------------------------------- Powerhouse ---------------------------------------------------------------- CAM GRIND TIMING DURATION LIFT TIMING DURATION LIFT ---------------------------------------------------------------- 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 ---------------------------------------------------------------- Red Shift ---------------------------------------------------------------- CAM GRIND TIMING DURATION LIFT TIMING DURATION LIFT ---------------------------------------------------------------- 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 ---------------------------------------------------------------- Rev-Tech ---------------------------------------------------------------- CAM GRIND TIMING DURATION LIFT TIMING DURATION LIFT ---------------------------------------------------------------- 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 ---------------------------------------------------------------- Rivera ---------------------------------------------------------------- CAM GRIND TIMING DURATION LIFT TIMING DURATION LIFT ---------------------------------------------------------------- EV-100 intake 27/43 253 .467 exhaust 59/24 263 .467 ---------------------------------------------------------------- S&S ---------------------------------------------------------------- CAM GRIND TIMING DURATION LIFT TIMING DURATION LIFT ---------------------------------------------------------------- 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 ---------------------------------------------------------------- Sifton ---------------------------------------------------------------- CAM GRIND TIMING DURATION LIFT TIMING DURATION LIFT ---------------------------------------------------------------- 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 ----------------------------------------------------------------