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Duration |
Valve |
Lift @ |
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Part# |
Grind |
Timing(*) |
0.053 |
0.020 |
Lift |
TDC |
Springs |
Application |
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Stock |
(A) |
-02/38 |
216 |
257 |
0.473 |
0.072 |
Stock |
Carbureted engine: stock cam data listed for reference. |
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Carburetors |
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36/04 |
220 |
260 |
0.473 |
0.110 |
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(Stock engine output is approximately 62 HP). |
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Stock |
(B) |
02/34 |
216 |
257 |
0.473 |
0.087 |
Stock |
Fuel injected engine: stock cam data listed for reference. |
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Injectors |
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36/04 |
220 |
260 |
0.473 |
0.110 |
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(Stock engine output is approximately 62 HP). |
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288121 |
TW21 |
10/30 |
220 |
255 |
0.498 |
0.134 |
Stock |
Bolt-in cam: More torque for all around riding with heavy |
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40/08 |
228 |
264 |
0.498 |
0.121 |
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bikes, stock compression ratios and stock pistons. |
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TW21 cams run great with fuel injectors or carburetors! |
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Similar to #23 cam for EV80. (1700-4800 RPM). |
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288126 |
TW26a |
11/35 |
226 |
262 |
0.490 |
0.138 |
Stock |
Bolt-in cam 88-95 inches and stock compression ratio. |
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41/09 |
230 |
266 |
0.490 |
0.112 |
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Great for two up touring, this cam will add torque and HP |
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TW26 cams run great with fuel injectors or carburetors! |
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at lower and middle RPM ranges. (1800-5200 RPM). |
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288131 |
TW31s |
10/46 |
236 |
272 |
0.510 |
0.131 |
Stock |
Great cam for motors with 95 inches and 9.8 to 10.2 CR. Lower TDC lift for easy installation. Similar to TW37 with different timing. (2000-5600 RPM). |
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52/08 |
240 |
276 |
0.510 |
0.120 |
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TW31 cams run great with fuel injectors or carburetors! |
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288137 |
TW37b |
18/38 |
236 |
272 |
0.510 |
0.174 |
Stock |
Hot street cams for 88 or 95 inches. 80+ rear wheel HP |
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46/14 |
240 |
276 |
0.510 |
0.148 |
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possible with well tuned 88 incher, more with 95. Smooth |
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TW37 cams run great with fuel injectors or carburetors! |
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idle, broad torque (2200-5600 RPM). 9.0 to 9.5 CR. |
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288144 |
TW44 |
21/41 |
242 |
279 |
0.495 |
0.182 |
Stock |
For 88 or 95 inches, CR 9.5 to 10.2. Max torque and |
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49/17 |
246 |
283 |
0.495 |
0.158 |
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HP at mid and upper RPM - (2300-5800). |
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288150 |
TW50 |
20/48 |
248 |
283 |
0.510 |
0.184 |
Stock |
Designed for easy installation in 95 inch motors with stock heads and 9.5 to 9.8 CR. (2400 to 6000 RPM). |
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54/18 |
252 |
287 |
0.510 |
0.168 |
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288155 |
TW55 |
22/46 |
248 |
283 |
0.550 |
0.197 |
Hi-lift |
Great cams for 95 inch engines with 9.8 to 10.2 CR. |
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52/20 |
252 |
292 |
0.550 |
0.181 |
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Max HP and torque at mid & upper RPMs (2600-6200) |
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288160 |
TW60a |
24/56 |
260 |
296 |
0.560 |
0.205 |
Hi-lift |
For well prepped 95-103 inchers with 10.2 to 10.5 CR |
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58/22 |
260 |
296 |
0.560 |
0.205 |
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and head work, 100+ HP is within reach. (2700-6500+) |
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(*) Timing and duration listed for .053 cam lift. |
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