Engine & Primary
Drives - Page 7 of
12 
Cams & Pushrods
Shovel
|
Andrews
Cams & Pushrods for Iron Head Sportsters
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SHOVEL TOURING AND PERFORMANCE CAMSWhether you want
a better street cam for a stock motor, a big lift cam for a dragster
or something in between, Andrews Products can supply it. All of our
cams for these engines are computer designed and precision ground from
alloy steel billets. The rocker arm ratios are: Shovel: 1.42, Pan: 1.50,
Knuckle: 1.00, UL80: 1.00.
SHOVEL TOURING AND
PERFORMANCE CAMS
|
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|
Andrews |
Year |
Grind |
Timing(*) |
Duration 0.053 .0.020 |
Shovel
|
Pan
|
TDC
|
Application
|
|
| STOCK |
(Front
cyl)
|
H
|
-06/46
44/20 |
220
244 |
256
282 |
0.390
0.390 |
0.412
0.412 |
0.051
0.176 |
Stock H/D front cylinder timing listed for comparison. Later stock "S" grind cams have similar specs. |
STOCK |
(Rear
cyl)
|
H
|
14/38
44/20 |
232
244 |
274
282 |
0.390
0.390 |
0.412
0.412 |
0.129
0.176 |
Stock H/D rear cylinder timing listed for comparison. Later stock "S" grind cams have similar specs. |
| 212011 212020 212030 |
(48-69)
(70-77) (78-84) |
J
|
21/41
41/21 |
242
242
|
292
292 |
0.405
0.405 |
0.425 0.425 |
0.154
0.154 |
Mild street: Pans and Shovels, smooth idle, more power through RPM range. Bolts in with no head work. |
| 212270 212280 212290 |
(48-69)
(70-77) (78-84) |
A
|
21/43
|
244
244 |
296
296 |
0.450
0.450 |
0.470
0.470 |
0.156
0.156 |
Street/drags: Bolts into Shovels (except '80-'81) with no head work. More mid-range and high end power. Idle un-affected. (Head setup req'd on '80 & '81). (See note 1.) |
| 212130 212140 212150 |
(48-69)
(70-77) (78-84) |
1
|
16/36
36/16 |
232
232 |
288
288 |
0.427
0.427 |
0.450
0.450 |
0.098
0.098 |
This is the low compression piston version of an "A" grind cam for 74 - 80 engines with 7.5 to 1 pistons. |
| 212330 212340 212350 |
(48-69)
(70-77) (78-84) |
2
|
15/35
35/15 |
230
230 |
288
288 |
0.490
0.490 |
0.512
0.512 |
0.098
0.098 |
Back in our catalog by popular demand. Low compression version of a "B" grind cam. More power through RPM range for engines with 7.5 pistons. |
212360 212370 212380 |
(48-69)
(70-77) (78-84) |
B
|
26/50
50/26 |
256
256 |
298
298 |
0.485
0.485 |
0.507
0.507 |
0.182
0.182 |
Street/drags:
Much more mid-range and high end power. Idle smoothness unaffected. THE cam for modified 74/80 inchers and small strokers. Spring spacing required. |
212510 212520 212530 |
(48-69)
(70-77) (78-84) |
6
|
32/56
56/32 |
268
268 |
325
325 |
0.510
0.510 |
0.535
0.535 |
0.190
0.190 |
Hotter version of B grind. Great street cam especially for 84/88 inch strokers: maximum torque available from 2500 to 6500 rpm. |
| 212600 212610 212620 |
(48-69)
(70-77) (78-84) |
C
|
37/61 61/37 |
278
278 |
318
318 |
0.525
0.525 |
0.550
0.550 |
0.234
0.234 |
Best production cam made for big street engines. Strokers from 84 to 96 inches will really turn on this cam. Broad torque range pulls from 2000-7000+ rpm. |
212965 |
(36-47)
|
N(2)
|
13/41
44/16 |
234
240 |
270
276 |
0.348
0.348 |
0.089
0.105 |
---
--- |
Stock Knuckle replacement cam. For stock motors and restorations, this is the cam to use. |
| 212970 |
(36-47)
|
S(2)
|
27/55
55/27 |
262
262 |
308
308 |
0.370
0.370 |
0.130
0.130 |
---
--- |
Bolt-in Knuckle performance cam for stock motors, smooth idle, strong pull to 6000 rpm. This cam is the Knuckle equivalent of a “B” cam in a shovel motor. |
| 212980 |
(36-47)
|
K(2)
|
27/55
55/27 |
226 |
308 |
0.370 |
0.130
0.130 |
---
--- |
Knuckle
performance cam for stroked motors, strong pull 6000 rpm. The 'K' is the Knuckle equivalent of a “C” cam. |
Note (1); 1980
and 1981 engines: The height of original stock H/D valve guides restricts
spring travel (and cam lift) to .430 or less!
Note (2); Knuckle cam bearings are ground to .8115 to fit stock bushings.
(*) Timing listed at .053 cam lift.
(**) TDC Shovel lift listed: TDC Pan lift will be 5% higher!
Engine & Primary
Drives - Page 7
of 12
