The FireBall® Series cams are computer designed camshafts. They are manufactured to the industry’s highest quality standards, and are available in various grinds. Most can be used with stock valve springs, in stock or modified engines. Best of all they are very competitive in price, and are backed by a one year limited warranty.  For 1966-84 Harley-Davidson® Shovelhead® "Big-Twin®"
 Shovelhead® Fireball® & Panhead® Fireball®  series camshafts Duration .053"
Open/Close
Intake Exhaust
Gross Valve Lift @TDC
1.425 :1 Rocker Ratio
Intake Exhaust
 
Original Equipment Replacement Hydraulic 220 Frt. 245
0/40  53/12

233 Rear 245
20/33  53/12

.389" .391"
(.076" .131")

.391" .390"
(.076" .131")

Stock specifications for restoration or replacement of the stock camshaft. Notice that the front and rear cylinders each have their own cam profile.
83385 1-0010 1970-77
83386 1-0011 1978-84
 
Hydraulic - Bolt - In

Fireball 300H

248 248
24/44 44/24
.455" .455"
(.180" .185")
Broad power range for streetable performance. Works well with stock compression or increased up to 10:1. Low and mid range improvement. Does not require valve spring change. Works well with stock carb and exhaust or performance parts.
83235 1-0100 1966-69
83236 1-0101  1970-77
83237 1-0102  1978-84
 
Mechanical - Bolt - In

Fireball 296A

244 244
20/44 44/20
.455" .455"
(.154" .154")
Broad power range for streetable performance. Works well with stock compression or increased up to 10.5:1. Will increase torque for heavy bikes with heavy loads. Does not require valve spring change. Works with either stock carb and exhaust or performance parts.
83239 1-0103   1966-69
83240 1-0104  1970-77
83241 1-0105  1978-84
 
Mechanical - Performance Cam

Fireball 308B

256 256
26/50 50/26
.490" .490"
(.184" .184")
Can be used with stock compression but works well with 10.5:1 compression ratio. Mid range and top end improvement. Heads must be clearanced and may require valve spring change to install. Works well with performance exhaust, carb and cylinder head work.
83244 1-0107 1970-77
83245 1-0108   1978-84
 
 
Shovelhead® Hydraulic series camshafts
For 1966-84 Harley-Davidson® Shovelhead® "Big-Twin®"
 Shovelhead® Hydraulic series camshafts Duration .053"
Open/Close
Intake Exhaust
Gross Valve Lift @TDC
1.425 :1 Rocker Ratio
Intake Exhaust
 
 Hydraulic Bolt In

H288B

244 244
22/42 42/22
.450” .450”
(.178" .182")
Broad power range for streetable performance. Works well with stock compression or increased up to 10:1. Low and mid range improvement. Does not require valve spring change. Will increase torque for heavy bikes with heavy loads. Stock carb and exhaust or performance parts may be used.
83248 1-0021  1970-77
83249 1-0022 1978-84
 
Hydraulic Bolt In

 H288B-2B

244 254
18/46 51/23
.450” .450”
(.157" .188")
Dual pattern cam that will deliver broad power range for performance and street use. Will increase horsepower through the RPM range. Does not require valve spring change. Can be used with stock compression or increased up to 10.5:1. Stock carb and exhaust or performance parts may be used.
83251 1-0024 1970-77
83252 1-0025 1978-84
 
Hydraulic Performance Cam

 H298B-2B

254 264
25/49 62/22
.450” .450”
(.195" .182")
Mid range and top end improvement. Heads must be clearanced. Works well with increased compression ratio up to 11:1 and with performance exhaust, carb and cylinder head work.
83254 1-0027 1970-77
83255 1-0028 1978-84
 
 
Shovelhead® Mechanical series camshafts
For 1966-84 Harley-Davidson® Shovelhead® "Big-Twin®"
 Shovelhead® Mechanical  series camshafts Duration .053"
Open/Close
Intake Exhaust
Gross Valve Lift @TDC
1.425 :1 Rocker Ratio
Intake Exhaust
 
 Mechanical Performance Cam

H298B

262 262
29/53 53/29
.450” .450”
(.200" .200")
Works well with increased compression ratio or increased cubic inch. Can be used with stock valve springs but must clearance the heads. Requires performance carb and exhaust. Mid range and top end improvement.
83260 1-0057 1970-77
83261 1-0058 1978-84
 
 Mechanical Performance Cam

H310B

266 266
29/57 53/33
.525” .525”
(.217" .217")
High performance street or drags. Must have increased compression ratio or cubic inch. Heads must be clearanced and valve spring change required. Shows off performance cylinder head work. Performance carb and exhaust required.
83263 1-0060 1970-77
83264 1-0061 1978-84
 
 Mechanical Performance Cam

H304B

268 268
32/56 56/32
.485” .485”
(.217" .217")
High performance street. Must have increased compression ratio or cubic inch. Heads must be clearanced and valve spring change required. Reliable performance. Mid range and top end cam.
83265 1-0062 1970-77
83266 1-0063 1978-84
 
 Mechanical High Performance Cam

H320B

276 276
36/60 64/32
.550” .550”
(.245" .228")
Must have increased cubic inch for best results. Can be used for street use with maximum performance motor. Must have heads clearanced and valve spring change required. Performance carb and exhaust only.
83268 1-0066 1970-77
83269 1-0067 1978-84
 
 Mechanical Race Cam

H330B

286 286
41/65 73/33
.575” .575”
(.274" .234")
Drag Cam for large cubic inch engines. Head work required for results. Race only.
83271 1-0069 1970-77
83272 1-0070 1978-84