1948-84 Big Twin Cams
10-8252,10-8253,10-8254
Crane Cams
  SPECIFICATIONS    
DURATION @ .053” GROSS VALVE  
OPEN/CLOSEa LIFT SERIES &
INT. EXH. INT. EXH. GRIND
VT No. Price Year         NUMBER TYPE & APPLICATION
10-8252
$145.00 1948-69 248 248 .455b .455b Hydraulic HYDRAULIC - Bolt-in. Broad power range for streetable performance.Works
10-8253
$145.00 1970-77 24/44 44/24 .479c .479c 300H Fireball well with stock compression or increased up to 10:1. Low and mid range
10-8254
$145.00 1978-84           improvement. Does not require valve spring change.Works well with stock carb
    Cam lift at TDC: Int: .126” Exh: .130”* and exhaust or performance parts.
10-4380
$145.00 1948-69 244 244 .455b .455b Fireball MECHANICAL - Bolt-in performance throughout the power range. Also
10-4381
$145.00 1970-77 20/44 44/20 .479c .479c 296A recommended for increased torque in heavy bikes with heavy loads. No spring
10-4382
$145.00 1978-84           change required.Works well with stock carb and exhaust. Does not have Cranes
    Cam lift at TDC: Int: .108” Exh: .108”* multi-indexed gear. Replaces A.
10-4383
$115.00 1948-69 256 256 .490b .490b Fireball MECHANICAL - Performance cam. Can be used with stock compression but
10-4384
$145.00 1970-77 26/50 50/26 .516c .516c 308B works well with 10.5:1 compression ratio. Mid range and top end improvement.
10-4385
$145.00 1978-84           Heads must be clearanced and may require valve spring change to install.Works
    Cam lift at TDC: Int: .129” Exh: .129”* well with performance exhaust, carb and cylinder head work.
              Replaces B.
    244 244 .450b .450b Hydraulic HYDRAULIC - Bolt-in performance throughout the power range, Also recom-
10-4357
$145.00 1970-77 22/42 42/22 .474c .474c Hi-Roller mended for increased torque in heavy bikes with heavy loads. No spring
10-4364
$143.00 1978-84 Cam lift at TDC: Int: .125” Exh: .128”*H288B change required.Works well with stock carb and exhaust.
  1948-69 244 254 .450b .450b Hydraulic HYDRAULIC - Mild performance. Can be used with stock springs, carb and
10-4358
$145.00 1970-77 18/46 51/23 .474c .474c Hi-Roller exhaust or performance systems. Increased horsepower throughout RPM
10-4365
$143.00 1978-84 Cam lift at TDC: Int: .110” Exh: .132”* H288-2B range.
10-4352
$145.00 1948-69 254 264 .450b .450b Hydraulic HYDRAULIC - Performance can be used with performance type carb and
10-4359
$143.00 1970-77 25/49 62/22 .474c .474c Hi-Roller exhaust. Increased mid-range and top end horsepower. Check valve-to-valve
10-4366
N/A 1978-84 Cam lift at TDC: Int: .137” Exh: .128”* H298-2B clearance.
  1948-69 252 252 .450b .450b Hi-Roller MECHANICAL - Bolt-in mild performance. Can use stock springs, carb and
10-4361
N/A 1970-77 24/48 48/24 .474c .474c H298B exhaust. Increased mid-range and top end horsepower. No increase in com-
10-4368
N/A 1978-84 Cam lift at TDC: Int: .124” Exh: .124”* precision ratio required.
10-4353
N/A 1948-69 262 262 .450b .450b Hi-Roller MECHANICAL - Mild performance.Works well with high performance carb and
10-4360
$145.00 1970-77 29/53 53/29 .474c .474c H298B exhaust system. Can use stock springs, but check valve-to-valve clearance.
10-4367
N/A 1978-84 Cam lift at TDC: Int: .140” Exh: .140”*  
10-4356
$145.00 1948-69 266 266 .525b .525b Hi-Roller MECHANICAL - High performance street and drags. Increased compression
10-4363
N/A 1970-77 31/55 55/31 .553c .553c 310B ratio and/or cubic inches required. Must change valve springs and check
  1978-84 Cam lift at TDC: Int: .152” Exh: .155”* spring travel, piston-to-valve, and valve-to-valve clearances.
10-4355
$193.00 1948-69 268 268 .485b .485b Hi-Roller MECHANICAL - Streetable high performance. Increased compression ratio
10-4362
$145.00 1970-77 32/56 56/32 .511c .511c 304B and/or cubic inches required. Must change valve springs and check spring
10-4369
$145.00 1978-84 Cam lift at TDC: Int: .152” Exh: .152”* travel, piston-to-valve, and valve-to-valve clearances.
10-4371
$145.00 1948-69 276 276 .550b .550b Hi-Roller MECHANICAL - Street and drag cam for high performance engines. Increased
10-4372
N/A 1970-77 36/60 64/32 .579c .579c 320B cubic inches required for best results. Head work required for proper spring
  1978-84 Cam lift at TDC: Int: .172” Exh: .160”* travel, piston-to-valve, and valve-to-valve clearances.
10-4374
$79.00 1948-69 286 286 .575b .575b Hi-Roller MECHANICAL - Drag cam for large cubic engines. Head work required for
10-4375
$79.00 1970-77 41/65 73/33 .606c .606c 330B proper spring travel, piston-to-valve, and valve-to-valve clearances, also to
10-4376
$79.00 1978-84 Cam lift at TDC: Int: .192” Exh: .164”* insure maximum performance.
              Camshafts having over .450” valve lift in 1948-69 engines, will need to have front
              exhaust lobe-to-circuit breaker drive gear clearance checked.
      Camshafts having over .450” valve lift in 1948-57 engines, will need to have front intake lobe-to-case clearance checked.
      * To convert cam lift to valve lift, multiply the cam lift figure by the rocker arm ratio: Shovelhead - 1.425; Panhead - 1.5.
      a Opening and closing figures for camshafts with the multiple keyway gear are based on the gear installed in the “0” position.
      b Gross valve lift for Shovelhead with 1.425 rocker arm ratio.
      c Gross valve lift for Panhead with 1.5 rocker arm ratio.
Note: All Crane Cams are shipped with red cam gear.
Sifton Cam Bushing Kits. BT type includes cam & gear shaft bushings/ bearings with lock pins & thrust plate.
VT No. Price Year
10-8264
$62.00 1936-53
10-8263
$62.00 1954-57
10-8262
$62.00 1958-69
VT No. Price Year
10-8261
$54.00 1970-72
10-8260
$57.00 1973-92
10-8264 10-8262
12-0316
10-8260
Torrington Cam Needle Bearings. Genuine Torrington replacements, features full compliment roller design. OEM# 9058. Fits 1958-99 Big Twin.
VT No. Price
12-0316
$16.00
10-8263 10-8261
461

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