Howards Cams, Rattler Retro-Fit Hydraulic Roller Camshaft, Ford SB, 243/251@ .050, .611/594, 109 LS

Howards Cams Rattler Hydraulic Roller Camshaft
Rattlers cams are for street enthusiasts who want the classic exhaust sound, but also want true performance to go with it. These camshafts offer performance that just doesn’t thump around. They give you a the performance and throttle response you expect from a performance cam. Don’t let the others fool you, sound is not everything. If you want both sound and performance, you need a Howards Cams Rattler. The best of both worlds. 
Note: To get the best exhaust tone, you should use a good dual exhaust system without a cross-over. A cross-over will add minor performance, but mellow the exhaust tone. 

  Manufactured on Dedicated High Precision Machines
  Held to Strict Tolerances
  High grade quality cores
  Rockwell Tested Ensuring the Highest Quality

Part Type: Camshaft
Application: Ford 351C/M-400 1970-1983

Ignition Firing Order: OE (1-3-7-2-6-5-4-8)

Cam Style: Hydraulic Roller

Basic RPM Range: 2400-6200

Manufacturers Description: Big Daddy Rattler, Rough idle. Pro street or street/strip. Needs 9.5:1 compression 2800+.

Intake Duration @ .050": 243

Exhaust Duration @ .050": 251

Advertised Intake Duration (@ .006"): 296

Advertised Exhaust Duration (@ .006"): 304

Intake Valve Lift with OE Rocker Ratio (1.73): .611"

Exhaust Valve Lift with OE Rocker Ratio (1.73): .594"

Intake Lobe Lift: .353"

Exhaust Lobe Lift: .343"