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Street Race Truck More... The Toolbox
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$296.99
$293.99
COMP Cams 31-601-8 Thumpr Hyd. Roller Camshaft, Ford S/B
COMP Cams 31-601-8 Thumpr Hyd. Roller Camshaft, Ford S/B

COMP Cams 31-601-8 Thumpr Hyd. Roller Camshaft, Ford S/B

289 Ford Small Block V8, 302 Ford Small Block V8, Hydraulic Roller Tappet Camshaft Type

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COMP Cams 31-601-8 Thumpr Hyd. Roller Camshaft, Ford S/B
COMP Cams 31-601-8 Thumpr Hyd. Roller Camshaft, Ford S/B
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We estimate this item will ship on or before December 21st.
Part # 282316018
$293.99
$296.99
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Important Messages:

  • This item ships directly from the manufacturer. It may take an additional 3 business days for COMP Cams to ship this item.
  • Get FREE shipping when your order includes this item and exceeds $99! Ground shipping only in the contiguous US.
  • This item ships via Ground Shipping only. Expedited and Air shipping options are not available.

Details

Camshaft Type:
Hydraulic Roller Tappet
RPM Range:
2200 to 5900
Intake Duration:
291
Exhaust Duration:
311
Lobe Separation:
107 °
Grind Number:
291THR7
Intake Duration (.050" Lift):
235
Exhaust Duration (.050" Lift):
249
Intake Valve Lift w/ Rocker Arm Ratio:
0.54"
Exhaust Valve Lift w/ Rocker Arm Ratio:
0.526"
MFG. Part #:
31-601-8
GTIN Code:
036584212058
External Ignition Box Required:
No
Valve Springs Required:
Yes
Sold in Quantity:
Each

Info

COMP Cams Mutha' Thumpr 291THR7 Retro-Fit Hydraulic Roller Camshaft for Small Block Ford (289-302 Firing Order).

Ford 221-302 c.i. 8 cyl. 1963-1995 (Includes 221, 260, 289 & 302). Mutha' Thumpr-High performance street/strip, needs 9:1 compression, 2500+ stall, intake, gears and headers, rough idle. Thumpr Retro-Fit Hydraulic Roller Camshaft. All COMP Cams Camshafts are manufactured to the strictest tolerances. Rigorously tested and checked for quality.

  • Three unique cam designs for each application that deliver excellent horsepower gains & broad torque curve; perfect choice for muscle cars & street rods
  • Early intake valve opening & long exhaust duration create optimum overlap for powerful, hard-hitting exhaust note
  • Best with aftermarket converters & more rear gear

Application

1963-85 Ford 289-302
Some parts are not legal for use in California or other states with similar laws/regulations

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  • The art of selecting a camshaft that performs right in your street rod may become easier with experience, but the choice is less of a guessing game once you have a few of the basics, found in this latest article from Speedway.
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