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Technical Articles for Part Number HRS-120406-10
Howards Cams Retrofit Hydraulic Roller Camshafts 120406-10
Part Number: HRS-120406-10
Howards Cams Retrofit Hydraulic Roller Camshafts
Camshaft, Hydraulic Roller Tappet, Advertised Duration 288/294, Lift .618/.618, Chevy, Big Block, Each
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Estimated Ship Date: Dec 30, 2026 Would you rather pick it up?
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Overview
Brand:
Manufacturer's Part Number:
120406-10
Part Type:
Product Line:
Summit Racing Part Number:
HRS-120406-10
UPC:
840793105465
Cam Style:
Hydraulic roller, Retro-fit
Camshaft Use:
Street/Strip
Camshaft Manufacturers Description:
Fair idle, street/strip, best in 496-540 c.i.d. Nice midrange power, 2,600+ stall.
Basic Operating RPM Range:
2,600-6,400
Intake Duration at 050 inch Lift:
235
Exhaust Duration at 050 inch Lift:
241
Duration at 050 inch Lift:
235 int./241 exh.
Advertised Intake Duration:
288
Advertised Exhaust Duration:
294
Advertised Duration:
288 int./294 exh.
Intake Valve Lift with Factory Rocker Arm Ratio:
0.618 in.
Exhaust Valve Lift with Factory Rocker Arm Ratio:
0.618 in.
Valve Lift with Factory Rocker Arm Ratio:
0.618 int./0.618 exh.
Lobe Separation (degrees):
110
Camshaft Gear Attachment:
3-bolt
Remanufactured:
No
Computer-Controlled Compatible:
No
Valve Springs Required:
Yes
Quantity:
Sold individually.
Howards Cams Retrofit Hydraulic Roller Camshafts
Howards Cams retrofit hydraulic roller camshafts offer more lift and more power for less money. These street performance grinds are perfect for those wanting to upgrade to hydraulic roller cams. Manufactured using the highest grade race-quality cores, Howards precision-grinds their cams to provide the quality and performance that you want at a reasonable price. Overhaul your valvetrain for mild to wild street performance with Howards Cams retrofit hydraulic roller camshafts. Hundreds of models are available for a wide range of vehicles from the 1950s and up.
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Instructions & Calculators
Some parts are not legal for use in California or other states with similar laws / regulations
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