Holden V8 304/355 Hydraulic Carby — Crow Cams 4921-8

Crow Cams Holden V8 304/355 Hydraulic Carby

$610.36
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Holden V8 304/355 Hydraulic Carby — Crow Cams 4921-8

Crow Cams Holden V8 304/355 Hydraulic Carby

$610.36

Holden V8 304/355 Hydraulic Carby — 4921-8

Hot street cam with a mild idle and a wide power band. Needs headers, carby, ignition, comp & hi stall

Camshaft specifications

Supplier part number 4921-8
Engine / head family Holden V8 with VN–VT-style cylinder heads
Operating range 2700 - 5800 rpm
Advertised duration — inlet / exhaust 276° / 284°
Duration at 0.050 inch — inlet / exhaust 227° / 234°
Valve lift at 1.65 rocker ratio — inlet / exhaust .536'' / .556''
Lobe separation angle 108°
Hot lash — inlet / exhaust HYD / HYD

Supplied contents

One camshaft. Lifters, springs, retainers, locks, seals and drive hardware are separate unless expressly included in an agreed package.

Profile-specific fitting requirements

Performance valve springs are required. Performance spring retainers are required. For an automatic transmission, Crow specifies converter stall at or above the lower end of the cam’s operating range. For flat-tappet installation, Crow recommends two bottles of ZDDP additive: one for run-in and one for the first oil change. Follow Crow’s current run-in procedure and the product dosing instructions.

Companion parts listed for this profile

These are separate supporting components and may include alternative spring or hardware choices. BBT can check which combination is required; do not order every listed option as one package.

  • CRHL8167 — Holden V8 Roller Rockers
  • 4845-16 — Single Valve Springs with Damper - Set of 16
  • GP304 — Holden EFI V8 Guide Plates
  • CS8308 — Holden V8 Timing Chain Set
  • 11717-16 — Holden V8 Chrome Moly retainers for single spring - Set of 16
  • CST100940 — Rocker Studs 7/16" Heads to 7/16" Rocker
  • ZDDP-2 — Dura Cam ZDDP Oil Additive - 2 pack
  • 4134-16 — Square Groove +.050" Machined Valve Locks - Set of 16 pairs
  • KG819V-16 — Holden Viton O-Ring Valve Stem Seals
  • DG4 — Holden V8 Oil Pump Gear
  • DG8 — Holden V8 Distributor Gear

Contact BBT for any companion part without a product link.

Installation and BBT support

Confirm the actual engine capacity, cylinder-head design and induction system before ordering. The installer must check cam timing, piston-to-valve clearance, spring installed height, coil bind, retainer-to-seal clearance, pushrod length and rocker geometry. Hydraulic preload or mechanical lash must match the selected profile. BBT can help assemble the engine-specific package and arrange installation and calibration.

Product System

  • Engine Parts

Vehicle Fitment

  • Holden Commodore Vn Vr 5 0 Efi V8
  • Holden Commodore Vs 5 0 Efi V8

Confirm chassis, engine, drivetrain and production-year compatibility before ordering.

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