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Viper Cyclone

Please note prices are subject to change (30.03.23)

Viper CYCLONE Hydraulic Camshaft

Currently unavailable 03.03.23

Designed for 3.9 Hot-wire Injection engines.

Viper Cyclone DW252

DW252 Viper Cyclone Hydraulic Camshaft

Good for most applications including automatic transmission.

Worth an extra 26 hp over a standard engine.

If the cylinder block and cylinder head faces have not been heavily machined and the valve guides are fitted to the correct length, then this cam should bolt straight in.

Use 3 degrees extra ignition advance and a "cone" style free flowing air cleaner.

In dyno tests, + 26 bhp extra obtained at 5000 rpm with an extra 27 ft lbs of torque at the same rpm.

DW252 specification   

RPM Range: 1800-5200

Idle – 5500 rpm

Intake lobe centre 108 degrees ATDC (After Top Dead Centre)

Lobe separation 108 camshaft degrees

Duration @ 0.050” lift: 206 degrees (inlet) 206 degrees (exhaust)

Cam lobe lift: 0.270” inlet and exhaust

Lift: 1.60 Rockers Inlet: 0.433” Exhaust: 0.433”

Please note:

Comp Cams running in oil (BY1590 x 6) and Comp Cams Break-In oil additive (BY159 Extra Zinc) required to protect the camshaft from damage during running in period). Non-compliance will negate the warranty.

Cyclone camshaft specification

Just the Camshaft

DW252 Viper CYCLONE Hydraulic Camshaft  including Cam Lube & cam bolt

Cam Kit (1)

  • DW252 Viper CYCLONE Hydraulic Camshaft  including Cam Lube & cam bolt

  • Comp Cams Running in oil (x 6)

  • Comp Cams Break-in Oil Additive (x 1)

Comp Cams Break-In oil 1qt
Comp Cams Break-In additive

Cam Kit (2)

  • DW252 Viper CYCLONE Hydraulic Camshaft  including Cam Lube & cam bolt

  • Comp Cams Running in oil

  • Comp Cams Break-in Oil Additive

  • Std. Hydraulic tappets/lifters/followers (set of 16)

Lifters made in USA

Cam Kit (3)

  • DW252 Viper CYCLONE Hydraulic Camshaft  including Cam Lube & cam bolt

  • Comp Cams Running in oil

  • Comp Cams Break-in Oil Additive

  • Hydraulic tappets/lifters/followers (set of 16)

  • Cloyes “Street True-Roller” set. Cast iron cam gear, Induction heat treated, billet steel crank gear [3 key ways], True-roller chain with .250” rollers. Made in the USA. (BY9-1132)

  • Inlet manifold (valley) gasket Premium

  • Rubber end seals

Other gaskets included e.g. timing cover, water pump. Please give engine type/vehicle model when ordering

Cloyes duplex true timing kit

Cam Kit (4)

  • DW252 Viper CYCLONE Hydraulic Camshaft  including Cam Lube & cam bolt

  • Comp Cams Running in oil

  • Comp Cams Break-in Oil Additive

  • Hydraulic tappets/lifters/followers (set of 16)

  • Cloyes “Street True-Roller” set. Cast iron cam gear, Induction heat treated, billet steel crank gear [3 key ways], True-roller chain with .250” rollers. Made in the USA. (BY9-1132)

  • Preload Shim kit (DW400)

  • ​Standard valve springs fitted length 1.59" set of 16 (CX2284)

  • Shim kit (DW400)

  • Inlet manifold (valley) gasket Premium OEM  (LKJ500020G)

  • Rubber end seals (ERR7283)

  • Rocker Cover gaskets Premium (LVC100260G)

Other gaskets included e.g. timing cover, water pump. Please give engine type/vehicle model when ordering

Warranty

Comp Cams running in oil (BY1590 x 6) and Comp Cams Break-In oil additive (BY159 Extra Zinc) required to protect the camshaft from damage during running in period). Non-compliance will negate the warranty.

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