WR 290 Chevy BB Heads 1 Par

12,995.00 kr

WR Chevy BB Heads 290 cc Levereras kompletta med ventiler , fjädrar, guide plates och vipparmsbultar

Slutmonterade och kvalitets kontrollerade av oss

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Beskrivning

WR BBC 290cc toppar specifications

Specifications & Features:
Material A356.2 Aluminum
Intake Port Volume 290cc
Intake seat size 2.25 OR 2.30
Exhaust seat size 1,88
Intake Port Dimension 2.030″H x 1.830″W x1/2 Radius
Intake Port Location Stock
Exhaust Port Volume 135cc
Exhaust Port Dimension 1.770″H x 2.010″ W
Exhaust Port Location .375″ Raised
Combustion Chamber Size 112cc
Valve Cover Bolt Pattern Perimeter Bolt
Valve Angle 24°/4° Int, 15°/4° Exh
Valve Spring Pocket Diameter 1.725″ O.D
Max Valve Spring Pocket Machining 1.750″ O.D
Deck Thickness .750″
Minimum Bore Diameter 4.250″
Flat Mill .006″ per cc/ Maximum 102cc
Angle Mill .009″ per cc/ Maximum 97cc
Note:Angle mills might require a .120″ Thick intake gasket.

Flödes Värden Utfört @ 28 ” vatten på vår FlowLab 520 Borr 4,230
.200 .300 .400 .500 .600
Int 172 246 288 318 345
Exh 142 183 216 230 253

Minimum Cross Sectional Area 2.895 sq. in.
Spark Plug Dimensions 14mm x .750″ w/Gasket Seat.

Rekommenderade komponeter som kan köpas till:
11/32″ Intake Valve, 2.250″ x 5.500″ O.A.L
11/32″ Nail Head Exhaust Valve, 1.880″ x 5.450″ Overall Valve Length
Racing Springs#1940 1.550″ O.D. Hydraulic Roller Dual Valve Spring, 175 lbs. on seat,
.725″ maximum lift, 473lbs @ .600 lift, Max RPM 6500-6700
Racing Spring 1.550 O.D. Solid Roller Valve Spring, 220lbs on seat, .710″ Maximum
Lift, Max RPM 7200-7400 (upgrades available)
Manley 10° Steel Retainers 1.500″ O.D x 1.120″I.D x .705″ I.D
10° 11/32″ Valve Locks with lashcap recess
ARP 7/16″ Rocker Exhaust Studs
ARP 7/16″ Rocker Intake Studs
3/8″ Guide Plates
11/32″ Viton Valve Seals
Hardened Valve Spring I.D Locator 1.550″ O.D x .780″ I.D
Intake Valve Seats 2.450″ O.D x 1.950″ I.D x .375″ Deep
Exhaust Valve Seats 2.000″ O.D x 1.580″ I.D x .375″ Deep
11/32″ Intake Bronze Valve Guides .502″ O.D x 2.10″ O.A.L
11/32″ Exhaust Bronze Valve Guides .502″ O.D x 2.25″ O.A.L
Recommended Components:
Intake Port Gasket
Important: Do not port match your intake manifold to Fel-Pro gasket as it does not precisely fit the heads.
Exhaust Port Gasket
Head Gasket, Fel-Pro #1047 (Mark V and VI)
Head Gasket,, Fel-Pro #1017-1 (Mark IV)
Head Bolts, ARP 135-3703 (Mark IV)
Head Bolts, ARP 135-3707 (Mark V)
Head Studs, ARP 235-4713
Head Bolt Washers, Manley
Stud Girdle
7/16 Stud Mount Rocker Arms – 1.7 Ratio (For Optimized Geometry)
1.7 Shaft Mount Rocker Arms T&D
Suggested Manifold Victor Jr
Suggested Manifold RPM Performer

Spark Plug Starting Range Autolite 3924

Mer information

Vikt 35 kg
Dimensioner 63 × 35 × 26 cm

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