World Products 042670-1 - World Products SB-Chevy S/R Torquer Heads
World Products #955-042670-1SB-Chevy S/R Torquer Cast Iron Cylinder Head |
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World Products 042670-1 - World Products SB-Chevy S/R Torquer Heads Details
SB-Chevy 327-400ci S/R Torquer Cast Iron Cylinder Heads
1.250'' single spring, 100# @ seat, .560'' max. lift, 2.02 x 1.600 valves, 170cc intake runner. Material: High density cast iron Included In Assembly: Manley Street Flo stainless steel valves (1-piece forged, with undercut stems and swirl-polished heads), ring and band valve seals, valve springs, Manley 7° chrome moly retainers, keepers.
Valve Seats: Integral intake,hardened steel exhaust
Valve Size: 2.020'' x 1.600'' (1.940'' x 1.500'' for S/R Torquer 305)
Rocker Arm Studs: 3/8'' shank, screw-in style with hex shoulder furnished
Accessory Flange: Stock locations, 7-bolt universal pattern
Head Gaskets: Fel-Pro #1003 (265-350) or equivalent.
Puhshrods: OEM can be used. Hardened not required
Spark Plugs: Accepts 14mm-5/8'' .460'' reach tapered seat (Accel 274 or 276, AC-Delco 43TS or 44TS, Champion #670 or #802) or equivalent
Intake Gasket: Fel-Pro #1204 or #1256 or equivalent
Exhaust Gasket: Fel-Pro #1404 or #1405 or equivalent
Bolt-On Up To 30HP! An improved replacement for the factory Chevrolet 305-400ci cylinder head, World Products exclusive S/R Torquer series features 170cc intake runners and can provide up to a 30 HP increase over most OEM castings. Note, however, that these heads are accepted by many racing associations as ''stock'', and are 50-state emissions legal. S/R Torquer heads accept early and late model accessories. The valve seats are hardened to provide compatibility with unleaded gas. The S/R Torquer heads are available in 67cc and 76cc versions for engines up to 1986 and 76cc for 1987-later applications. They are designed to use 2.020'' intake and 1.600'' exhaust valves, and work well in engines from 302 to 400ci. World's S/R Torquer 305 cylinder heads come with 58cc combustion chambers, and are ideally suited for use on 262-307ci small blocks. Material: High density cast iron Included In Assembly: Manley Street Flo (-1 models) stainless steel 1-piece forged valves with swirl-polished heads, ring and band valve seals, valve springs, Manley 7° chrome moly retainers and keepers.
Valve Seats: Integral intake, hardened steel exhaust
Valve Size: 2.020'' x 1.600''
Rocker Arm Studs: 3/8'', screw-in with hex shoulder furnished
Accessory Flange: Stock locations, 7-bolt universal pattern
Head Gaskets: Fel-Pro 375-1003 or equivalent
Pushrods: OEM can be used, hardened not required
Spark Plugs: Accepts 14mm-5/8'' .460'' reach tapered seat (Accel 274 or 276, AC-Delco 43TS or 44TS, or equivalent)
Intake Gasket: Fel-Pro 375-1204 or 375-1256 or equivalent
Exhaust Gasket: Fel-Pro 375-1404 or 375-1405 or equivalent
