Page 57 - 2021-22_EngineCatalogAP

283-400 (Cont.)
Engine Quest Vortec Bolt-On Performance for 350 CID
All EQ performance cylinder heads have AS-CAST combustion chambers, Dura-Bond exhaust seats, 3-angle valve job, thick deck faces for angle milling, phosphor bronze intake and exhaust guides, are machined for guide plate use, and feature raised intake runner ports for increased performance. Sold individ- ually.
Part No.
ENQCH350C ENQCH350I
Description
Bare Head, Vortec
Bare Head,
IMCA Spec Head, UMP Legal
Intake Runner
170cc 176cc
Comb. Plug Chamber Angle
64cc Straight 76cc Straight
Valve Angle
23° 23°
Intake Valve
1.940" 1.940"
Exhaust Valve
1.500" 1.500"
FTC101500
Exhaust Valve
1.600" 1.600" 1.600" 1.600"
Exhaust Valve
1.500" 1.550" 1.550"
FLOTEK Aluminum Cylinder Heads
Flo-Tek aluminum cylinders heads feature high-flow 180cc intake runners & 62cc exhaust runners. Assembled versions include bronze valve guides, 5-angle valve job, stainless intake and exhaust valves, hardened locks and retainers, PC valve seals, 3/8” rocker studs, and guideplates. Available in straight or angled plug design. Sold individually.
Part No.
FTC101500 FTC101505 FTC102500 FTC102505 †
Description
Cylinder Head, Bare Head Cylinder Head, Assembled Cylinder Head, Bare Head Cylinder Head, Assembled
Intake Runner
180cc 180cc 180cc 180cc
Comb. Plug Chamber Angle
64cc Angle 64cc Angle 64cc Straight 64cc Straight
Valve Angle
23° 23° 23° 23°
Valve Angle
23° 23° 23°
Intake Valve
2.020" 2.020" 2.020" 2.020"
Intake Valve
1.940" 2.000" 2.000"
† FTC102505 is available with 1.560" dia. flat tappet springs assembled. Add an FT at the end of the part number.
GM Cast Iron Vortec Cylinder Head
The Vortec head significantly outflows the non-Vortec replacement head and offers a 20-40 horsepower increase over earlier cast iron heads. They will fit 1955 and after small-blocks except for the LT1/LT4 engines. (These heads require Vortec-specific intake manifolds). Sold individually.
Part No.
GMP12691728 GMP19331470 GMP19331472
Description
Assembled Cast Iron Vortec Head Assembled - 1.320" Single Valve Spring Assembled - 1.320" Single Valve Spring
Intake Runner
170cc 185cc 225cc
Comb. Plug Chamber Angle
64cc Straight 66cc Straight 66cc Straight
Racing Head Service Aluminum “Pro Action” Head
High-flow 23° aluminum cylinder heads. Each head is fitted with bronze wall valve guides and hardened exhaust seats. Accepts standard or late model center bolt valve covers. Available with 200cc, 220cc, or 235cc intake runner volumes and are sold indi- vidually as bare castings.
Intake Part No. Description Runner
Comb. Chamber
Plug Angle
Straight
Valve Angle
23°
Intake Valve
2.020"
Exhaust Valve
1.600"
RHS12054 “Pro Action” Aluminum Head, Bare Head 200cc
64cc
CYLINDER HEADS
CHEVROLET SMALL BLOCK
2021-22 ENGINE BUILDER CATALOG 55