CYLINDER HEADS
GM LS Series (Cont.) GM Performance LS Aluminum Heads LT1 GM Performance LS3 CNC-Ported cylinder head flows more than 350 CFM at .600" intake lift bench flowing 10 percent more than the stock casting. Features include high- efficiency 68cc combustion chambers, CNC'd rectangular port 276cc intake runners, CNC D-port 92cc exhaust ports, 2.165" stainless hollow stem intake valves, 1.59" stainless solid exhaust valves, beehive springs, valve locks, spring retainers and valve stem seals. Fit any LS engine with cylinder bores of 4.00" or larger. Sold Individually. Part No. Description
GMP88958758
Intake Runner Comb. Chamber Valve Angle Intake Valve Exhaust Valve
GM LS3, Assembled, CNC Ported, .550" Max Lift, 4.00" And Larger Bore
GMP88958758
276cc
92cc
2.165"
1.590"
1.600"
RHS Pro-Elite/Big Port Pro-Elite LS7 CNC-Ported Aluminum Head for LS1/LS2 Engines RHS Pro-Elite small bore LS7 cylinder heads deliver superior airflow through raised (.220") intake runners which fits both stock and aftermarket LS7 intake manifolds and valve train com- ponents. Features 355-T6 aluminum, CNC-machined rectangular intake and .100" raised D-Port exhausts and combustion chambers, .750" thick deck surface increase clamping capacity greatly improves head gasket retention in high horsepower and boosted applications. The .0400" raised rail allows for use with aftermarket rockers. Requires eight LS3 offset intake rockers, and eight LS1 style exhaust rock- ers and stands Will work with standard 4-bolt OEM LS 5.7L to 6.0L (LS1/LS6/LS2/LQ4/LQ9) blocks down to 3.900" bore or aftermarket 6-bolt RHS and GMP LSX blocks . Sold individually.
Intake Runner
Comb. Chamber
Plug Angle
Valve Angle
Intake Valve 2.100" 2.250"
Exhaust Valve
Part No.
Description
RHS54503 RHS54504
Pro-Elite Bare Head/Small Bore
266cc 307cc
69cc Angled 69cc Angled
12° 12°
1.575" 1.615"
Big Port Pro-Elite Bare Head/Large CID
Chevrolet “W” Engine 348-409 Edelbrock Performer RPM
EDE60819
Designed for 1961-65 Chevy 348/409 big-block, cylinder heads feature OEM port locations and valve angles for bolt-on convenience, 220cc intake and exhaust ports, improved port design, screw-in rocker studs and hardened guide plates. Part No. Description
Intake Runner Comb. Chamber Port Type Intake Valve Exhaust Valve
EDE60819 EDE60815
Assembled, CNC Ported
215cc 215cc
16cc 16cc
Stock Stock
2.190" 2.190"
1.720" 1.720"
Assembled w/1.55" Dia. Hyd. Roller Valve Springs
Chevrolet Big Block 396-454 AFR CNC Magnum Aluminum Cylinder Heads
AFR CNC Magnum aluminum cylinder heads feature stainless intake & exhaust valves, 10 degree locks and retainers and a competition 5 angle valve job. All heads are sold in pairs, completely assembled (unless specified as bare).
AFR2100-1
Intake Runner
Comb. Chamber
Port Type
Valve Angle
Intake Valve
Exhaust Valve
Part No.
Description
Magnum Heads, Assembled, Partially CNC Ported, CNC Bowl Blends Magnum Heads, Assembled. Partially CNC Ported, CNC Bowl Blends Magnum Heads, Assembled. CNC Chambers, CNC Bowl Blends Magnum Heads, Assembled, Partially CNC Ported, CNC Bowl Blends Magnum Heads, Assembled. Fully CNC Ported Magnum Heads Assembled. Fully CNC Ported
AFR2100-1 AFR2000 AFR2101
305cc 315cc 325cc 325cc 335cc 345cc 357cc 385cc
121cc Rect 121cc Rect
24°/15° 2.250" 1.880" 24°/15° 2.250" 1.880" 24°/15° 2.300" 1.880" 24°/15° 2.300" 1.880" 24°/15° 2.300" 1.880" 24°/15° 2.300" 1.880" 24°/15° 2.300" 1.880" 24°/15° 2.350" 1.880"
117cc
Rect
AFR2101-1
121cc Rect 121cc Rect
AFR2001
AFR2110
117cc
Rect
AFR2010-TI AFR2020-TI
Magnum Heads, Assembled. Fully CNC Ported Magnum Heads Assembled. Fully CNC Ported
121cc Rect 121cc Rect
2018 ENGINE BUILDER CATALOG
159
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