Page 212 - 2021-22_EngineCatalogAP

CYLINDER HEADS
RHS Pro ActionTM 24° Aluminum Head
RHS Pro Action 24° Rectangular Port Aluminum Head are designed for street/strip, drag
racing, marine, and pulling truck applications. Capable of making up to 1000 hp, the RHS
Pro Action head features "as cast" finished quality, refined water jacket design for improved thermal conductivity, and extra-thick deck faces to allow angle milling for compression, as well as hardened intake and radiused exhaust seats for use with all fuels. Sold individually.
SpeedmasterTM Cylinder Heads
Speedmaster Hydr-FT fully assembled aluminum cylinder heads are manufactured with
a gravity die casting process which creates a much more uniform, rugged, cylinder head. Available in both rectangular and oval port versions, assembled with 1.450" diameter dual valve springs, 3-angle machined valve seats, chrome moly valve spring retainers, positive stop valve seals, and bronze valve guides. Sold in pairs.
STREET PERFORMANCE/COMPETITION VALVES
Chevrolet Big Block 396-454
Brodix
Part No.
Description
Intake Runner
Comb. Chamber
Plug Angle
Port Type
Valve Angle
Intake Valve
Exhaust Valve
RHS11011
Bare Head, 135cc Exhaust Runner
320cc
119cc
Angled
Rect.
24°
2.250"
1.880"
Part No.
Description
Intake Runner
Combustion Chamber
Port Type
Intake Valve
Exhaust Valve
Max Lift
SPMPCE281.2031
BBC 320cc, Assembled
320cc
119cc
Rect.
2.250"
1.880"
0.550"
SPMPCE281.2034
BBC 305cc, Assembled
305cc
119cc
Oval
2.250"
1.880"
0.550"
Part No.
Description
Diameter
Length
Qty.
Exhaust Valves
BROBR81038
Stainless Steel, 11/32" Stem, Dished
1.880"
5.394"
1
BROBR81138
Stainless Steel, 11/32" Stem, Dished
1.880"
5.494"
1
BROBR81185
Stainless Steel, 11/32" Stem, Dished
1.850"
5.495"
1
Intake Valves
BROBR70225
Stainless Steel, .3136" Stem, Dished
2.250"
5.200"
1
BROBR81040
Stainless Steel, 11/32" Stem, Dished
2.250"
5.218"
1
BROBR81140
Stainless Steel, 11/32" Stem, Dished
2.250"
5.318"
1
BROBR81341
Stainless Steel, 11/32" Stem, Dished
2.300"
5.568"
1
BROBR81351
Stainless Steel, 11/32" Stem, Dished
2.350"
5.568"
1
BROBR81375
Stainless Steel, 11/32" Stem, Dished
2.375"
5.610"
1
BROBR81665
Stainless Steel, 11/32" Stem, Dished
2.450"
6.650"
1
Ferrea
Part No.
Description
Dia.
Length
Qty.
5000 Series Competition Valves
Exhaust Valves
FERF5010-8
High-Performance, 3/8"
1.725"
5.350"
8
FERF6128-8
Comp 6000, 3/8"
1.725"
5.350"
8
FERF5011-8
High-Performance, 3/8"
1.880"
5.350"
8
FERF5035-8
High-Performance, 11/32"
1.880"
5.425"
8
FERF6186-8
Comp 6000, 11/32"
1.900"
5.425"
8
Intake Valves
FERF5007-8
High-Performance, 3/8"
2.065"
5.221"
8
FERF5008-8
High-Performance, 3/8"
2.190"
5.221"
8
FERF5037-8
High Performance, 11/32"
2.190"
5.300"
8
FERF5009-8
High-Performance, 3/8" Undercut
2.250"
5.271"
8
210 2021-22 ENGINE BUILDER CATALOG
CHEVROLET BIG BLOCK