Page 263 - 2022-23 Auto Performance Drag Racing

SHP Cylinder Heads for SB Chevy
DRAG RACING
SHP cylinder heads combine the benefits of an economical price, the weight savings associated with aluminum heads, and full compatibil- ity with most off-the-shelf components. Cast from A356-T6 aluminum, heads feature standard valve angle, standard spacing, straight plug configuration, bronze valve guides and competition valve jobs. Offered with 180cc or 200cc intake runners, heads are sold individually as fully assembled castings.
Pro 1 Cylinder Heads for SB Chevy
Affordable aluminum cylinder heads with advanced airflow technology offer outstanding air flow with no additional port work. Choose from Pro 1 200cc, 215cc, or 230cc intake runners, or CNC-ported, 227cc and 245cc intake runner cylinder heads. Bare casting has a multi-angle performance valve job and bronze valve guides. Head is sold individually, bare or completely assembled.
CNC-Ported
Cylinder Head Parts Kit for SB Chevy
Dart cylinder head parts kits include one-piece, swirl-polished 21-2N stainless steel valves, dual valve springs, steel retainers, machined locks, PC valve seals, 3/8" rocker arm studs, and 5/16" guide plates. Same parts Dart uses in their complete assemblies.
Part No. Description
Pro 1 Cylinder Heads for LS
Although the Pro 1 for LS engines retains the OEM valve angles, OEM valve loca- tions, and accessory mounting holes, aluminum cylinder heads feature higher
air flow and improved combustion chambers for added horsepower. High-velocity 225cc heads provide increased throttle response, while larger 280cc heads are best suited to larger displacement engines. Heads are sold individually, bare or com- pletely assembled.
Part No.
Description
Intake Runner
Comb. Chamber
Intake Valve
Exhaust Valve
Valve Spring Dia./Type
DRT127121
Assembled
180cc
64cc
2.02"
1.60"
1.250"/Single
DRT127122
Assembled
180cc
64cc
2.02"
1.60"
1.437"/Dual
DRT127221
Assembled
180cc
72cc
2.02"
1.60"
1.250"/Single
DRT127222
Assembled
180cc
72cc
2.02"
1.60"
1.437"/Dual
DRT127322
Assembled
200cc
64cc
2.02"
1.60"
1.437"/Dual
DRT127422
Assembled
200cc
72cc
2.02"
1.60"
1.437"/Dual
Part No.
Description
Intake Runner
Comb. Chamber
Plug Type
Intake Valve
Exhaust Valve
Valve Spring Dia./Type
DRT11321111P
Assembled
200cc
64cc
Straight
2.02"
1.60"
1.250"/Single
DRT11510020P
Bare Casting
215cc
64cc
Angle
2.05"
1.60"
N/A
DRT11511122P
Assembled
215cc
64cc
Angle
2.05"
1.60"
1.437"/Dual
DRT11511123P
Assembled
215cc
64cc
Angle
2.05"
1.60"
1.550"/Solid/Roller
DRT11710040P
Bare Casting
230cc
64cc
Angle
2.08"
1.60"
N/A
DRT11711143P
Assembled
230cc
64cc
Angle
2.08"
1.60"
1.550"/Solid/Roller
DRT11721143P
Assembled
230cc
64cc
Straight
2.08"
1.60"
1.550"/Solid/Roller
DRT11970040P
Bare Casting
227cc
64cc
Angle
2.08"
1.60"
N/A
DRT11971143P
Assembled
227cc
64cc
Angle
2.08"
1.60"
1.550"/Solid/Roller
DRT11980060P
Bare Casting
245cc
66cc
Angle
2.10"
1.60"
N/A
DRT28112000
SB Chevy, 2.02"/1.60" Valves, 1.437" Dual Springs
DRT28212000
SB Chevy, 2.05"/1.60" Valves, 1.437" Dual Springs
DRT28223000
SB Chevy, 2.05"/1.60" Valves, 1.550" Dual Springs
DRT28423000
SB Chevy, 2.08"/1.60" Valves, 1.550" Dual Springs
Part No.
Description
Intake Runner
Comb. Chamber
Intake Valve
Exhaust Valve
Valve Spring Dia./Type
DRT11020020
Bare Casting
225cc
62cc
2.050"
1.600"
N/A
DRT11021122
Assembled
225cc
62cc
2.050"
1.600"
Hyd. Roller/.625" Max Lift
DRT11030153
Assembled/LS3 Compatible
280cc
68cc
2.165"
1.600"
1.295"/Hyd. Roller
261
2022-23