Page 264 - 2022-23 Auto Performance Drag Racing

DRAG RACING
Versatile cast iron heads have rectangular intake ports, rolled valve angles, and .300" raised exhaust ports for maximum performance. 308cc or 345cc intake runner heads have heart-shaped 119cc combustion chambers. High-velocity 308cc head works well for street or mild bracket racing, while larger 345cc heads are ideal for bracket competition. Sold individually, bare or fully assembled.
Pro 1 Cylinder Heads for BB Chevy
Championship-winning technology in an affordable package. Aluminum heads feature 2° rolled valve angles, .300" raised exhaust ports and fast-burn combustion chambers. Available in five different intake runner volumes for a wide variety of ap- plications, heads are also offered in fully CNC-ported versions to maximize performance. Bare castings have multi-angle valve job and bronze valve guides. Assembled versions have extra long valves, springs, retainers, locks, and seals. Sold individually, bare or fully assembled.
Iron Eagle Cylinder Heads for BB Chevy
Part No.
Description
Intake Runner
Comb. Chamber
Intake Valve
Exhaust Valve
Valve Spring Dia./Type
DRT15100010
Bare Casting
308cc
119cc
2.25"
1.88"
N/A
DRT15100111
Assembled
308cc
119cc
2.25"
1.88"
1.550"/Single
DRT15200030
Bare Casting
345cc
119cc
2.30"
1.88"
N/A
DRT15200132
Assembled
345cc
119cc
2.30"
1.88"
1.550"/Double
Part No.
Description
Intake Runner
Comb. Chamber
Intake Valve
Exhaust Valve
Valve Spring Dia./Type
Pro 1 Cylinder Heads
DRT19100010
Bare Casting
310cc
119cc
2.25"
1.88"
N/A
DRT19100112
Assembled
310cc
119cc
2.25"
1.88"
1.550"/Dual
DRT19200010
Bare Casting
325cc
119cc
2.25"
1.88"
N/A
DRT19200116
Assembled
325cc
119cc
2.25"
1.88"
1.625"/Dual
DRT19300030
Bare Casting
345cc
119cc
2.30"
1.88"
N/A
DRT19300136
Assembled
345cc
119cc
2.30"
1.88"
1.625"/Dual
CNC-Ported Pro 1 Cylinder Heads
DRT19474030
Bare Casting
335cc
121cc
2.30"
1.88"
N/A
DRT19574030
Bare Casting
355cc
121cc
2.30"
1.88"
N/A
DRT19574136
Assembled
355cc
121cc
2.30"
1.88"
1.625"/Dual
Pro 2 Cylinder Head for BB Chevy DRT19674080
Specifically engineered for maximum performance bracket racing, Super classes or heads-up drag racing, Pro 2 24° cylinder heads feature large 380cc intake runner and fully CNC-machined ports and combustion chambers. Sold individually as bare castings, heads are machined for 2.350" intake and 1.850" exhaust valves.
Pro 1 Cylinder Head for SB Ford
Pro 1 small block Ford cylinder head has 195cc intake port volume. Head offers exceptional flow and is made from 355-T6 aluminum with 62cc combustion chambers, raised exhaust ports and intake ports in stock locations. Sold individually. Bare or completely assembled.
Part No.
Description
Intake Runner
Comb. Chamber
Intake Valve
Exhaust Valve
Valve Spring Dia./Type
DRT13200010
Bare Casting
195cc
62cc
2.02"
1.60"
N/A
DRT13211112
Assembled
195cc
62cc
2.02"
1.60"
1.437"/Solid
262
2022-23