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Small Block Rocker Systems
Part numbers listed below are the most popular offsets for small block Chevrolet rocker systems. They are available on-center (zero) to 0.775 off-set. Call T&D for other available off-sets, and for information on special ratios.
GM Castings
Part No. Description
Length
Int O/S
Exh O/S
Foot notes
2003 OEM Iron
1.450
0.170
0.080
2004 LT1, Center Bolt, Vortec
1.450
0.080
0.080
2012 Bowtie 23 Deg. Aluminum
1.450
0.250
0.080
2013 Bowtie 23 Deg. Iron
1.450
0.170
0.080
2050 Bowtie 18 Deg.
1.520
0.465
0.170
2053 Bowtie 18 Deg.
1.520
0.550
0.170
2055 Bowtie 18 Deg. (1.650 pivot length)
1.650
0.550
0.170
2070 Chevy Canted Valve
1.520/1.600
0.080
O/C
2076 Holden Canted Valve
1.750
0.150
O/C
2080 SB2 Version 1
1.650
0.080
0.170
209678 SB2.2
1.750/1.850
O/C
O/C
209688 SB2.2
1.850
O/C
O/C
LS Series
Part No. Description
Length
Int O/S
Exh O/S
Foot notes
20042 LS1
1.450
O/C
O/C
20044 GM L92
1.450
0.215
O/C
20047 Trickflow LS1
1.450
0.130
O/C
2008 LS7
1.600
0.350
O/C
2180 World Products Warhawk LS7
1.600
0.350
O/C
Alan Johnson
Part No. Description
Length
Int O/S
Exh O/S
Foot notes
2370 21, 23 Deg.
1.450
0.450
0.080
2375 18 Deg.
1.650
0.550
0.080
2376 12 Deg.
1.650
0.675
0.080
All Pro
Part No. Description
Length
Int O/S
Exh O/S
Foot notes
2331 All-Pro 22 Deg. 270-22
1.450
0.700
0.170
2344 All-Pro 13 Deg. 270-2, 286-2, 284-4
1.650
0.650
0.080
23441 All-Pro 13 Deg. 260 LM, 270 LM
1.650
0.650
0.080
Air Flow Research
Part No. Description
Length
Int O/S
Exh O/S
Foot notes
2300 AFR 227, 235
1.450
0.450
0.080
2301 AFR 227, 235
1.450
0.375
0.080
2311 AFR 215, 220, 225
1.450
0.375
0.080
2317 AFR 190, 195, 210
1.450
0.250
0.080
2319 AFR 195, 200, 210 Eliminator
1.450
0.250
0.080
Brodix
Part No. Description
Length
Int O/S
Exh O/S
Foot notes
2206 Brodix - 12
1.650
0.450
0.080
2207 Brodix - 12
1.650
0.550
0.080
22073 Brodix 12x12
1.750
0.550
0.080
2212 Brodix -8, -10, -11, IMCA Spec
1.450
0.250
0.080
2216 Brodix 8X, 10X, 11X, Pontiac 867
1.450
0.450
0.080
2217 Brodix 8X, 10X, 11X, ASCS Spec
1.450
0..375
0.080
2218 Brodix 8X, 10X, 11X, 18X, 18SP
1.450
0.250
0.080
2220 Brodix BD 1000, BD 1010
1.650
0.700
0.080
2221 Brodix GB 2000
1.650
0.700
0.080
2222 Brodix GB 2200 Jones 282 Port
1.650
0.725
0.080
22221 Brodix GB 2300 Jones 309 Port
1.650
0.775
0.080
2223 Brodix BD 2000
1.650
0.700
O/C
2229 Brodix 18 Deg. Clone
1.520
0.550
0.170
2238 Brodix/Weldtech 18AP
1.520
0.750
0.080
2251 Brodix Track 1 Spec
1.450
0.250
0.080
2254 Brodix Track 1
1.450
0.170
0.080
2257 Brodix Track 1X
1.450
0.170
0.080
Canfield
Part No. Description
Length
Int O/S
Exh O/S
Foot notes
2380 195cc Runner
1.450
0.250
0.080
2381 220cc Runner
1.450
0.450
0.080
CFE/BMF
Part No. Description
Length
Int O/S
Exh O/S
Foot notes
2365 CFE 23 Deg
1.450
0.375
0.080
2366 CFE 18 Deg
1.520
0.550
0.170
2367 CFE 11 Deg SBX
1.750
O/C
O/C
2368 CFE 15 Deg
1.650
0.700
0.220
Dart
Part No. Description
Length
Int O/S
Exh O/S
Foot notes
2102 Dart Aluminum
1.450
0.250
0.080
2110 Dart High Port
1.450
0.450
0.080
2141 Dart Sportsman II Iron
1.450
0.170
0.170
2144 Dart Sportsman II Aluminum/Pro 1
1.450
0.250
0.170
2150 Dart Iron Eagle
1.450
0.170
0.170
Dart Buick
Part No. Description
Length
Int O/S
Exh O/S
Foot notes
5000 Dart Buick 13/16 Shaft 1.960 Valve Center
1.710
0.650
0.175
5002 Dart Buick 13/16 Shaft 2.000 Valve Center
1.170
0.650
0.175
5500 Dart Buick 5-8 Shaft 1.960 Valve Center
1.650
0.550
0.170
5502 Dart Buick 5-8 Shaft 2.000 Valve Center
1.650
0.550
0.170
Edelbrock
Part No. Description
Length
Int O/S
Exh O/S
Foot notes
2323 Edelbrock 18 Deg.
1.520
0.550
0.170
2325 Edelbrock 23 Deg.
1.450
0.450
0.080
RHS/Pro Topline
Part No. Description
Length
Int O/S
Exh O/S
Foot notes
2390 RHS/ Pro Topline 14 Deg. Drag Race
1.650
0.550
0.170
2391 RHS/ Pro Topline 14 Deg. Sprint Car
1.650
0.550
0.170
2392 RHS/ Pro Topline 14 Iron Lightning
1.450
0.170
0.080
2393 RHS/ Pro Topline 23 Deg. Aluminum Lightning
1.450
0.250
0.080
2398 RHS/ Pro Topline 23 Deg. Raised Runner
1.450
0.450
0.080
2399 RHS Spring Car
1.450
0.375
0.170
World Products
Part No. Description
Length
Int O/S
Exh O/S
Foot notes
2160 World Products Motown 220
1.450
0.130
0.130
Ultra Pro
Part No. Description
Length
Int O/S
Exh O/S
Foot notes
2400 Ultra Pro 9 Deg
1.850
0.750
0.150
2405 Ultra Pro 9 Deg, 4.500 Bore
1.850
0.775
0.150