EXHAUST HEADER SUFFIX DESIGNATION GUIDE
Suffix
Description
Suffix
Description
Suffix
Description 18° Chevy Crate 602
V “Stepped” Primary Tubes CM Crate Motor Application
N Y
18 **
Ford “N” Head Application
Tri-Y Header
SP
Spread Port Application
Dirt Late Model Headers (Cont.) New Design Crate Motor lar small block Chevy 602/604 crate motors. The 24" (from head surface to inside of left collector) KHDGHUV¿W5RFNHWDQG%DUU\:ULJKWFKDVVLV ZKLOHWKH¿W%DUU\:ULJKW%HUQKHLVHO*57 Larry Shaw, Raider, Rayburn, Mastersbilt, Stinger, TNT, and Warrior. 6SHFL¿FDOO\GHVLJQHGIRU'LUW /DWH0RGHOV¿WWHGZLWKSRSX -
/QFKƂGF*GCFGTU Mid-Length Primary Style Headers
Mid-length primary headers for small block Chevy offer a compromise between low-end torque and high-RPM horsepower. Standard Part No. Spread Port Part No. 18° Part No.
Primary Tube Dia.
Collector Dia.
Description
Small Block Chevy - Fits Bandit, Dirt Works, GRT, Hoffman, Jet, Shaw, and BMS chassis SCH1105 — — Chevy Headers
1-5/8"
3" 3"
SCH1105V-3
— — “Step” Headers
1-5/8"-1-3/4"
Collector Dia.
SCH1106 SCH1106SP
— Chevy Headers
1-3/4"
3-1/2"
Crate Motor 24" to I/S
Crate Motor 26" to I/S
Primary Tube Dia.
SCH1106V
— SCH1106V18 “Step” Headers
1-3/4"-1-7/8" 3-1/2"
SCH181-406LVGCM2-3** SCH181-606LVGCM2-3 1-5/8"-1-3/4"
3"
SCH181-406LVGCM-3 3" SCH181-406LV3GCM-3 SCH181-606LV3GCM-3 1-5/8"-1-3/4"-1-7/8" 3" — SCH182-606LVG‡ 1-3/4"-1-7/8" 3-1/2" — SCH182-606LVGCM-3 1-3/4"-1-7/8" 3" — SCH180-606LV23GCM-3 1-1/2"-1-3/4"-1-7/8" 3" ‡ Standard Chevy. ** 602 Crate. — 1-5/8"-1-3/4"
Standard Part No.
Spread Port Part No.
18° Part No.
Primary Tube Dia.
Collector Dia.
Description
Small Block Chevy - Fits Ellis chassis SCH1152 3-1/2" SCH1152V — — Chevy Headers 1-3/4"-1-7/8" 3-1/2" — — Chevy Headers 1-3/4"
Long-Tube Primary Style Headers 0RGL¿HGKHDGHUVZLWKORQJHUSULPDU\WXEHV
Long Primary Tri-Y Headers Small block Chevy Tri-Y headers have a four-into- WZRLQWRRQHFRQ¿JXUDWLRQ for increased torque and
add torque and horsepower. Available for a variety of small block Chevy and small block Ford applications. Standard Part No. Crate Part No. Spread Port Part No. Chevy 18° Part No.
Description Tube Dia. Dia. x Length Small Block Chevy - Fits BMS, Dirt Works, Hoffman, Jet, KMOD, Bob Pierce, Sardeson, Smiley’s, and Victory. SCH1185 SCH1185CM2** — — Chevy Header 1-5/8" 3" x 8" SCH1185V — — — Chevy “Step” Headers 1-5/8"- 1-3/4" 3-1/2" x 8" — SCH1185VCM-3 — — Chevy “Step” Headers 1-5/8"- 1-3/4" 3" x 8" SCH1186 — SCH1186SP — Chevy Headers 1-3/4" 3-1/2" x 8" SCH1186V — SCH1186VSP SCH1186V18 Chevy “Step” Headers 1-3/4"- 1-7/8" 3-1/2" x 9" Standard Part No. Part No. Spread Port Part No. Chevy 18° Part No. Description Tube Dia. Dia. x Length Fits Harris, Skyrocket and Victory — SCH11619HCM — — Chevy Headers 1-5/8" 3" x 8" — SCH11619HCM2** — — Chevy Headers 1-5/8" 3" x 8" Standard Part No. Description Primary Tube Dia. Collector Dia. x Length Fits BMS, Hughes, Larry Shaw, TRE — Headers 1-5/8" 3" x 8" SCH1146V “Step Headers" 1-3/4"-1-7/8" 3-1/2" x 9" Standard Part No. Description Primary Tube Dia. Dia. x Length Fits Diamond Chassis SCH1126V “Step Headers” 1-3/4"-1-7/8" 3" x 8" Standard Part No. Description Primary Tube Dia. Collector Dia. x Length Small Block Ford - Standard Windsor SCH3186 Ford Headers 1-3/4" 3-1/2" x 8" ** 602 Crate. Long-Tube Headers
horsepower. Sold complete with gaskets and bolts. Fits 5D\EXUQ0DVWHUVELOW5RFNHW ZLOOQRW¿W%ODFNIURQWHQG and most other chassis. Standard Part No. 13/15/18° Part No. Description Primary Tube Dia. Collector Dia. — SCH14260LVY18 “Step" Headers 1-3/4"-1-7/8" 3-1/2" SCH14260LV3Y — “Step” Headers 1-3/4"-1-7/8"-2" 3-1/2" — SCH14360LVY18 “Step” Headers 1-7/8"-2" 3-1/2" LS1-LS7
Fit Bob Pierce, GRT, Rayburn, Masterbuilt,Larry Shaw, Rocket and most other chassis.
1-3/4"-1-7/8" 3-1/2"x 9"
SCH14260LVYLS3
—
&+46/QFKƂGF Cab Forward Style Headers Small block Chevy-powered
',570RGL¿HGKHDGHUV use a cab forward design
IRUDGGHGPXIÀHUFOHDUDQFH Headers are compatible with Bicknell, Olsen, TEO, and Troyer chassis. Sold complete with gaskets and bolts. Standard Part No. Crate Part No. Spec. Part No.
Primary Tube Dia.
Collector Dia. x Length
IMCA long-tube headers utilizing long prima- ry tubes for improved torque and horsepower. Available for standard and crate motor small block Chevys. Standard Part No. Crate Motor Part No. Primary Tube Dia.
Description
— SCH1122BUCM2* ‡ SCH1122BCM2* Headers
1-5/8"
3" x 8"
— SCH1122BVSH-3 +# SCH1122BVUSH-3 +
Step 1-5/8-1-3/4 3" x 8"
SCH1122BV-3
—
— Step 1-3/4"-1-7/8" 3-1/2" x 9"
SCH1124BV +
Collector Dia. x Length
* D.I.R.T Sportsman division spec. header. + D.I.R.T. 358 division spec. header. # Std. Chevy flange. ** 602 Crate. ‡ New upswept design.
Fit Hoffman, Kazzbuilt, MB Customs, Razor and Sidebiter SCH1101 SCH1101CM2** 1-5/8" 3" x 8" — SCH1101V3CM-3 1-5/8"-1-3/4"-1-7/8" 3" x 8" ** 602 Crate.
703
CIRCLE TRACK 2021-22
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