Page 598 - 2017 Racecar Engineering Circle Track Parts and Accessories Catalog

EXHAUST HEADER SUFFIX DESIGNATION GUIDE
Suffix Description Suffix Description
V “Stepped” Primary Tubes N Ford “N” Head Application
CM Crate Motor Application Y Tri-Y Header
SP Spread Port Application 18 18° Chevy
MODIFIED HEADERS LONG TUBE HEADERS
(LH Straight Out/RH Rear Exit)
MID-LENGTH PRIMARY STYLE HEADERS Left side header is a straight-out style and
Mid-length primary headers for right side header is a conventional rear exit.
small block Chevy offer Available for standard and spread port exhaust small block
a compromise between low Chevys.
end torque and high RPM horsepower. Standard Spread Port Primary Collector
Fits Bandit, Dirt Works, GRT, Hoffman, Part No. Part No. Description Tube Dia. Dia. x Length
Jet, Shaw and BMS chassis. SCH1172 – Chevy Headers 1-3/4" 3-1/2" x 8"
Standard Spread Port 18° Primary Collector SCH1172V – “Step” Headers 1-3/4"-1-7/8" 3-1/2" x 9"
Part No. Part No. Part No. Description Tube Dia. Dia. SCH1176 SCH1176SP Chevy Headers 1-3/4" 3-1/2" x 8"
Small Block Chevy SCH1176V – “Step” Headers 1-3/4"-1-7/8" 3-1/2" x 9"
SCH1105 – – Chevy Headers 1-5/8" 3"
SCH1105V – – “Step” Headers 1-5/8"-1-3/4" 3-1/2"
SCH1105V-3 – – “Step” Headers 1-5/8"-1-3/4" 3"
SCH1106 SCH1106SP – Chevy Headers 1-3/4" 3-1/2" STRAIGHT-OUT HEADERS
SCH1106V – SCH1106V18 “Step” Headers 1-3/4"-1-7/8" 3-1/2" One-piece headers utilize a
straight-out primary tube and
Fits Ellis chassis collector. Small block Chevy headers are
Standard Spread Port 18° Primary Collector
Part No. Part No. Part No. Description Tube Dia. Dia. for standard exhaust ports.
Small Block Chevy Primary Collector
SCH1152 – – Chevy Headers 1-3/4" 3-1/2" Part No. Description Tube Dia. Dia. x Length
3" x 8"
SCH1152V – – Chevy Headers 1-3/4"-1-7/8" 3-1/2" SCH161 Chevy Headers 1-5/8" 3-1/2" x 8"
Chevy Headers
SCH162
1-3/4"
LONG-TUBE PRIMARY STYLE HEADERS
Modified headers with longer primary tubes add
torque and horsepower. Available for a variety of
small block Chevy and small block Ford STRAIGHT-OUT SHORT HEADERS
applications. Small block Chevy Modified headers
Fits BMS, Dirt Works, Hoffman, Hot, Jet, KMOD, have short primary tubes for crisp throttle
Pierce, Pro, Quick, Sardeson, Smiley’s and Victory response and a flatter torque curve. Available in
Standard Crate Spread Port Chevy 18° Dia. x standard port design.
Part No. Part No. Part No. Part No. Description Tube Dia. Length
Small Block Chevy Standard Primary Collector
Dia. x Length
Description
Part No.
SCH1185 SCH1185CM – – Chevy Headers 1-5/8" 3" x 8" SCH162B Chevy Headers Tube Dia. 3-1/2" x 8"
1-3/4"
Chevy “Step” 1-5/8"-
SCH1185V – – – 3-1/2" x 8"
Headers 1-3/4"
Chevy “Step” 1-5/8"-
– SCH1185VCM-3 – – 3" x 8"
Headers 1-3/4" ANGLE BACK HEADERS
SCH1186 – SCH1186SP – Chevy Headers 1-3/4" 3-1/2" x 8" One-piece, angle back headers fit
Chevy “Step” 1-3/4"-
SCH1186V – SCH1186VSP SCH1186V18 3-1/2" x 9" most popular Modified chassis.
Headers 1-7/8" Offered for small block Chevys
Fits Harris, Skyrocket And Victory only in standard port design.
Standard 604 Crate Spread Port Chevy 18° Dia. x
Collector
Part No. Part No. Part No. Part No. Description Tube Dia. Length Standard Description Primary Tube Dia. x Length
Dia.
Part No.
– SCH11619HCM – – Chevy Headers 1-5/8" 3" x 8" SCH171 Chevy Headers 1-5/8" 3" x 8"
Fits BMS, Hughes, Larry Shaw, Razor, TRE SCH172 Chevy Headers 1-3/4" 3-1/2" x 8"
Standard Crate Primary Collector SCH173 Chevy Headers 1-7/8" 3-1/2" x 9"
Part No. Part No. Description Tube Dia. Dia. x Length
– SCH1145CM Headers 1-5/8" 3" x 8" TRI-Y HEADERS
SCH1146V – “Step Headers" 1-3/4"-1-7/8" 3-1/2" x 9" Four-into-two-into-one configuration combined with “stepped”
Fits Diamond Chassis primary tubes delivers increased torque.
Standard Crate Spread Port Chevy 18° Primary Dia. x Available for standard, spread port 18° small block Chevy.
Part No. Part No. Part No. Part No. Description Tube Dia. Length Fits Harris, Hoffman, J-Car, Impressive, Bob Pierce
“Step
SCH1126V – – SCH1126V18 1-3/4"-1-7/8" 3" x 8" and Victory chassis
Headers”
Standard Spread Port 18° Primary Collector
Part No. Part No. Part No. Description Tube Dia. Dia.
Standard Primary Collector Small Block Chevy
Part No. Description Tube Dia. Dia. x Length SCH1185VY – – “Step” Headers 1-5/8"-1-3/4" 3"
Small Block Ford - Standard Windsor SCH1186VY SCH1186VYSP SCH1186VY18 “Step” Headers 1-3/4"-1-7/8" 3-1/2"
SCH3186 Ford Headers 1-3/4" 3-1/2" x 8"
Fits Larry Shaw, J-Car And Elite Chassis
Standard Spread Port 18° Primary Collector
Part No. Part No. Part No. Description Tube Dia. Dia.
SCH1195VY – – “Step” Headers 1-5/8"-1-3/4" 3"
LONG TUBE HEADERS SCH1196VY – – “Step” Headers 1-3/4"-1-7/8" 3-1/2"
Designed for IMCA Modifieds using Harris or Hoffman chassis, Mid-Length Primary Fits BMS, Dirt Works, GRT,
headers utilize long primary tubes for improved torque and Harris, Hoffman, Jet Racing and Larry Shaw Chassis.
horsepower. Available for standard and crate motor small block Chevys. Standard 18° Primary Collector
Standard Crate Motor Primary Collector Part No. Part No. Description Tube Dia. Dia.
Part No. Part No. Tube Dia. Dia. x Length SCH1106VY SCH1106VY18 “Step" Headers 1-3/4"-1-7/8" 3-1/2"
SCH1101 – 1-5/8" 3" x 8"
– SCH1101V3CM-3 1-5/8"-1-3/4"-1-7/8" 3" x 8"
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