Page 688 - 2019-2020 Racecar Engineering Circle Track Parts and Accessories Catalog

EXHAUST HEADER SUFFIX DESIGNATION GUIDE
Suffix Description Suffix Description Suffix Description
V “Stepped” Primary Tubes N Ford “N” Head Application 18 18° Chevy
CM Crate Motor Application Y Tri-Y Header ** Crate 602
SP Spread Port Application
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TWO-PIECE ADJUSTABLE HEADERS
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Primary Collector LH-Style 3 LH-Style 6 LH-Style 9 LH-Style 9H
Description Tube Dia. Dia. x Length RH-Style 8 RH-Style 8 RH-Style 8 RH-Style 8 SCH161-68
Small Block Chevy
Standard Chevy 1-5/8"-1-3/4" 3" x 8" SCH161-38 SCH161-68 SCH161-98 SCH161-98H
Standard Chevy 1-3/4"-1-7/8" 3-1/2" x 9" — SCH162-68 SCH162-98 SCH162-98H
Spread Port 1-3/4"-1-7/8" 3-1/2" x 9" — — SCH162-98SP —
Small Block Ford
Windsor 1-5/8"-1-3/4" 3" x 8" — — — —
Dart/“N” Head 1-3/4"-1-7/8" 3-1/2" x 9" — SCH362-68N — — LH Style 3
Note: Use chart below as reference for collector styles. LH Style 9
LH Style 6
REPLACEMENT ADJUSTABLE SLIP-OVER COLLECTORS
Style Style Style Style Style Tube Collector No.
3 6 8 9 9H Dia. I.D. Dia. Of Tubes RH Style 8
SCHSO63043 SCHSO63046 SCHSO63048 SCHSO63049 — 1-5/8" 3" 4 LH Style 9H
SCHSO73543 SCHSO73546 SCHSO73548 SCHSO73549 SCHSO73549H 1-3/4" 3-1/2" 4

Street Stock Headers
CAMARO/MONTE CARLO HEADERS GM “A”/“F”/ “G” BODY HEADERS
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Standard Spread Port Crate Motor Primary Collector
Standard Crate Motor Primary Collector Part No. Part No. Part No. Description Tube Dia. Dia. x Length
Part No. Part No. Description Tube Dia. Dia. x Length
SCH165ACM Chevy SCH185CM
SCH165A 1-5/8" 3" x 8" SCH185 — SCH185MCM2** Chevy Headers 1-5/8" 3" x 8"
SCH165ACM2** Headers
Chevy SCH185M* — SCH185MCM Chevy Headers 1-5/8" 3" x 8"
SCH165VA — “Step” Headers 1-5/8"-1-3/4" 3" x 8" SCH185V — SCH185VCM “Step” Headers 1-5/8"-1-3/4" 3" x 8"
SCH166A — Chevy Headers 1-3/4" 3-1/2" x 8" SCH186 — — Chevy Headers 1-3/4" 3-1/2" x 8"
SCH166 † — Chevy Headers 1-3/4" 3-1/2" x 8" SCH186V — — “Step” Headers 1-3/4"-1-7/8" 3-1/2" x 9"
Small Block SCH186-3 — — Chevy Headers 1-3/4" 3" x 8"
SCH386N+ — 1-3/4" 3-1/2" x 8"
Ford Header SCH186M-3 † — — Chevy Headers 1-3/4" 3" x 8"
† Also fits 1964-77 Chevelle. ** 602 crate SCH187 — — Chevy Headers 1-7/8" 3-1/2" x 9"
+ Fits wide Dart bolt pattern and “N” head — — SCH186CM Chevy Headers 1-3/4" 3-1/2" x 9"
— SCH187SP — Chevy Headers 1-7/8"
STOCK CLIP OVER FRAME RAILS HEADERS * Must use short oil filter. Will clear stock manual clutch linkage ball.
+HDGHUV H[LW RYHU WKH IUDPH UDLOV DQG DUH QRW ** 602 crate † Fits 1970-81 Camaro. Must use short oil filter. Will clear stock
FRPSDWLEOH ZLWK VWRFN ¿UHZDOOV 6PDOO EORFN manual clutch linkage ball.
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Primary Collector
Part No. Description Tube Dia. Dia. x Length &DPDUR DQG *0 PHWULF FOLS FDUV 6PDOO
SCH122 Chevy Headers 1-3/4" 3-1/2" x 8" EORFN &KHY\ RYHU WKH IUDPH VW\OH KHDGHUV H[LW RXW DW
SCH126* Chevy Headers, RH Rear Exit 1-3/4" 3-1/2" x 8" PLG IHQGHU DQG DUH FRPSDWLEOH ZLWK WKH VWRFN ¿UHZDOO DQG
SCH155 Chevy Headers, Exit At 45° Angle 1-5/8" 3" x 8" XSSHU $ IUDPHV ZLWK WKH HQJLQH LQ WKH VWRFN ORFDWLRQ
SCH155V Chevy “Step" Headers 1-5/8"-1-3/4" 3-1/2" x 8"
Primary
Collector
SCH156 Chevy Headers, Exit At 45° Angle 1-3/4" 3-1/2" x 8" Part No. Description Tube Dia. Dia. x Length
SCH356VN † Ford Headers 1-3/4"-1-7/8" 3-1/2" x 9" SCH103 1970-81 Camaro Headers 1-5/8" 3" x 8"
SCH155V-3 Chevy Step Headers 1-5/8"-1-3/4" 3" x 8"
Chevy LS1-LS7 SCH104 1970-81 Camaro Headers 1-3/4" 3-1/2" x 8"
SCH156VLS1 1-3/4"-1-7/8" 3-1/2" x 9" SCH107 1978-82 GM Metric Headers 1-5/8" 3" x 8"
Step Headers
* Will not fit with stock A-frames. † Fits Dart wide bolt pattern and SCH108 1978-82 GM Metric Headers 1-3/4" 3-1/2" x 8"
Sportsman “N” head.
684 2019-20 CIRCLE TRACK PARTS AND ACCESSORIES