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IMCA Modified

  Fits Harris, Larry Shaw, Skyrocket, Victory 

TUBE
DIAMETER

COLLECTOR
DIA.

STANDARD
CHEVY

CRATE
MOTOR

PRICE

SPREAD PORT/D.N.

18°
CHEVY

PRICE

1 5/8" 

3"

11619H

11619HCM

189.95

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-----

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1 5/8 - 1 3/4"

3 1/2"

1161V9H

1161V9HCM

239.95

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-----

 -----
1 5/8 - 1 3/4" 3"

1161V9H-3

1161V9HCM-3

239.95

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-----

-----
1 3/4" 3 1/2" 11629H 11629HCM 189.95

11629HSP

11629H18

 239.95
1 3/4" - 1 7/8" 3 1/2" 1162V9H 1162V9HCM 239.95 1162V9HSP 1162V9H18 289.95

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Fits Bob Pierce, BMS, Dirtworks, GRT, Harris, Hoffman, Jet, Larry Shaw  

TUBE
DIAMETER

COLLECTOR
DIA.

STANDARD
CHEVY

CRATE
MOTOR

PRICE

SPREAD
PORT/D.N.

18°
CHEVY

PRICE

1 5/8" 

3"

1105

1105CM

189.95

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-----

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1 5/8 - 1 3/4"

3 1/2"

1105V

1105VCM

239.95

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-----

 -----
1 5/8 - 1 3/4" 3"

1105V-3

1105VCM-3

239.95

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-----

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1 3/4" 3 1/2" 1106 1106CM 189.95 1106SP 1106-18 239.95
1 3/4" - 1 7/8" 3 1/2" 1106V 1106VCM 239.95 1106VSP 1106V18 289.95

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IMCA Modified Tri-Y

4 Into 2 Into 1 Tube Configuration for Increased Torque
Fits Bob Pierce, Hoffman, Hughes, Impressive, Victory, J Car

TUBE
DIAMETER

COLLECTOR
DIA.

STANDARD
CHEVY

SPREAD PORT

PRICE

1  5/8" - 1 3/4" 3" 1185VY

------

 679.95

 1  3/4" - 1 7/8"

3 1/2"

1186VY

1186VYSP

679.95
 
 
Fits Larry Shaw

          TUBE
         DIAMETER

COLLECTOR
    DIA.

   STANDARD
  CHEVY

   PRICE

     1  5/8" - 1 3/4"

       3"

1195VY

     679.95

     1  3/4" - 1 7/8"

3 1/2"

1196VY

    679.95

.   .   .   .   .   .      .   .   .   .      .   .   .   .      .   .   .   .      .   .   .   .      .   .   .   .      .   .   .   .      .   .

IMCA Modified
Long-Tube Design

Longer primaries for maximum torque and horsepower
Fits BMS, Dirtworks, Hoffman, Jet, KMOD, Bob Pierce, Sardeson, Smiley's, Victory.

TUBE
DIAMETER

COLLECTOR
DIA./LENGTH

STANDARD
CHEVY

CRATE
MOTOR

PRICE

SPREAD
PORT

18°
 CHEVY

PRICE

1 5/8" 3" X 8"

1185

1185CM

199.95

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-----

-----

1 5/8" - 1 3/4"

3 1/2" x 8"

1185V

1185VCM

249.95

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------

------

1 5/8" - 1 3/4"

3" x 8"

1185V-3

1185VCM-3

249.95

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------

 ------

1 3/4"

3 1/2" x 8"

1186

1186CM

199.95

1186SP

1186-18

 249.95

1 3/4" - 1 7/8"

3 1/2" x 9"

1186V

1186VCM

249.95

1186VSP

1186V18

 299.95

TUBE
DIAMETER

COLLECTOR
DIA./LENGTH

STANDARD
CHEVY

PRICE

SPREAD
PORT

18° 
CHEVY

PRICE

1 5/8" - 1 3/4"

3 1/2" x 8"

1175V

249.95

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------

------

1 5/8" - 1 3/4"

3" x 8"

1175V-3

249.95

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------

 ------

1 3/4"

3 1/2" x 8"

1176

199.95

1176SP

1176-18

 249.95

1 3/4" - 1 7/8"

3 1/2" x 9"

1176V

249.95

1176VSP

1176V18

 299.95

1 7/8"

3 1/2" x 9"

1177

219.95

1177SP

1177-18

 269.95

TUBE
DIAMETER

COLLECTOR
DIA./LENGTH

STANDARD
CHEVY

CRATE MOTOR

PRICE

SPREAD
PORT

18° 
CHEVY

PRICE

1 5/8"  

3" x 8"

1165

1165CM

219.95

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------

------

1 5/8" - 1 3/4"

 3 1/2" x 8" 1165V 1165VCM

269.95

  ------

------

 ------

   1 5/8" - 1 3/4"

 3" x 8" 1165V-3 1165VCM-3 269.95   ------   ------ ------
1 3/4"

3 1/2" x 8"

1166 1166CM

219.95

1166SP

1166-18

269.95

TUBE
DIAMETER

COLLECTOR
DIA./LENGTH

STANDARD
CHEVY

PRICE

SPREAD
PORT

18° 
CHEVY

PRICE

1 3/4" - 1 7/8"

3 1/2" x 9"

1146V

249.95

1146VSP

1146V18

 299.95

TUBE
DIAMETER

COLLECTOR
DIA./LENGTH

STANDARD
CHEVY

PRICE

SPREAD
PORT

18° 
CHEVY

PRICE

1 5/8" - 1 3/4"

3 1/2" x 8"

1171V

249.95

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------

------

1 5/8" - 1 3/4"

3" x 8"

1171V-3

249.95

------

------

 ------

1 3/4"

3 1/2" x 8"

1172

199.95

1172SP

1172-18

 249.95

1 3/4" - 1 7/8"

3 1/2" x 9"

1172V

249.95

1172VSP

1172V18

279.95

1 7/8"

3 1/2" x 9"

1173

219.95

1173SP

1173-18

 299.95

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IMCA Modified (Adjustable) Headers

Left Side
Collectors

Ceramic Coating add $225.00

Right Side
Collectors

Header Numbering System
 Example: (161-68)

ENGINE TYPE

HEADER
STYLE

TUBE
DIAMETER

 

LEFT COLL.
STYLE

RIGHT COLL.
STYLE

1

6

1

 -

6

8

Collectors are slip-on to adjust for engine location

TUBE
DIAMETER

COLLECTOR
DIA./LENGTH

FLANGE

L-STYLE 3 R-STYLE 8

L-STYLE 6
R-STYLE 8

L-STYLE 9
R-STYLE 8

L-STYLE 9H
R-STYLE 8

PRICE

1 1/2" - 1 5/8"

3" X 8"

STANDARD

160-38

160-68

160-98

160-98H

189.95

1 5/8" - 1 3/4"

3" x 8"

STANDARD

161-38

161-68

161-98

161-98H

169.95

1 3/4" - 1 7/8"

3 1/2" x 9"

STANDARD

162-38

162-68

162-98

162-98H

189.95

1 3/4" - 1 7/8"

3 1/2" x 9"

SPRD PORT

162-38SP

162-68SP

162-98SP

162-98HSP

239.95

1 3/4" - 1 7/8"

3 1/2" x 9"

18° CHEVY

162-38-18

162-68-18

162-98-18

162-98H-18

239.95

1 7/8" - 2"

3 1/2" x 9"

STANDARD

163-38

163-68

163-98