Vortech Superchargers Big Block Chevy Race Bracket System Installation guide

DP/N: 4GB020-020v2.1 10/02/2019

Big Block Chevy Low Mount Race Bracket

Installation Instructions

®

1650 Pacific Avenue, Channel Islands, CA 93033-9901 • Phone (805) 247-0226

Fax: (805) 247-0669 • www.vortechsuperchargers.com • M-F 7:00 AM - 3:30 PM (PST)

ENGINEERING, INC.

For use with:

3GB218-010, 4GB218-040, -050, -060

DP/N: 4GB020-020v2.1, 2019-10-02

FOREWORD

1. THIS IS A RACE PRODUCT. NO WARRANTY IS IMPLIED.

2. Some fabrication will be necessary to fit your application.

3. Proper installation of this accessory requires general automotive mechanic

knowledge and experience. Please browse through each step of this instruction

manual prior to beginning the installation to determine if you should refer the job to

a professional installer/technician. Please contact your dealer or Vortech

Engineering for possible installers in your area.

4. Pulley and belt selection will vary depending on your application, as well as engine

deck height. Refer to Appendix D for a pulley and belt selection guide. Consult an

engine builder to help select the correct combination for your application.

5. Oiling systems will vary depending your application, therefore it isn't specifically

addressed in this installation manual. However, we have provided examples of

various ways the oiling system could be set up. See Appendix E through G near

the back of this manual. Consult an engine builder to help select the correct

combination for your application.

6. Vortech is not responsible for any clutch, transmission, drive-line or engine

damage.

another language in any form, by any means without written permission of Vortech Engineering, Inc.

All information, illustrations and specifications contained herein are based on the latest product

information available at the time of this publication. Changes to the manual may be made at any

time without notice. Contact Vortech Engineering for any additional information regarding this kit

and any of these modifications at (805) 247-0226 7:00am-3:30pm PST.

STOP

Take note of the following before proceeding:

DP/N: 4GB020-020v2.1, 2019-10-02

iii

TABLE OF CONTENTS

FOREWORD ...................................................ii

TABLE OF CONTENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . iii

TOOL & SUPPLY REQUIREMENTS .................................iv

PARTS LIST ................................................... v

1. PREPARATION AND REMOVAL ...........................................1

2. RACE BRACKET ASSEMBLY INSTALLATION ................................3

3. COOLANT ADAPTER ASSEMBLY INSTALLATION .............................7

4. COG DRIVE SYSTEM INSTALLATION ......................................9

5. OILING SYSTEM NOTES AND FINAL CHECK . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

APPENDIX A - DIAGRAM, PARTS LIST, RACE MOUNTING BRACKET...............13

APPENDIX B - DIAGRAM, ASSEMBLY, RACE MOUNTING BRACKET ...............14

APPENDIX C - DIAGRAM, ASSEMBLY, MANUAL BELT TENSIONER ................15

APPENDIX D - DIAGRAM, PULLEY AND BELT SELECTION GUIDE .................16

APPENDIX E - DIAGRAM, OIL SYSTEM, DRY SUMP .............................17

APPENDIX F - DIAGRAM, OIL SYSTEM, DEDICATED RESERVOIR .................18

APPENDIX G - DIAGRAM, OIL SYSTEM, ENGINE OIL FED ........................19

DP/N: 4GB020-020v2.1, 2019-10-02

VORTECH BIG BLOCK CHEVY RACE BRACKET

Installation Instructions

Before beginning this installation,

please read through this entire instruction manual

The Vortech Big Block Chevy Race Bracket was designed specifically for use on Big

Block Chevy engines with V-30 series superchargers. As with any power enhancing

product, this unit is intended for use on healthy, well-maintained engines. Vortech

Engineering is not responsible for engine damage.

TOOL & SUPPLY REQUIREMENTS:

• 3/8" drive ratchet

• 3/8" drive ratchet extensions

• 3/8" drive torque wrench

• 3/8" drive socket set: SAE

• 3/8" drive hex key set: SAE

• Combination wrenches: SAE

• Loctite 242 (blue) threadlocker.

• Anti-seize lubricant

• White lithium grease

DP/N: 4GB020-020v2.1, 2019-10-02

v

PARTS LIST

BIG BLOCK CHEVY LOW MOUNT

RACE BRACKET ASSEMBLY

PART NO. DESCRIPTION QTY

3GB218-010 RACE BRKT ASY, BBC, LOW 1

2A017-875-050 SPACER, .875"OD X .469"ID X .500"L 2

2A017-875-875 SPACER, .875"OD X .469"ID X .875"L 2

2A017-980-050 SPACER, .980"OD X .469"ID X .500"L 1

2A017-980-375 SPACER, .980"OD X .496"ID X .375"L 2

2A017-980-500 SPACER, .980"OD X .469"ID X 5.00"L 3

2A017-980-875 SPACER, .980"OD X .469"ID X .875"L 1

2A042-154 BELT, 8M PITCH, 154 TH, 1232 L, 50 MM WD 1

2G034-036 PLY, V20 COG 8MM, 36T 50MM 1

4FP116-020 IDLER W/BRNG ASSY, 50MM 1

4GA010-001 SLIDER, BELT TENSIONER 1

4GA010-002 SLIDER CAP, BELT TENSIONER 1

4GA010-003 TENSIONER SCREW MOUNT, 2.25" WIDE 1

4GA011-001 BELT TENSIONER PLATE, BBC 1

4GA011-002 BASE PLATE, BBC 1

4GA011-003 S/C MOUNTING PLATE, BBC 1

4GA017-001 BRNG SUPRT, IDLR PLY, .500" ID X 1.85" L 1

4GA017-002 BRNG SUPRT, IDLR PLY, .500" ID X .100" L 1

4GA017-003 SHEAR PLATE, VORTECH, ENGRAVED 1

4GA114-014 ASY, COOLANT ADAPTER, BBC, BLK 1

4GA014-014 WATER BLOCK, LEFT, BBC, BLK 1

4GA014-024 WATER BLOCK, RIGHT, BBC, BLK 1

4GA014-034 C/O PIPE, CLTN ADPT, BBC, BLK 1

7A375-326 3/8-16 X 3-1/4 SHCS, ZINC AL 4

7P100-106 -16 ORB MALE, -16 JIC MALE, AL 1

7U100-121 O-RING, 1.05 ID, 1.26 OD, -121, VITON 2

7U100-223 O-RING, 1.61 ID, 1.89 OD, -223, VITON 2

4MA018-075 CRANK PLY, 75T GT 8MM X 2.5W 1

7A250-127 1/4-20 X 1.25 FLT HD GR8 ZINC 2

7A312-876 5/16-18 X 7/8 FLT HD GR8 ZINC 6

7A375-126 3/8-16 X 1.25 HHCS, GR8, PLT 6

7A437-150 7/16-14 X 1-1/2 HXHD GR8 2

7A437-201 7/16-14 X 2.00" HXHD G8 5

7A437-226 7/16-14 X 2.25" HX HD GR8 3

7A437-651 7/16-14 X 6.5" HX HD GR8 1

7A437-700 7/16-14 X 7.00 HXHD GR8 ZINC 4

7B500-350 1/2-20 X 3.5" HX HD GR8 1

7B500-876 1/2-20 X 7/8 HX HD GR8 ZINC 1

7K375-040 3/8" AN WASHER 6

7K437-001 7/16" AN WASHER 10

7K500-064 1/2" AN WASHER 2

7PA375-500 SCREW, IDLER ADJUST, 5.00" 1

8R101-009 PULLEY RETAINER ASSY, V20/V30 COG 1

IMPORTANT: Before beginning installation, verify that all parts are included in the kit. Report any

shortages or damaged parts immediately.

PART NO. DESCRIPTION QTY

4GB218-040* ASY, BBC,LOW,V30-105,CCW 1

3GB218-010 RACE BRKT ASY, BBC, LOW 1

2G449-164 S/C ASY, V30-105A, CCW 1

4GB218-050* ASY, BBC,LOW,V30-112,CCW 1

3GB218-010 RACE BRKT ASY, BBC, LOW 1

2G479-064 S/C ASY, V30-112A, CCW 1

4GB218-060* ASY, BBC,LOW,V30-123,CCW 1

3GB218-010 RACE BRKT ASY, BBC, LOW 1

2G479-044 S/C ASY, V30-123A, CCW 1

* ALL 4GB218 PART NUMBERS INCLUDE 3GB218-010

DP/N: 4GB020-020v2.1, 2019-10-02

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DP/N: 4GB020-020v2.1, 2019-10-02

1

1. PREPARATION AND REMOVAL

A. Remove any accessories that may be

mounted to the passenger side of the engine.

B. Drain your engine coolant into a clean

containter. Remove any radiator hoses and

accessory belts attached to the water pump,

then proceed to remove the water pump from

the engine and set it aside. It will not be

reused.

C. Remove any crank pulley that may be

attached to the harmonic balancer. Set it aside

as it will not be reused.

Fig. 1-a: Remove accessories from passenger

side of the engine

Fig. 1-b: Remove water pump

Fig. 1-c: Remove any crank pulley attached to

harmonic balancer

NOTE: This race bracket assembly requires use

of a remote-mounted electric water pump.

A standard mechanical water pump will

not clear the cog belt.

WATER PUMP

NOTE: Be sure to chase and clean the threads

prior to installing the cog drive crank

pulley in a later step.

DP/N: 4GB020-020v2.1, 2019-10-02

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DP/N: 4GB020-020v2.1, 2019-10-02

3

Fig. 2-c: Install base plate to passenger side

cylinder head

CYLINDER

HEAD SCREWS

ENGINE

BLOCK

SCREWS

SLOTTED

HOLES

Use Loctite 242 (blue) on all

fasteners in this section.

A. This race bracket assembly can be used on

applications with or without a 3/8" thickness

crank trigger. Please refer to Appendix A and

Appendix B for a list of which hardware to

use for mounting the base plate. You will also

notice that the lower two mounting holes are

slotted. We have slotted these holes as this

race bracket is designed to work with 9.8" and

10.2" deck height engines.

2. RACE BRACKET ASSEMBLY INSTALLATION

Fig. 2-b: Preinstall all five 7/16"-18 screws and

7/16" washers

B. Locate one 7/16"-18 x 6.50" screw, four 7/16"-

18 x 7.00" screws and five 7/16" washers and

preinstall them into the base plate from the

rear, prior to mounting the base plate to the

engine. Use the assembly drawing located in

Appendix B for screw locations. Some screws

cannot be installed into the base plate after

the base plate is mounted to the engine,

therefore they must be preinstalled in this

step.

C. Using the proper base plate mounting

hardware for your application, loosely install

the base plate to the passenger side of the

engine. Once in position, torque the screws to:

For aluminum heads/block: 32 ±2 lb-ft

For iron heads/block: 50 ±2 lb-ft

BASE PLATE

MOUNTING

SCREWS

BASE PLATE

MOUNTING

SCREWS

SLOTTED

MOUNTING

HOLES

Fig. 2-a: Base plate mounting hardware

7/16"-18 x

6.50"

7/16"-18 x

7.00"

DP/N: 4GB020-020v2.1, 2019-10-02

2. RACE BRACKET ASSEMBLY INSTALLATION

F. Using three 3/8"-16 x 1.25" screws and three

3/8" washers, mount the manual belt tensioner

assembly to the supercharger as shown. Using

a 9/16" socket, torque the screws to 20 ±2

lb-ft.

Fig. 2-f: Install manual belt tensioner assembly

D. Locate the cog drive supercharger pulley and

pulley retainer assembly. With the long hub of

the pulley pointed towards the supercharger,

install it to the supercharger input shaft and

secure it using the provided pulley retainer

assembly. Be sure to use the provided square

key to keep the pulley from rotating on the

shaft. Torque the retainer screw to 35 ±2 lb-ft.

Fig. 2-d: Install cog drive supercharger pulley to

supercharger input shaft

LONG HUB TOWARDS

SUPERCHARGER

E. Using Appendix C as reference, assemble the

manual belt tensioner assembly. Lightly coat

both sides of the manual tensioner bracket

where the idler mount is installed. This will help

protect the mating surface of the manual

tensioner bracket, as well as keep the two

parts from potentially seizing together over

time. Also, apply anti-seize lubricant to the

threads of the idler adjustment screw.

Fig. 2-e: Apply anti-seize lubricant to manual

belt tensioner

ANTI-SEIZE

LUBRICANT

DP/N: 4GB020-020v2.1, 2019-10-02

5

G. Locate the six provided 5/16"-18 x .875" flat

head screws and the supercharger mounting

plate. Install the mounting plate as shown and

secure using the six 5/16"-18 x .875" flat head

screws. Use a 3/16" hex tool to secure the six

screws and torque them to 12 ±2 lb-ft.

Fig. 2-g: Install supercharger mounting plate to

supercharger

NOTE: Be sure to use anti-sieze lubricant

between the angled faces of the six

5/16"-18 x .875" flat head screws and the

six countersunk holes in the race bracket

assembly.

H. Locate the shear plate (engraved with "V")

and slide it over the top two screws. Next,

locate and install the three 5.00" length

spacers and slide them over three remaining

screws. Lastly, lift the supercharger and

supercharger mounting plate to the five

screws and begin to thread them in by hand.

Once all five screws are started, proceed to

torque them to 35 ±2 lb-ft.

Fig. 2-h: Install supercharger mounting plate and

supercharger to race bracket assembly

2. RACE BRACKET ASSEMBLY INSTALLATION

SHEAR PLATE

(ENGRAVED WITH "V")

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DP/N: 4GB020-020v2.1, 2019-10-02

7

A. Due to the routing of the cog drive belt, it will

be necessary to use the coolant adapter with

a remote-mounted electric water pump.

Fig. 3-a: Water pump ports

WATER

PUMP

PORTS

Fig. 3-b: Coolant crossover tube

Fig. 3-c: -16 ORB X -16 JIC male fitting

B. Locate the provided coolant crossover pipe

and two -121 (1.26" OD) o-rings and assemble

them as shown. Be sure not to damage the

o-rings during installation.

C. Locate the provided -16 ORB X -16 JIC male

fitting. This fitting should have an o-ring

already installed.

3. COOLANT ADAPTER ASSEMBLY INSTALLATION

INSTALL O-RINGS

Use white lithium grease on all

o-rings in this section.

DP/N: 4GB020-020v2.1, 2019-10-02

Fig. 3-d: Coolant port adapter

Fig. 3-e: Coolant adapter assembly

Fig. 3-f: Install coolant adapter assembly

D. The coolant adapter assembly includes two

water blocks. You'll notice on the back side of

each water block an o-ring groove. Keep this

in mind as you'll need to install the provided

-223 (1.89" OD) o-rings before installing the

coolant adapter assembly to the engine.

E. Install the -16 ORB X -16 JIC male fitting to

the water block with the threaded port. Next,

assemble the coolant adapter assembly as

shown, sandwiching the coolant crossover pipe

in between both water blocks. The o-rings on

the coolant crossover pipe create the seal

within the water blocks, therefore no additional

sealant will be required.

F. Using the four provided 3/8"-16 x 3.25" length

screws, loosely install the coolant adapter

assembly as shown, making sure that you

placed the -223 (1.89" OD) o-rings on the back

side of the water blocks. Using a 5/16" hex

tool, torque the screws to 22 ±2 lb-ft.

3. COOLANT ADAPTER ASSEMBLY INSTALLATION

NOTE: After the coolant adapter assembly is

installed, it is normal for the coolant

crossover pipe to be able to rotate within

the water blocks. The coolant crossover

tube cannot be removed unless one

water block is removed.

Use Loctite 242 (blue) on all

fasteners in this step.

INSTALL O-RING ON

EACH WATER BLOCK

DP/N: 4GB020-020v2.1, 2019-10-02

9

4. COG DRIVE SYSTEM INSTALLATION

A. Without crank trigger: Locate the cog

drive crank pulley and install it to the

harmonic balancer using the provided 3/8"-

16 x 1.25" length screws and 3/8" washers.

Using a 9/16" socket, torque the screws to

30 ±2 lb-ft.

Fig. 4-a: Install cog drive crank pulley

B. With crank trigger: Crank trigger thickness

should not exceed 3/8" thickness. Locate the

cog drive crank pulley and your choice of

crank trigger. Assemble the crank trigger

between the harmonic balancer and cog drive

crank pulley. Install the cog drive crank pulley

to the harmonic balancer using the provided

3/8"-16 x 1.50" length screws and 3/8"

washers. Using a 9/16" socket, torque the

screws to 30 ±2 lb-ft.

Fig. 4-b: Install cog drive crank pulley and crank

trigger

CRANK

TRIGGER

(RED)

Use Loctite 242 (blue) on all

fasteners in this section.

C. You'll need to raise the idler pulley on the

manual tensioner to allow space to install the

cog drive belt. Using a 3/4" wrench, loosen the

1/2"-14 x .875" screw on the front side of the

manual belt tensioner assembly. Next, using a

3/8" socket, turn the idler adjustment screw

clockwise. Leave the assembly loose at this

time.

Fig. 4-c: Raise the idler pulley to highest point

IDLER

ADJUSTMENT

SCREW

LOOSEN THIS

SCREW

NOTE: Take note of concentricity of the cog drive

crank pulley relative to the balancer. Due

to the variety of balancers on the market,

we suggest fabricating your own

alignment tool. Another option is to center

the cog drive crank pulley using a dial

indicator.

NOTE: Take note of concentricity of the cog drive

crank pulley relative to the balancer. Due

to the variety of balancers on the market,

we suggest fabricating your own

alignment tool. Another option is to center

the cog drive crank pulley using a dial

indicator.

DP/N: 4GB020-020v2.1, 2019-10-02

4. COG DRIVE SYSTEM INSTALLATION

E. Using a 3/8" socket, turn the idler adjustment

screw counterclockwise to apply tension the

cog drive belt. Once the belt is tensioned, use

a 3/4" socket to torque the 1/2"-14 x .875"

screw to 45 ±2 lb-ft.

Fig. 4-e: Tension the cog belt from the inside out

NOTE: Do not apply excessive tension to the cog

belt. By design, cog belts do not require

the same amount of tension as a ribbed

belt.

TIGHTEN THIS

SCREW

IDLER

ADJUSTMENT

SCREW

D. Locate the cog drive belt. For ease of

installation, install the cog drive belt around the

supercharger pulley, then around the crank

pulley. Some belts go on easier than others,

depending on your pulley combination. For

tighter belts, it may be necessary to rotate the

crankshaft while "pushing" the belt onto the

crank pulley.

Fig. 4-d: Loosely install cog drive belt

DP/N: 4GB020-020v2.1, 2019-10-02

11

5. OILING SYSTEM NOTES AND FINAL CHECK

A. Oiling systems will vary depending your

application, therefore it isn't specifically

addressed in this installation manual.

However, we have provided examples of

various ways the oiling system could be set

up. See Appendix E through G near the

back of this manual.

Fig. 5-a: Oil feed and oil drain

OIL DRAIN OIL FEED

NOTE: Consult an engine builder to help select

the correct oiling system for your

application.

B. Verify that all mounting hardware, cog drive

pulley hardware, and manual belt tensioner

hardware is secured. Verify that all coolant

and oil connections are secure.

Fig. 5-b: Secure all hardware

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13

APPENDIX A. DIAGRAM, PARTS LIST, RACE MOUNTING BRACKET

VIEW FOR REFERENCE

NOTE: REFER TO TABLES ON PAGE 4 FOR SELECTING PULLEYS AND BELT.

ITEM NO.

PART NUMBER

DESCRIPTION

QTY.

1

2A017-875-050

SPACER, .875"OD X .469"ID X .500"L

2

2A017-875-875

SPACER, .875"OD X .469"ID X .875"L

2

3

2A017-980-050

SPACER, .980"OD X .469"ID X .500"L

1

4

2A017-980-375

SPACER, .980"OD X .496"ID X .375"L

2

5

2A017-980-500

SPACER, .980"OD X .469"ID X 5.00"L

3

6

2A017-980-875

SPACER, .980"OD X .469"ID X .875"L

1

7

4FP116-020

IDLER W/BRNG ASSY, 50mm

1

8

4GA010-001

SLIDER, BELT TENSIONER 1

9

4GA010-002

SLIDER CAP, BELT TENSIONER

1

10

4GA010-003

TENSIONER SCREW MOUNT, 2.25" WIDE

1

11

4GA011-001

BELT TENSIONER PLATE, BBC

1

12

4GA011-002

BASE PLATE, BBC

1

13

4GA011-003

S/C MOUNTING PLATE, BBC

1

14

4GA017-001

BEARING SUPPORT, 17 MM, IDLER PULLEY, .500" ID X 1.85" L

1

15

4GA017-002

BEARING SUPPORT, 17 MM, IDLER PULLEY, .500" ID X .100" L

1

16

4GA017-003

SHEAR PLATE, VORTECH, ENGRAVED

1

17

7A250-127

1/4-20 X 1.25 FLT HD GR8 ZINC

2

18

7A312-876

5/16-18 X 7/8 FLT HD GR8 ZINC

6

19

7A375-126

3/8-16 X 1.25", HX HD, GR8

6

20

7A437-150

7/16-14 X 1-1/2 HXHD GR8

2

21

7A437-201

7/16-14 X 2.00" HXHD G8

5

22

7A437-226

7/16-14 X 2.25" HX HD GR8

3

23

7A437-651

7/16-14 X 6.5" HX HD GR8

1

24

7A437-700

7/16-14 X 7.00 HXHD GR8 ZINC

4

25

7B500-351

1/2-20 X 3.5" HX HD GR8, ZINC

1

26

7B500-876

1/2-20 X 7/8 HX HD GR8 ZINC

1

27

7K375-040

3/8 AN960 FLAT WASHER PLATED

6

28

7K437-001

7/16" AN WASHER

10

29

7K500-064

1/2" AN WASHER

2

30

7PA375-500

SCREW, IDLER ADJUST, 5.00"

1

31

8R101-009

PULLEY RET ASSY, V20 COG

1

32

4GA114-014

ASSY, COOLANT ADAPTER, BBC, BLK

1

33

4MA018-075

CRANK PLY, 75T GT 8MM X 2.5W

1

34

2G034-036

PLY, V20 COG 8MM, 36T 50mm

1

35

2A042-154

BELT, 8M PITCH, 154 TH, 1232 L, 50 MM WD

1

DP/N: 4GB020-020v2.1, 2019-10-02

APPENDIX B. DIAGRAM, ASSEMBLY, RACE MOUNTING BRACKET

12

±

2 FT-LB

50

±

2 FT-LB

(35

±

2 FT-LB FOR ALUMINUM HEADS)

30

±

2 FT-LB

NOTE:

1.

APPLY MEDIUM STRENGTH THREADLOCKER TO THREADS PRIOR TO ASSEMBLY.

1.

16

1

6

1

2

12

1

3

1

2

4

2

21

5

22

3

28

10

21

5

13

1

18

6

24

4

31

1

19

6

27

6

50

±

2 FT-LB

(35

±

2 FT-LB FOR ALUMINUM HEADS)

35

±

2 FT-LB

35

±

2 FT-LB

1.

REFERENCE TABLES ON PAGE 4

FOR BELT AND PULLEY

COMBINATIONS

5

3

OPTIONAL SPACERS FOR 3/8"

THICK CRANKSHAFT TRIGGER

WHEELS

OPTIONAL HARDWARE FOR 3/8"

THICK CRANKSHAFT TRIGGER

WHEELS

20

2

23

1

35

±

2 FT-LB

1.

22±2 FT-LB

32

1

1.

33

1

34

1

50

±

2 FT-LB

1.

Vortech Superchargers Big Block Chevy Race Bracket System Installation guide

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