QuadraJet Secondary Metering Rods
Degrees of Secondary Air Valve Opening vs. Rod Diameter in Secondary Jet

Rod diameter measured in ten thousandths of an inch.(.0001")
Secondary Jets are all .1360" and non-removable from carburetor


I.D. Code

0 deg.

20 deg.

40 deg.

60 deg.

70 deg.

80 deg.

90 deg.

Tip length

GM Part #
                   

AD

1346

1280

1084

812

627

397

222

S

7033772

                   

CB

1347

1287

1197

997

897

547

297

S

7042335

BV

1347

1287

1197

1097

897

547

297

S

7040724

                   

DX

1320

1247

1090

600

400

300

300

M

1706471

DC

1347

1236

1129

1024

599

300

300

M

7047816

CC

1347

1236

1129

1024

599

300

300

M

7042356

                   

BY

1287

1217

1062

817

667

317

317

M

7040856

                   

DU

1280

1244

1075

847

547

337

337

M

1705995

DS

1310

1244

1075

847

547

337

337

M

1705661

DF

1339

1262

1075

847

547

337

337

M

7048512

DG

1342

1244

1075

847

547

337

337

M

7048890

CF

1347

1244

1075

847

547

337

337

M

7044775

                   

DM

1334

1281

1155

853

655

482

393

S

1705022

                   

CJ

1339

1244

1075

807

419

419

397

L

7045780

AX

1339

1244

1075

807

419

419

397

L

7033549

BB

1339

1244

1075

807

419

419

397

L

7034335

BW

1317

1247

1087

897

597

397

397

M

7040767

CA

1322

1277

1147

937

797

397

397

M

7042304

BH

1342

1290

1159

932

519

397

397

M

7035916

BM

1342

1290

1159

932

519

397

397

M

7037744

CM

1342

1294

1165

932

519

397

397

M

7045840

BG

1352

1294

1165

932

519

397

397

M

7034822

BF

1325

1315

1192

1021

891

639

397

S

7034400

BK

1325

1315

1193

1021

891

639

397

S

7037295

BJ

1333

1315

1193

1021

891

639

397

S

7036077

CS

1330

1287

1197

1097

897

687

397

S

7045924

BP

1337

1287

1197

1097

997

687

397

S

7038034

                   

CE

1347

1244

1075

847

547

410

410

M

7043771

BN

1329

1288

1147

957

793

503

410

S

7036671

BL

1329

1311

1188

1021

891

691

410

S

7037733

BE

1329

1311

1188

1021

891

691

410

S

7034377

                   

DA

1333

1244

1075

847

577

440

440

M

7046010

CY

1333

1244

1075

847

577

440

440

M

7046004

                   

CV

1332

1291

1154

927

527

527

527

L

7045984

AU

1345

1291

1154

927

527

527

527

L

7033655

CK

1345

1291

1154

927

527

527

527

L

7045781

AH

1345

1291

1154

927

727

527

527

M

7033812

                   

EJ

1355

1350

1200

1047

837

687

540

S

1708193

                   

EA

1339

1262

1172

1000

825

721

547

S

1708009

CR

1339

1262

1172

1097

997

747

547

S

7045923

BU

1347

1262

1172

1097

997

747

547

S

7040725

                   

CP

1320

1247

1090

879

743

578

567

M

7045842

DH

1332

1247

1090

879

743

578

567

M

7048992

ED

1332

1247

1090

879

743

578

567

M

1708187

BA

1332

1247

1090

879

743

578

567

M

7034337

AL

1349

1247

1090

879

743

578

567

M

7033680

CD

1351

1264

1107

755

567

567

567

L

7042719

DZ

1325

1290

1150

879

743

578

567

M

1707526

AV

1338

1292

1132

907

757

567

567

M

7033182

AP

1345

1292

1132

907

757

567

567

M

7033981

AJ

1345

1292

1132

907

757

567

567

M

7033628

AZ

1350

1292

1157

957

567

567

567

L

7033889

EG

1350

1292

1157

957

847

697

567

S

1708188

AK

1350

1292

1157

957

847

697

567

S

7033104

CH

1350

1292

1157

957

847

697

567

S

7045779

CX

1346

1294

1165

932

567

567

567

L

7045985

BZ

1352

1294

1165

932

567

567

567

L

7042300

AY

1352

1294

1165

932

567

567

567

L

7033830

EK

1340

1294

1165

932

790

567

567

M

1708240

EF

1340

1294

1165

932

790

617

567

M/S

1708188

CN

1340

1294

1165

932

790

617

567

M/S

7045341

AR

1352

1294

1165

932

790

617

567

M/S

7033171

                   

EE

1323

1250

1093

882

746

581

570

M

1708187

DR

1323

1250

1093

882

746

581

570

M

1705365

DV

1348

1294

1168

935

793

620

570

M/S

1706217

                   

BD

1332

1312

1168

939

805

577

577

M

7034365

                   

BC

1352

1294

1174

1015

901

599

581

M

7034300

                   

DN

1355

1297

1108

1019

904

602

584

M

1705370

                   

BT

1338

1292

1132

907

787

597

597

M

7040601

                   

EC

1350

1292

1157

847

697

610

610

M

1708109

                   

DJ

1337

1262

1172

1097

997

847

747

unique rod- taper continues down to 647

7048908

                   

CL

1350

1294

1176

984

667

667

667

L

7045782

AT

1350

1294

1176

984

667

667

667

L

7033658

                   

DL

1336

1260

1127

939

824

711

679

M/S

7048892

                   

EH

1325

1267

1137

945

829

721

686

M/S

1708188

DP

1325

1267

1137

945

829

721

686

M/S

1705353

                   

DB

1334

1294

1177

1010

907

797

697

S

7047806

BX

1352

1294

1177

1010

907

797

697

S

7040797

AN

1352

1294

1177

1010

907

797

697

S

7034320

                   

DT

1337

1265

1180

1100

1000

700

700

M

1705665

                   

CT

1337

1294

1176

984

849

774

774

M

7045983

AS

1350

1294

1176

984

849

774

774

M

7038256

CG

1350

1294

1176

984

849

774

774

M

7045778

                   

DW

1334

1294

1170

1010

883

874

874

L

1706243

DY

1337

1305

1191

1010

883

874

874

L

1707426

DE

1337

1305

1191

1010

883

874

874

L

7048092

                   

BR

1350

1294

1176

984

897

897

897

L

7038910

                   

AW

1351

1283

1209

1036

965

965

905

2-step tip

7033194

                   

CZ

1345

1292

1157

947

947

947

947

LL

7045986

EB

1345

1292

1157

947

947

947

947

LL

1708046

BS

1350

1292

1157

947

947

947

947

LL

7038911

                   

DK

1345

1298

1169

997

997

997

997

LL

7048919

                   

DD

1345

1298

1169

1047

1047

1047

1047

LL

7048091



All dimensions are in 1/10,000 of an inch

Tip Length Legend:

LL: Extra long power tips supply richest mixture starting at 60* of ari valve opening. Never use in performace applications using greater than 70* air valve opening.

L: Power tip starts at 70* air valve opening. Tip considered to begin at that part of the rod that is within .003" of rod's minimum diameter

M: Power tip starts at 80* air valve opening. Tip considered to beginat that part of the rod that is within .003" of rod's minimum diameter

M/S: Power tip starts at 80* air valve opening. Tip considered to begin at that part of the rod that is within .005" of rod's minimum diameter.

S: Power tip starts at 90* air valve opening.

This information was generously provided by Damon Nickle.....Much Thanks!!!