ROCHESTER Model B Single Barrel: Overhaul: Reassembly

To assemble carburetor, use all new gaskets and reverse disassembly procedure.

Fig 1: Rochester Model B Carburetor

Courtesy of GENERAL MOTORS COMPANY

CARBURETOR ADJUSTMENT SPECIFICATIONS

Rochester Carb. No.

Idle Speed (Engine RPM)⁽¹⁾

Float Level Setting

Float Drop Setting

Idle Vent Setting

Man. Trans.

Auto. Trans.

7023017

450-500

1 9/32"

1 3/4"

.050"

7023021

450-500

1 9/32"

1 3/4"

.050"

7023011

450-500

1 9/32"

1 3/4"

.050"

7024009

450-500

1 9/32"

1 3/4"

.050"

7026019

450-500

1 9/32"

1 3/4"

.055"

7026017

450-500

1 9/32"

1 3/4"

.055"

7026011

450-500

1 9/32"

1 3/4"

.055"

7024009

450-500

1 9/32"

1 3/4"

.055"

7036009

450-500

1 9/32"

1 3/4"

.055"

7026017

500

1 9/32"

1 3/4"

.066"

7027011

500

1 9/32"

1 3/4"

.066"

7027029

500

1 9/32"

1 3/4"

.066"

7027009

500

1 9/32"

1 3/4"

.066"

7037009

700

500

1 9/32"

1 3/4"

.066"

⁽¹⁾	Manual transmission in Neutral and automatic transmission in "D".