Cliff's Quadrajet Parts and Rebuild Kits

Quadrajet Problem Solving => Quadrajet Parts and Numbers => Topic started by: mcx on February 26, 2021, 03:58:05 PM

Title: 7045562 1975 Pontiac 455
Post by: mcx on February 26, 2021, 03:58:05 PM

...picked this one up today, pretty nice condition. If someone could provide the factory original jetting  it would be appreciated. Thank you.

Title: Re: 7045562 1975 Pontiac 455
Post by: Kenth on February 27, 2021, 04:27:38 AM

Rochester made 7045562 #66 jets, 40J primary jets, secondary rods stamped DB #7047806, 1/2 turn preload on airvalve spring and #7029922 power piston spring.

Carter Mfd 7045562 has #67 primary jets and 41J rods. Also i have found Carter uses .034" idle tubes (Roch. .038") and .060" upper idle airbleeds (Roch. .068").

HTH

Title: Re: 7045562 1975 Pontiac 455
Post by: mcx on February 27, 2021, 09:14:30 AM

Thanks Kent
I’m breaking it all down now...It’s a Carter version with the casting “ warts” flaws in the secondary main body....this is the first time I have come across the aneroid with a flexible bellow and rod in the front cup, every other one has been the plastic plug and rod..the bellow looks to be in decent shape by appearances. I guess it’s a copper flex material?   Michael

Title: Re: 7045562 1975 Pontiac 455
Post by: mcx on March 01, 2021, 06:03:59 AM

This is what I have measured:
Airhorn
Main bleed  .069
Upper idle bleed  .0635
Secondary POE  ?
Main body
Idle tubes .035
IDCR .0465
Lower idle  bleed  .067
Lower Main bleed .0410
Base plate
Idle mixture holes .093
Idle air  bypass  .1100

Title: Re: 7045562 1975 Pontiac 455
Post by: mcx on March 02, 2021, 04:45:42 AM

More info:
Primary jets 67
Primary rods 42J
Secondary rods missing
Hanger missing