7042274 Quadrajet for 1972 400/455 with automatic. The 7042274 was originally the carb used on "high altitude" applications but this one is set up to run as a normally jetted carb for sea level with .073 jets, 42 primary metering rods and "DA" secondary rods.
It was completely refurbished by Cliff's High Performance at a cost of $367 at the time.
All the usual upgrades were done by Cliff such as rebuilding the throttle body with bronze bushings, recalibration, performance mods, upgrades for ethanol, and a running test prior to shipping. He also replaced the factory leaking bottom plugs with screw-in plugs
See the attached receipt for full specs.
It is natural grey finish because I didn't spring for the extra $125 for replating at the time due to time constraints.
I ran this carb on my Gramma's 1975 Firebird with both the 350 and the 455 in it and it ran great.
$375 plus shipping
Steve at
nk15268@hotmail.com