Quadrajet
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==Q-jet variants== | ==Q-jet variants== | ||
| − | A major change to the Quadrajet was implemented for the 1975 model year. These newer carburetors are considered "Modified Quadrajets" or "Mod Quads". In addition to the casting revisions that resulted in a somewhat physically larger carburetor, the primary metering rod length is different (shorter) than those from '74 and older Q-jets. They were also equipped with a self-contained choke mechanism that no longer relied on a choke coil mounted on the intake manifold above the heat crossover port. Also the number "1" was added to the beginning of their identification numbers. | + | A major change to the Quadrajet was implemented for the 1975 model year. These newer carburetors are considered "Modified Quadrajets" or "Mod Quads". In addition to the casting revisions that resulted in a somewhat physically larger carburetor, the primary metering rod length is different (shorter) than those from '74 and older Q-jets. They were also equipped with a self-contained choke mechanism that no longer relied on a choke coil mounted on the intake manifold above the heat crossover port. Also the number "1" was added to the beginning of their identification numbers. Both style carbs (divorced choke and integral choke) were produced concurrently. |
Quadrajet carburetors were also built under contract by Carter. This seems to have happened at times when Rochester's facility could not keep up with demand. Carter-built Quadrajets will have the name "Carter" cast into them, but are functionally identical to the Rochester-built equivalent. The "newest" Q-jets to be made were built for, and sold by Edelbrock. There were several versions made, for both stock replacement and "performance" applications. One version was specifically intended as a replacement for Carter Thermoquad carburetors. The Edelbrock Q-jet carbs have been discontinued, although at this time Edelbrock still supplies some tuning and replacement parts. [[Quadrajet#Power enrichment|Return to top]] | Quadrajet carburetors were also built under contract by Carter. This seems to have happened at times when Rochester's facility could not keep up with demand. Carter-built Quadrajets will have the name "Carter" cast into them, but are functionally identical to the Rochester-built equivalent. The "newest" Q-jets to be made were built for, and sold by Edelbrock. There were several versions made, for both stock replacement and "performance" applications. One version was specifically intended as a replacement for Carter Thermoquad carburetors. The Edelbrock Q-jet carbs have been discontinued, although at this time Edelbrock still supplies some tuning and replacement parts. [[Quadrajet#Power enrichment|Return to top]] | ||
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