GM 3877141 Carburetor Needle Unit Rochester carburetors

$29.99

type: Unknown Type
Vendor: CorvairFarmer

Description:

GM 3877141 — (Group 8.814)

Group 8.814 = Carburetor Needle Unit (Rochester) This group is used for metering needles, idle needles, and choke‑related needles inside Rochester carburetors.

GM 3877141 appears in mid‑1960s GM parts books as a universal Rochester service needle, used across multiple divisions.

📌 Confirmed Applications (Based on GM Group & Part Catalog Cross‑Reference)

GM 3877141 is used in Rochester carburetors installed on:

  • Chevrolet (1962–1967)

    • 194 I6

    • 230 I6

    • 283 V8

    • 327 V8

    • Rochester 1‑bbl & 2‑bbl variants

  • Pontiac (1963–1967)

    • 215 I6

    • 230 I6

    • 326 V8

    • 389 V8

    • Rochester 2GC & 1‑bbl units

  • Oldsmobile (1963–1967)

    • 330 V8

    • 425 V8

    • Rochester 2GC carburetors

  • Buick (1963–1967)

    • 225 V6

    • 300 V8

    • 340 V8

    • Rochester 2GC carburetors

  • Chevy Truck (1963–1967)

    • 230 I6

    • 250 I6

    • 283 V8

    • Rochester 1‑bbl & 2‑bbl

📌 Functional Use Inside Carburetor

GM 3877141 is used as a metering/idle needle in Rochester carburetors, specifically:

  • Idle mixture needle

  • Metering needle

  • Choke pull‑off needle (certain 1‑bbl units)

  • Fuel metering needle for low‑speed circuits

This is why it appears across multiple divisions — Rochester carburetors were shared widely.