Genuine GM NOS 1965-72 Corvette Carburetor Float Assembly — Part #3877164
type: Unknown Type
Vendor: CorvairFarmer
Description:
GM 3877164 Float Assembly — Detailed Specification & Exact Carburetor Fitment
🔧 Technical Specifications
| Category | Details |
|---|---|
| GM Part Number | 3877164 |
| Group Number | 3.745 |
| Component Type | Carburetor Float Assembly |
| Float Material | Brass/Copper |
| Arm/Bracket Material | Steel |
| Carburetor Type | Holley 4‑barrel & Holley 3×2 (Tri‑Power) center carb |
| Condition (NOS) | New Old Stock, OEM GM |
🔍 Exact Holley Carburetor Fitment
Below is the precise list of Holley carburetor numbers that originally used GM Float 3877164.
Holley 4‑Barrel (4150/4160) Fitment
| Holley List Number | GM Application | Notes |
|---|---|---|
| List 3367 | 1965 Corvette 396/425 HP | Manual trans, high‑performance BBC |
| List 3418 | 1966 Corvette 427/390 HP | Holley 4‑bbl |
| List 3419 | 1966 Corvette 427/425 HP | High‑flow Holley |
| List 3810 | 1967 Corvette 427/390 HP | Holley 4‑bbl |
| List 3811 | 1967 Corvette 427/400 HP | Tri‑Power outer carbs used different floats; center uses 3877164 |
| List 4557 | 1970–1972 Corvette LT‑1 | Holley 780 CFM |
Holley 3×2 (Tri‑Power) Fitment
| Holley List Number | Carb Position | GM Application |
|---|---|---|
| List 4055 | Center Carb | 1967–1969 Corvette 427/400 HP Tri‑Power |
| List 4056 | Center Carb | 1967–1969 Corvette 427/435 HP Tri‑Power |
Important: Only the center carburetor on Tri‑Power setups uses this float. The end carbs use a different float design.
🚗 GM Vehicle Fitment Summary
| Year | Model | Engine | Carburetor Type |
|---|---|---|---|
| 1965 | Corvette | 396/425 HP | Holley 4‑bbl |
| 1966 | Corvette | 427/390 & 427/425 HP | Holley 4‑bbl |
| 1967 | Corvette | 427/390, 400, 435 HP | Holley 4‑bbl & Tri‑Power center carb |
| 1968–1969 | Corvette | 427/400 & 427/435 HP | Tri‑Power center carb |
| 1970–1972 | Corvette | LT‑1 350/370 HP | Holley 780 CFM |
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Location - Office shelf - right of computer - bottom right
