Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSGMC1984VALUE VAN P3500, 7.4 W, AUTOMATIC, 475/M40REPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE PERFORMANCETUNE-UPDISTRIBUTOR APPLICATION & SPECIFICATIONSDISTRIBUTOR SPECIFICATIONSNIPPONDENSO DISTRIBUTORS
1984 GMC Value Van P3500, 7.4 W, Automatic, 475/M40
NIPPONDENSO Distributors
1984 GMC Value Van P3500, 7.4 W, Automatic, 475/M40SECTION NIPPONDENSO Distributors
DISTRIBUTOR ADVANCE SPECIFICATION (AUTOMATIC) (1)
| Part No. | Rot. (2) | Deg. | RPM | Deg. | RPM | Deg. | RPM | ||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| 94230979 | CC | 2 | 1600 | 10 | 2600 | 16 | 3900 | ||||
| 94230990 | CC | 2 | 1600 | 10 | 2600 | 16 | 3900 | ||||
| 94240905 | CC | 2 | 1600 | 10 | 2600 | 16 | 3900 | ||||
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DISTRIBUTOR ADVANCE SPECIFICATION (VACUUM) (1)
| Part No. | Degrees | In. Hg | Degrees | In. Hg | ||
|---|---|---|---|---|---|---|
| 94230979 | 2 | 3-4 | 18 | 8-11 | ||
| 94230990 | 2 | 3-4 | 12 | 6-8 | ||
| 94240905 | 2 | 2-4 | 18 | 6-9 | ||
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RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.