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.
SYS.OK|MANUAL.DB● LIVE
HOMESERVICE MANUALSCHEVROLET1966CHEVY II BASE, NOT AVAILABLE, 2.5L ENG, AUTOMATIC TRANS, TRANS MFR CD THM400REPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE PERFORMANCETUNE-UPTUNE-UP - V8ENGINE IDENTIFICATIONNOTES
1966 Chevrolet Chevy II Base, Not Available, 2.5L Eng, Automatic Trans, Trans Mfr CD THM400
Engine Identification: Notes
1966 Chevrolet Chevy II Base, Not Available, 2.5L Eng, Automatic Trans, Trans Mfr CD THM400SECTION Notes
Letter suffix of Engine Production Code Number indicates engine displacement, horsepower, and other equipment. This number stamped on a pad just forward of right hand cylinder head as follows:
| Engine & Horsepower | Suffix Letters | ||
|---|---|---|---|
| 283" 195 HP (Chevy II) | PB, PD, PE, PF, PG, PL, PM, PN, PO, PP, PQ, PS, PV | ||
| (Chevelle) | DA, DB, DE, DI, DJ, DK | ||
| (Chevrolet) | GA, GC, GF, GK, GS, GT | ||
| 220 HP (Chevy II) | QA, QB, QC, QD, QE, QF | ||
| (Chevelle) | DG, DH, DL, DM | ||
| (Chevrolet) | GL, GW, GX, GZ | ||
| 327" 275 HP (Chevy II) | ZA, ZB, ZC, ZD, ZE, ZF, ZK, ZM | ||
| (Chevelle) | EA, EB, EC, EE | ||
| (Chevrolet) | HA, HB, HC, HF | ||
| 300 HP (Corvette) | HD, HE, HH, HO, HR | ||
| 350 HP (Chevy II) | ZG, ZH, ZI, ZJ | ||
| (Corvette) | HD, HT, HK | ||
| 396" 325 HP (Chevelle) | ED, EH, EK, EM | ||
| (Chevrolet) | IA, IB, IC, IG, IN, IV | ||
| 360" HP (Chevelle) | EF, EJ, EL, EN | ||
| 427" 390 HP (Chevrolet) | IH, II, IJ, IO | ||
| (Corvette) | IL, IM | ||
| 425 HP (Chevrolet) | ID | ||
| (Corvette) | IK, IP | ||
RENDER: 1.0x
NO RELATED
Recommended Tools & Savings
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Affiliate disclosure: We may earn a commission at no extra cost to you.
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.