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.
1966 Chevrolet Impala Base, 4D Hardtop, 6.5L Eng, Not Available TransFACTORY OEM SERVICE PROCEDURE
1967 CHEVELLE
| Code | Displ. & Carb. | Comp. Ratio |
|---|---|---|
| CA, BC, BB, CB, BN, BO, CC, CD, BL, BM | 230" 6 1 Bbl. | 8.5:1 |
| CM, CN, CO, CP, CQ, CR, CS, CT | 250" 6 1 Bbl. | 8.5:1 |
| DA, DB, DI, DJ, DK, DN, DE | 283" V8 2 Bbl. | 9.25:1 |
| EA, EB, EQ, EE, EC | 327" V8 4 Bbl. | 10.25:1 |
| EP, ER | 327" V8 4 Bbl. | 10.5:1 |
| S | 327" V8 4 Bbl. | 11.0:1 |
| ED, EF, EG, EH, EJ, EK, EL, EM, EN, ET, EU, EW, EK | 396" V8 4 Bbl. | 10.25:1 |
Factory Service Tools
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Disclosure: Verified tool recommendations may earn an affiliate commission at no 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.
Rather have a pro handle this?
A certified mobile mechanic comes to your home or office. They bring the tools, you stay comfortable. No tow truck, no waiting room, no surprises.
Comes to youSame-day available12-month warranty
Get a Free QuoteNo obligation. See pricing before you book.