What size bolt is a Chevy 63?
There isn’t a single bolt size that applies to all 1963 Chevrolet models. Bolt sizes vary by component and by the exact model and trim level. The correct size for any given bolt should be verified against the factory service manual or measured directly on the vehicle.
What bolt sizes matter on a 1963 Chevy?
Below is a guide to the main bolt categories you may encounter on a 1963 Chevrolet, covering what they secure and why sizes vary.
- Wheel lug studs and lug nuts
- Engine mounting bolts
- Transmission and bellhousing bolts
- Brake system fasteners (drum/rotor mounting, caliper bolts)
- Body and chassis fasteners (body mounts, fender/trim bolts)
Because these bolts serve different purposes, sizes and thread pitches vary widely; always verify with factory documentation or by precise measurement before replacing any fastener.
Determining the exact bolt size for your car
To ensure the correct bolt size for your specific 1963 Chevy, follow these steps:
- Identify the component and the exact bolt location (for example, wheel lug versus engine mount).
- Consult the factory service manual or the Chevrolet parts catalog for the exact model and trim year.
- If manuals aren’t available, measure the bolt diameter with calipers and determine the thread pitch with a thread gauge or by matching to standard bolt sets.
- Look for markings on the bolt head (such as grade markings) to confirm the required strength and length.
- Use OEM-recommended size, thread pitch, length and grade when replacing; for safety-critical items like wheel fasteners, stick to factory specs or reputable equivalents.
When in doubt, seek professional guidance to avoid damage or safety risks.
Summary
For a 1963 Chevrolet, there isn’t a universal bolt size. The correct bolt size depends on the component and the specific model. Always verify from the service manual, parts catalog, or a trusted supplier, and measure if needed to ensure proper fit and safety.
What is the bolt pattern on a 1963 Chevy C10?
6 Lug 6x5.5
1963-1987 Chevy & GMC C10 Premium 6 Lug 6x5. 5" Bolt Pattern Pro Suspension Disc Brake Kit - 600201 - Suspension Superstore.
What is the bolt pattern on a 1964 Chevy C10?
5x5 in
Wheel Bolt Pattern (in.): 5x5 in.
What size are the bolts on a Chevy bellhousing?
Bolt Thread Size : 3/8-16. Correct U.S.S.
What size are the spring bolts on a 63 leaf Chevy?
The stock Chevy 63” spring bolt holes are either 9/16” or 5/8”. If you use '99+ springs you'll probably need to buy some 5/8" bolts and drill your hangers and shackles.
