* Specific Crate Engine: Different crate engines have different dimensions and may require different mounts. The manufacturer's specifications for your *specific* crate engine are crucial. Look for information on the engine's dimensions, particularly the bellhousing and engine block mounting points.
* Transmission: The type of transmission (automatic or manual, and the specific model) significantly affects motor mount selection. The transmission's placement influences the engine's position and thus the required mounts.
* Frame Modifications: Has the truck frame been modified? Any modifications to the frame will impact which mounts will work.
* Aftermarket Mounts: Many aftermarket companies produce motor mounts for C10s with various engine swaps. These offer varying degrees of performance and adjustability.
How to find the right mounts:
1. Check the Crate Engine Manufacturer's Documentation: This is your primary source. The documentation should specify the correct motor mounts or at least provide dimensions that you can use to cross-reference with aftermarket suppliers.
2. Contact a Supplier specializing in C10 parts: Companies that specialize in classic Chevy truck parts will have experience with this swap and can guide you towards the correct mounts based on your engine and transmission.
3. Consult a C10 Forum or Online Community: Search online forums dedicated to classic Chevrolet trucks (like classiccars.com or similar). Experienced owners can offer invaluable advice based on similar projects. Be sure to provide all relevant details (engine, transmission, etc.).
In short, you need to start with the *specific* details of your crate engine and transmission. Don't assume any general-purpose mount will work. Improper mounts can lead to vibrations, damage, and even engine failure.
