Pros:
* Performance: A crate engine will likely offer more power and efficiency compared to your older engine.
* Reliability: A remanufactured transmission is a good way to avoid potential transmission issues.
* Modern Features: Some crate engines might come with modern features like fuel injection, which could enhance fuel economy.
Cons:
* Compatibility: You'll need to make sure the engine and transmission are compatible with your truck's existing mounting points, cooling system, and electrical system.
* Installation Complexity: Installing a new engine and transmission can be a significant undertaking and may require specialized tools and knowledge.
* Cost: Crate engines and remanufactured transmissions can be expensive.
Important Considerations:
* Engine and Transmission Compatibility: Make sure the engine and transmission are compatible with your truck's drivetrain. You'll need to check the mounting points, bell housing, and other specifications.
* Wiring and Electrical System: The engine and transmission may have different electrical requirements than your original setup. You may need to rewire or add components to make them work properly.
* Cooling System: The new engine might require a different radiator or cooling system setup.
* Exhaust System: You'll need a compatible exhaust system for your new engine.
* Fuel System: You'll need to ensure your fuel system is compatible with the new engine, particularly if it's fuel-injected.
* Professional Installation: Consider having a qualified mechanic install the new engine and transmission. It will likely be a complex job, and incorrect installation could lead to problems.
Recommendations:
* Research: Research the specific crate engine and transmission you're considering. Check their compatibility with your GMC 1500 and read reviews from other users.
* Professional Consultation: Consult with a qualified mechanic who has experience working on classic trucks like yours. They can help you assess compatibility and provide advice on installation.
* Prepare for the Installation: Be prepared for a potentially extensive and costly project. Factor in the cost of the engine, transmission, any required upgrades, and labor for installation.
In summary: Installing a Chevy 5.7L 350 crate engine and a new TH remanufactured transmission into your 1983 GMC 1500 is feasible, but it requires thorough research, planning, and possibly professional help.
