* 350 cubic inch (5.7L): This is the most readily available and arguably the most popular small-block. Parts are plentiful, inexpensive, and readily adaptable. Its relatively large displacement provides a good foundation for power, even without extensive modification.
* 383 stroker: Building a 383 stroker (increasing the displacement to 383 cubic inches) from a 350 is a popular upgrade. It offers significantly more torque and horsepower than a stock 350 with relatively straightforward modifications. This is a good choice if you want more power than a stock 350 but don't want to get into a completely different engine.
* 400 cubic inch (6.6L): The 400 offers substantial displacement right out of the box. While parts availability is less than the 350, it's still quite accessible, and the added displacement gives you a strong starting point for high-torque builds. It is a heavier engine, though.
Why not other small blocks?
While other small-block Chevy displacements exist (like the 283, 302, 327), they're generally less common, parts are harder to find (and more expensive), and they don't offer the same potential for easy upgrades as the 350, 383, or 400.
Ultimately, the "best" engine depends on:
* Your budget: A stock 350 will be the cheapest to acquire and build. A highly modified 383 or 400 stroker could be significantly more expensive.
* Your goals: Are you aiming for all-out horsepower, low-end torque, fuel efficiency (relatively speaking, of course!), or a balance of factors?
* Your skill level: A simple 350 build is achievable by many hobbyists, whereas a highly modified stroker demands more mechanical expertise.
Do your research on the specifics of each engine, and weigh your needs and resources before making a decision. Talking to experienced hot rodders in your area can also provide valuable insight.
