BBC 454 crate engine

Development continues. Big-Block... - Chevrolet Performance

How to spot the difference between the bigblock and small block Chevy engines 😁 But seriously, the theme is "bigger" throughout. The big block is larger in size and weighs more, but produces more consistent power and torque to compensate for the weight. If you're still not sure what you have, the Siamese port exhaust on the small block is a dead giveaway. | ICT Billet LLC