The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post

**truckster** · 03-14-2018, 02:33 PM

One of the car magazines - I think it was Hot Rod - did a comparison years ago where they built a SBC 400 and a BBC 402 as identically as they could - same CR, cam profiles, carburetion, exhaust, etc. Then they ran them and compared them. What they found was that, apples for apples, the big block is always going to make more power and the small block will always be more economical.

03-14-2018, 02:33 PM	#16
truckster Senior Member Join Date: Jan 2001 Location: Orem, Utah Posts: 7,798	Re: Engine power comparison / question One of the car magazines - I think it was Hot Rod - did a comparison years ago where they built a SBC 400 and a BBC 402 as identically as they could - same CR, cam profiles, carburetion, exhaust, etc. Then they ran them and compared them. What they found was that, apples for apples, the big block is always going to make more power and the small block will always be more economical. __________________ I have sworn upon the altar of God, eternal hostility against every form of tyranny over the mind of man. - Thomas Jefferson