Is the 400 small block Chev a good block?
This really applies to any block which you are having bored over. If a machine shop tells you not to worry about it or it doesn’t really matter, take your business elsewhere, because this shop is lazy or doesn’t know what they are talking about. Overall, the 400 SBC is a really good block.
When did the 4 bolt Chevy engine come out?
The strengthened “4-bolt” block also appeared in 1968, and it has been used, along with various heavy-duty “forged steel” crankshafts, in several high-output production options.
How big is the Chevy 400 sbc engine?
The engine shares the same length, width and height as other SBCs at approximately 28 by 26 by 27 inches respectively. The identical external measurements made the 400 SBC readily interchangeable with other Chevy engines, such as the 350 CID small block engine, across many of the Chevy and GMC truck and Chevrolet car lines.
How did the Chevy 400 get the extra displacement?
GM had to cast the block for the 400 CID engine differently to gain the extra displacement. To gain the extra 1/8-inch bore diameter, the cooling system water jackets between adjacent cylinders were eliminated on the 400 block.
Is the Chevy 400 short block engine for sale?
Used Overhauled Small Block Chevy 400 Short Block engine. Casting# 3951509. Used Overhauled Small Block Chevy 400 Short Block for Sale. Sold As-is. Pistons are used, have about 150 miles on them. We originally bore and honed the block for the customer. He wanted to put 350 heads on this block, but those do not fit.
The engine shares the same length, width and height as other SBCs at approximately 28 by 26 by 27 inches respectively. The identical external measurements made the 400 SBC readily interchangeable with other Chevy engines, such as the 350 CID small block engine, across many of the Chevy and GMC truck and Chevrolet car lines.
GM had to cast the block for the 400 CID engine differently to gain the extra displacement. To gain the extra 1/8-inch bore diameter, the cooling system water jackets between adjacent cylinders were eliminated on the 400 block.
Why did GM make the 4 bolt main?
Over the years, GM used the 4-bolt main as a marketing strategy to convince consumers that it was the right choice and it was for blocks made in the 1970’s. As consumers fell in love with the idea, engineers understood the concept, and GM’s car sales improved. Everyone was happy until the 1980’s rolled around and here’s what happened…