The legendary 1969 ZL1 427 big block Chevy had a bore/stroke of 4.25" x 3.76" , while the newer LS7 small block has a bore/stroke of 4.125" x 4" , both of which feature aluminum heads and block .
4.310 bore X 4.250 stroke -- basically a 454 bored .060 over with a 1/4 inch longer stroke crankshaft as compared to the 4.250 stock bore size and 4.000 inch stroke of a 454. Just as an aside FYI, 427's have the same stock bore size as a 454's but have a 3.760 stroke.
The bore and stroke of a 427 is 4.25 x 3.76. The formula for the area of a cylinder is pi times the radius squared times the stroke of the crank times the number of cylinders. So, 4.25/2=2.125*2.125*3.14159*3.76*8=427. If the cylinders are bored .030" oversize, then: 4.28/2=2.14*2.14*3.14159*3.76*8=433
Chevy used to make a 427 big block, but the 427 small blocks are made from aftermarket parts.
Yes you can,A 427 is a 454 block with a 3.7 stroke 396 crank and 427 pistons
rule of thumb here anything under 400 ci adds 5 cubic inch per .03 over bore. at 400 and over cubic inch, every .03 overbore adds 6 cubic inch. heres a formula bore X bore X stroke X number of cylinders x .7854 = cubic inch 427 chevy 4.25 bore 3.76 stroke =426.72 CI
NO! The 427 Chevy engine was not sold by GM until 1963. The 427 is a big block engine and the very first big block was the 348 introduced in 1958. The 409 was introduced in 1961. The 427 in limited production only in 1963. The 427 was later released again in 1966 as a production engine. The largest engine every offered in the 1957 Chevy was the 283 V8. You could order this engine with mechanical fuel injection in 1957.
Chevy's 427
1966
A 427 bored .60 over is 438.8572417 or basically a 439.
Yes.
is a V8 big block engine in a Chevy or ford in the 1960's to the 1970's