jim said:thank you, so what would a 454 bored to its max equate to in cubic inches.
thanks jim
most guys who want to significantly increase the displacement of a 454 big block swap a 4.25" stroker crank and a .030, or .060 over bore pistons and 6.385" connecting rods, that results in a 489-496 displacement with reasonable durability in most cases.
most of the 454 engines built that youll find in 1973 and newer vehicles were for trucks and motor homes and have mild cams and low compression, many have peanut port heads which are designed for low rpm torque.
match that with a carefully selected set of cylinder heads in the 270cc-315cc range and around 10.1-10.5.1 compression and a cam in the 235-250 duration range with a rear gear, and manual transmission or about a 3000rpm stall torque converter, to match the intended power band, and you get impressive increases in power.obviously the exact combo must be carefully researched so the parts used match the application and gearing, and getting from a stock 270hp-360hp in a low performance truck or motor home 454, to well over 450hp-600hp, with higher compression, better heads and a decent cam etc. is not difficult with the correct combo of parts
a 454 has a 4.251" bore and a 4" stroke
you can calculate a v8 engine displacement, with the following quick formula
most big block blocks will take a .060 over bore without issue some will take .100 but your almost sure to have very thin bore walls that won,t seal the rings well, and keep in mind many of those blocks have internal water passage rust issues after all many are 25-30 plus years old
bore x bore x stroke times 8 x .7854= displacement
example
a 4.310 " x 4.310" x 4.25" x 8 x .7854=496 cubic inches
read these links and sub links, as they contain a great deal more related info,
yeah! I know most of you will ignore the links, but the guys that don,t will generally have a big advantage
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