How much HP does a 454 stroker make?
In staying with the standard bore/stroke combination of 4.25/4 inches, however, it is not uncommon to yield power outputs of greater than 650 horsepower from the 454 in race engine configurations.
What is the most you can bore a 454?
They can safely be bored to 4.500 inches, which, even with the stock 454/502’s 4-inch-stroke crank, yields a displacement of 509 ci.
What can a 454 be stroked to?
Best of all, they’re ripe for the stroker treatment. Take a 454, add a 4.250-inch stroke crank along with some 6.385-inch rods and your displacement shoots up to 489 cubes. Now bore those cylinders out a touch, to say . 060-inch over and you end up with the venerable 496.
What kind of head does a 454 peanut have?
GM 236 Iron Peanut The casting number on this head defines it as a ’75-’87 454 pickup head. The valves on this head are almost a 1/4-inch smaller than a typical big block valve. This head would be best in applications where torque is everything and horsepower is of minimal concern.
When was the peanut port introduced on the Chevy 454?
For the uninitiated, peanut port refers to the small, oval-port heads used on the Gen-V 454 truck motors run prior to the introduction of the Gen VI in 1996. When Chevy introduced the Gen VI iteration, they replaced the small oval-port heads with conventional-sized oval ported that flowed considerably better than their smaller brethren.
What kind of head is a peanut port?
They are large oval port truck heads, the same as the early B/B heads, but with 116cc. chambers, or larger. Peanut ports are ULTRA small port B/B heads , with torque designed into their casting. A guy in town added a big cam to a 366 truck engine, W/ peanut port heads.
Why are peanut port heads good for big block?
Since head flow is one of the key components to power production, the peanut-port heads are often dismissed by big-block enthusiasts as little more than paper weights.