ATK Engines ATK HP101M Chevy 383 Stroker Mid Dress Engine 460HP

The ATK HP101M sits between ATK's bare and fully dressed 383 stroker builds, carrying the same 460-hp, 490-lb-ft rating as the base engine but with a step more hardware already in place. What mid-dress means here This build's rotating assembly, a Scat nodular-iron crank and Scat I-beam rods, uses ARP 8740 rod bolts, under forged 10:1-compression pistons and the same Dart SHP aluminum heads as the base engine, 72cc chambers with valves at 2.02/1.60. The balancer, intake manifold, and distributor ship installed here, along with the OE-style water pump. The carburetor and fuel pump remain on ATK's recommended list for the installer, along with the ignition's spark plugs and wires. What to check before you buy As with ATK's other big-cam 383 builds, this one will not pull the vacuum a power-brake booster needs. Confirm the exact intake and distributor brand with us before ordering. A set of roller rockers and a double-roller timing chain finish out the valve gear. Common questions Is the carburetor installed? No, only the intake, distributor, balancer, and water pump are installed on this mid-dress build. Will it work with power brakes? No, this cam is not expected to supply enough vacuum for one. What's the power rating? 460 hp, 490 lb-ft, the same numbers as ATK's base version of this engine. California requires BAR compliance for engine swap installations.