If you want to add some serious, impressive-looking muscle to a project vehicle--or your everyday driver--take a good look at Edelbrock's 350 c.i.d., 9.5:1 compression-ratio Performer RPM Air-Gap crate engines. They're built up from brand-new GM ZZ 350 blocks. With their 9.5:1 compression ratio and carefully chosen components, they should merrily deliver dependable performance on the gasoline available from your local station. In addition to the ZZ 4-bolt-main block, you get a forged-steel crank, powdered-metal connecting rods, flattop hypereutectic aluminum pistons, Performer RPM aluminum cylinder heads with stainless steel valves (2.02 in. intakes, 1.60 in. exhausts), a Performer RPM camshaft, a heat-isolating Performer RPM Air-Gap intake manifold, and an 800 cfm Edelbrock Thunder Series AVS square-bore carburetor with an electric choke. You also get Crane-manufactured aluminum roller rocker arms, an Edelbrock aluminum short-style water pump, Edelbrock aluminum racing valve covers, high-quality ARP head bolts, an MSD Blaster 2 Coil, an MSD Pro-Billet distributor designed specifically for these engines; a Milodon oil pan, a high-performance oil pump, and timing cover; a one-piece rear main seal, and an 8 in. harmonic balancer. The Performer RPM 7102 camshaft is tailored to match the 9.5:1 compression ratio, manifold, and carburetor. It has a 0.488 in. intake lift; 0.510 in. for the exhausts. Intake duration at 0.050 in. lift is 234 degrees; exhaust, 244. This cam produces a "lopey" idle and delivers serious power from 1,500 rpm all the way to 6,500 rpm--with a hefty 410 HP and 408 ft.-lbs. of torque on tap.