Cracked exhaust manifolds don't always scream for attention, but they sure steal power behind your back. On a Chevy big block, those heavy cast-iron manifolds take a beating from constant heat ...

Ron Shaver is no stranger to making horsepower, and to that point the big-block Chevrolet featured ... but I couldn't get there from here with the manifold and exhaust port." ...

In 1963, a new Chevrolet ... big-block. Wearing option RPO LS6, itwas rated at 425 hp at 5,600 rpm and sported aluminum cylinder heads, a9:1 compression ratio, an aluminum intake manifold, and ...

Custom builders looking to add performance and styling punch to their Big Block Chevy engine can turn to Holley for the Hilborn EFI-R Individual Runner Manifolds kit. “Based on the original ...

See All 31 Photos 12.The stock cast-iron 396 Chevrolet 325-horse ... See All 31 Photos 26.Big-block Chevelles are tight on the driver-side bank for exhaust manifold clearance.

However, big-block Chevy engines have been used in many ... Thanks to its free-flowing cylinder heads, intake and exhaust manifold ports, and better engine control electronics, the 8.1 Vortec ...

The RSX heads on the new 1,004-hp ZZ632 big-block Chevy ... for the 1.800-inch exhaust valves. This is a pump-gas street engine, so seals were installed on all the valves. GM gets all the cool ...

We are referring to GM ... big block involve a forged steel crankshaft with four-bold main caps, forged aluminum pistons, forged steel connecting rods, and a CNC-machined aluminum intake manifold.

See All 29 Photos 12.The stock cast-iron 396 Chevrolet 325-horse ... See All 29 Photos 26.Big-block Chevelles are tight on the driver-side bank for exhaust manifold clearance.