Our sample engine build is a 565-ci big-block Chevy based around a Dart Big M cylinder block and Dart Big Chief Pro 1 aluminum cylinder heads. Following the step-by-step procedures is designed to simplify the mating of all the important components in the engine...
Rod selection for this build was fundamental. Just as we went with a heavier duty option for the crankshaft for durability reasons, we matched that move with Scat’s Pro Sport 4340 forged H-beam connecting rods (PN 6653522A) with doweled cap alignment and a 7/16-inch ARP 2000 rod bolt upgrade.
We selected a set of Dart 18° Big Chief cylinder heads for this project. They are offered as cast or with your choice of Super Mod porting or Full Port CNC porting. To match our application we chose the Super Mod porting configuration.
Our Dart based 565 cubic inch big block Chevy was built for a 1990 Pontiac Trans Am running at Bonneville. It runs in the AA/Gas Coupe class where the current record is 263.603 MPH. A larger engine is likely more desirable in this class and room has been left to enlarge the engine if necessary. This particular combination was chosen because it permits 7000-plus RPM while keeping the mean piston speed below 5000 feet per minute. The Dart Big M block uses a 4.600-inch bore which leaves room for future enlargement while the 4.250 stroke maintains the desired piston speed […]
The high demand performance requirements of this particular engine application require a cylinder case of superior design and construction. We chose a Dart Machinery "Big M" cylinder block equipped with all the best design features and attending hardware for a high RPM, 1,000 HP+ package.