Build, photos and text by Mike Mavrigian This build features a GM LS platform, bored and stroked to 408 CID, with a 4.0305” bore and 4.000” stroke. A few of the notable elements include adapting Gen 1 smallblock Chevy valve covers to LS heads and a conversion to carburetion, this time using a [...]
General Motors may have given up on the Pontiac brand, but Edelbrock continues to roll out great new products for all those classic Ponchos still on the street. Their latest innovation is the new series of performance aluminum cylinder heads for 1965-79 389-455 cid engines. Unlike current Edelbrock RPM heads that feature Ram Air IV [...]
The new Edelbrock RPM Xtreme Cylinder Heads for 427 – 572 cid Big Block Chevy engines strive to provide race level performance in a streetable design envelope. CNC machined runners and combustion chambers achieve flow numbers nearly on par with the Victor series professional race head, while maintaining compatibility with off-the-shelf or even stock components [...]
EngineQuest® (EQ®) cast iron Magnum cylinder head is a power improved alternative to stock that offers better flowing intake and exhaust ports for enhanced horsepower and torque. Designed with a 172cc intake runner volume and 62cc combustion chamber, EQ’s Magnum heads have an exceptionally smooth casting for immediate bolt-on performance. Made in Australia, these [...]
We machine the block, balance the crank and check clearances. The Dart Iron Eagle 351W block is a precision-cast and raw-machined product of unparalleled quality. Dart provides a bit of extra deck height and minimal bore diameter, allowing the builder to precisely achieve desired dimensions. By Mike Mavrigian all photos by author [...]
Mittler Bros. Machine & Tool, a respected supplier of premium fabrication tools and racing components, is pleased to announce that it now offers steel billet crankshafts for racing and specialty applications. Mittler Bros. acquired the crankshaft segment of Grand Rapids, MI based Oliver Racing Parts. Cranks are produced for many diverse markets including oval [...]
This article provides insight regarding CNC machining of engine blocks. If you ever wondered about this technology, this article provides the answers. CNC Machining Pt 1 CNC Machining Pt 2
Today’s CAD programs offer definitive X-, Y- and Z-axis depictions of specific blocks, providing you have access to these programs.
While seasoned engine builders understand what the term “blueprinting” means, chances are most of their customers don’t. Too many neophytes think that balancing and blueprinting go hand-in-hand. They blindly assume that if the crank has been balanced, that must mean that the engine has been blueprinted.
All head studs were installed finger-tight. Our taller-than-OE Crane roller lifters required the use of spacer washers between the block and lifter buckets. The oiled roller lifters are inserted into the OE plastic lifter buckets. These register flat-to-flat, orienting the lifters properly for roller bearing operation at the lobes. With all four lifters snapped into [...]