Chevy Aluminum Blocks

various combinations of chevy, pontiac, olds, and mopar. That allow for an infinite number of direction in engine assembly
BBC
Stock Chevy Dimensions (really stock)

– steel or aluminum
– Stock bore spacing 4.840″, 4.900″ or 5.00″
– Deck height: 9.0″, 9.8”, 10.2”, 10.625″ or 10.7”
– Stock head bolt pattern
– Splay bolt main caps
– 1/2” main studs

BBC
Stock Chevy Dimensions (kinda)

– Stock bore spacing 4.840″,— or — 4.900″ or 5.00″
– Deck height: 9.0″, 9.8”, 10.2”, 10.625″ or 10.7”
– Head bolt pattern – Brodix, Dart or Pontiac style head
– Aluminum main caps
– Splay bolt main caps
– 1/2” main studs
– Some raised cam configurations +.400, +.100
– Some custom cam diameters 2 1/8”, 55 mm, 60 mm, 65 mm
– Stock lifter angle and spacing
– Lifter sizes: .842”(stock), or .904” – (mopar)
– Jesel keyway bushings


These blocks take Chevy in its own direction

BBC
Stock Chevy Dimensions (up to 900 CI)

– Bore spacing 5.30″
– Deck height: 9.0″, 9.8”, 10.2”, 10.625″ or —————– 12.00″
– Aluminum main caps
– Splay bolt main caps
– 1/2” main studs
– Multiple cam journal sizes available 65mm or 70mm
– Raised cam configurations + 1.917
– •No distributor
– Custom Lifter sizes
– •Dry sump or external wet sump only

These blocks take Chevy part way to Mopar HEMI
481X

•Deck height: 10.4”
•Big Block Chevrolet main sizing and spacing
•All 5 aluminum main caps are cross bolted
•9/16” Tool steel main studs, 1/2” side bolts
•Equal depth head studs for even clamping
•Improved oil system
•Standard 2 1/8 cam or 65mm big cam version available

Olds
•Deck height: 9.8″, 10.2”
•All 5 aluminum main caps are cross bolted
•9/16” Tool steel main studs, 1/2” side bolts
Mopar Hemi Mains and rods