5.0” Bore Space, Raised Cam Blocks
The 1050 an 1070 series are 5.0” bore space splay cap blocks. The 1050 and 1070 series blocks are offered in a spread .110” or spread .160” main spacing configuration. The 1050 blocks are used for motor sizes up to 740 cubic inches. The +.400” high cam design is well suited for CFE, Eicke-Brodix, and Ray Franks cylinder heads. The 1070 blocks are very popular for all 5.0” bore space motors from 500 to 800+ cubic inches. The +1.0” high cam design is well suited for Alan Johnson, CFE, Eicke-Brodix, RFE, Sonny’s GM Hemi, and Sonny’s GM Wedge cylinder heads.
- Premium CN billet material
- CNC machined at CN Blocks
- Includes block, caps, main studs, and sleeves installed
- Standard deck heights available: 11.100”, 11.500”, and 11.625”
- Optional deck heights: 11.00” to 12.00”
- Head pattern to match cylinder heads
- Big Block Chevrolet main size
- Aluminum main caps
- Splay bolt main caps (front four)
- 1/2” main studs
- Cam heights: +.400” or +1.0”
- Cam size to match cam core: 2 1/8”, 55 mm, 60 mm, 65 mm
- Lifter pattern to match cylinder heads
- Lifter sizes: .904”, .936”, or 1.062”
- Jesel keyway bushings available
- No distributor on most 5.0” blocks
- Priority main based oil system
- Special CN Blocks cam oil cross
- #12 AN oil inlet
- Dry sump or external wet sump only
- Valley oil scavenge
- DRCE 10 3/8” oil pan pattern
- Dual starter bosses
Lightening Option Available
