Features
- 4.185" finished Bore
- CNC- Machined cast-iron block
- Deck Plate Honed
- Align-honed main bearing
- Deck height 9.240" (production)
- Max Stroke 4.25"
- Billet-steel main caps
- Standard 4.400" bore spacing
- Extra-thick siamese cylinder bores
- LS7-style, 6-bolt dowel-located billet main bearing caps
- Wet-sump and dry-sump oiling capability
- Production-style deep-skirt head bolt holes
- Maintains production exterior accessory mounting provisions
- Front motor plate mounting holes added
- Additional material cast around cam bearings for greater streng
- 8 mm exterior/interior fifth- and sixth-head bolt holes
- Standard 0.842" lifter bores
- Accommodates all LS oil pumps and oil pans
- External oil pump feed (rear of block)
- Main web bay-to-bay breathing holes to support 1500+ horsepower
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