These GM Performance 5.7L LS1/LS6 aluminum engine blocks are direct replacements. Manufactured from 319-T5 aluminum, they use cast iron sleeves, the production oiling system, and 6-bolt main bearing caps. The Chevrolet Performance 5.7L LS1/LS6 aluminum engine blocks feature a 9.240 in. deck height and accept LS1/LS6-style cylinder heads only. The blocks feature a finished bore of 3.980 in. and do not include a provision for Active Fuel Management. Start your engine buildup with one of these GM Performance 5.7L LS1/LS6 aluminum engine blocks.
Specs:
Main Journal Type: OEM Engine Block Style: Stock/OEM standard deck Deck Height (in): 9.240 in. Cylinder Bore as Shipped: 3.890 in. Engine Block Material: Aluminum Main Caps Included: Yes Main Cap Material: Nodular iron Main Cap Fasteners Included: Yes Main Bearings Included: No Rear Main Seal Style: 1-piece Finished Cylinder Bores: No Raised Cam Location: No Cam Bearings Included: No Freeze Plugs Included: No Quantity: Sold individually.
