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Dart Special High Performance Chev SB Iron Block
These new blocks give you all the features you need to build powerful and durable engines at affordable prices. Cast from high nickel iron for superior strength, and features Siamese cylinders with 4.125" standard bore sizes and can safely be bored to 4.165". Cylinder walls are a minimum of .230" thick at 4.165" bore. Machined using precision digital CNC equipment and is virtually ready to assemble right out of the box after a final cylinder hone. Decks are parallel within .002", lifter bores, cam and main tunnels are finished. Designed for compatibility with stock components, so no costly special parts are required for assembly.
- Premium high strength, high nickel cast iron
- Splayed 4-bolt center three main caps
- Priority main oiling system
- Blind head bolt holes
- Siamese bores 4.125" (unfinished)
- At 4.165" bore cylinder walls are .230" thick
- Clearance for 3.75" stroke w/steel rods
- Decks are even and parallel within 0.002"
- Two piece rear main seal
- Provisions for OE stock roller lifters and cams
- Uses 1981-85 stock style oil pan and dipstick
- Uses stock stamped steel or plastic timing cover
- All OE bolt holes for starter, clutch ball, etc.
- Made in the USA
- Brand new precision machined block
Part Type: Engine Block
Application: Chevrolet Small Block
Engine Block Style: Aftermarket
Engine Block Material: Cast Iron
Main Journal Type: 400 Main
Deck Height: 9.025"
Cylinder Bore Diameter: 4.125"
Finished Cylinder Bores: No
Main Caps Included: Yes
Main Cap Material: Ductile Iron
Main Bolt Style: 4-Bolt
Main Cap Fasteners Included: Yes (#1 & #5: 7/16", #2, #3, #4, 3/8" Splayed)
Lifter Bore Diameter: .842" (Must use .300" taller lifters if using link bar lifters)
Provisions for OE Roller Lifters: Yes
Main Bearings Included: No
Rear Main Seal Style: 2-Piece
Oil Pan Rail Type: Stock/OEM
Raised Cam Location: No
Cam Bearings Included: No
Freeze Plugs Included: No
Manufacturer: Dart Machinery
Manufacturer's Part Number: 31162211
Weight: 175.0 lbs.
Warranty: Dart Machinery, Ltd. warrants to the original purchaser its products to be free from defects in materials and workmanship within 6 months from the date of sale. Dart's obligation under this warranty shall be limited to repair or replacement, at Dart's option, of any parts or products which may prove defective under normal use. This warranty shall not apply to any parts or products which hhave been subject to accident, negligence, alteration, abuse, or misuse.
Quantity: Sold as Each
*This Block Qualifies for Free Freight!
(48 U.S. Contiguous only. Residential/Lift Gate Fees may apply.)
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