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$1,761.22
Dart 31161211 Special High Performance Chevy Block, 4.125 Inch Bore

Dart 31161211 Special High Performance Chevy Block, 4.125 Inch Bore
Chevy Small Block V8
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Dart 31161211 Special High Performance Chevy Block, 4.125 Inch Bore
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- Engineered to accept OEM roller rockers and cams
- The decks are parallel within .002" and has 350 main journals
- Block is cast from high nickel iron and has a priority main oiling system
- Designed for high-performance and heavy-duty applications producing up to 600 horsepower
- The ideal starting point for hot rodders, drag racers, circle track competitors, off-roaders, and high-performance marine enthusiasts
Details
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Dart's Special High Performance (SHP) small-block meets the need for an affordable, precision-machined cast-iron block with superior features. Designed for high-performance and heavy-duty applications producing up to 600 horsepower, the SHP block is the ideal starting point for hot rodders, drag racers, circle track competitors, off-roaders, and high-performance marine enthusiasts. The SHP block as all the features needed without spending the big bucks and having to wait on your machine shop.
- All new, precision machined
- Cast from high nickel iron
- Priority main oiling system
- Siamese 4.125" bores
- At 4.165" bore, .230" wall thickness
- Clearance for 3.75" stroke w/ steel rods
- Decks parallel within .002"
- Made in USA
- Blind head bolt holes
- 350 main journals
- Splayed 4-bolt center main caps
- Two piece rear main seal
- Accepts OEM roller rockers and cams
- Uses 1981-85 oil pans & dipsticks
- Accepts standard starters and bellhousings
Notes
- DOES NOT come with cam bearings. Order (5) qty. 304-3221 bearings.
- Cylinders will require final bore machining before assembly.
Specs
Dart SHP Block Spec Sheet (PDF)
Charts
Some parts are not legal for use in California or other states with similar laws/regulations
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