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For Sale: Dart SHP Iron Block (Small Block Chevy)

Borowski Race Engines, Inc.



1545 Mound Road, Rockdale, IL View Map


Designed for high performance and heavy duty applications, the SHP block is the ideal starting point for hot rodders, drag racers, circle track competitors, off-roaders and high performance marine enthusiasts.

- Brand new precision machined cast iron block.
- Siamese bores 4.000" or 4.125" (unfinished).
- Standard or one piece rear main seals
- Extra thick decks ensure reliable head gasket seal.
- Blind head bolt holes don't go through to water jacket.
- Clearance for 3.75" stroke with steel rods.
- 350 main journals accept commonly available crankshafts.
- Splayed outer bolts on middle main bearing caps prevent cracks.
- Uses standard two piece rear main seal or option for one piece seal.
- Provisions for OE stock roller lifters and cams.
- Uses 1981-1985 stock style oil pan and dipstick.
- Uses stock stamped steel or plastic timing cover.
- All OE bolt holes for starter, clutch ball, etc...
- Priority main oiling system directs oil to main bearings first for more dependable lubrication.

These blocks are available in any level of finish from ready for final machining to fully machined to custom crate engine.

Optional fully prepped block ready for assembly includes:
-Square deck to height and CNC chamfer cylinders on our 4-Axis Rottler CNC
-Deburr entire block & main caps
-Hone cylinders w/torque plate
-Align-hone mains, hone lifter bores
-Final clean block and paint with primer
-Install Dart cam bearings & test fit cam
-Install oil galley and freeze plugs

Our 4-axis CNC boasts precision of 0.0002" and one thousanth of a degree. Check out this Instagram time-lapse video of a probe cycle: While we do love our CNCs, we use old school stone hones for a finish we believe to be superior to that typical of diamond hones.

The base price of $1,668 is for either size bore diameter with a standard rear main seal and includes free shipping in the continental US. The single rear main option is $1,749.

Please call us at 815-725-2727 for questions and pricing on finish machining, short blocks, long blocks or full crate engines.


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Ad #182500741
Expires on: 10/28/2016
Posted: 10/21/2016, ad expires in 4 days
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Ad posted by:
BorowskiRace (#327877)

Borowski Race Engines, Inc.
1545 Mound Rd
Rockdale, IL 60436
(815) 725-2727

Member Since: 10/23/2008
Phone Number: 815-725-2727

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106 Main Street, North Adams, MA 01247
Toll Free: 866.326.9227 • Tel: 413.663.3496 • Fax: 413.663.3615 • Email:

Execution Stats: 0.099 sec / 7.5 MB used / 7.6 MB peak