Bill Smith
Founder, 1929-2014
Speedy Bill
Since 1952
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Shop Oval Track Engines At Speedway Motors

Speedway Motors is the circle track engine authority! Whether you have a Ford or Chevy race motor, Speedway has the engine parts you need at the best prices around. Our large assortment of iron cylinder heads, performance camshafts and racing valve train components allows you to tailor your engine to any racing condition. Speedway also has a variety of durable claimer engine kits, oil pumps and oil pans to help keep costs down without sacrificing performance or reliability.

"Oval Track, Engine Blocks" Page 1 of 1

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  • Dart 31161111 Special High Performance Chevy Block, 4.00 Inch Bore
    Dart 31161111 Special High Performance Chevy Block, 4.00 Inch Bore
    SKU-30431611
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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 4.000" 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

    Dart SHP Block Instructions (PDF)

  • Dart 10320010P Iron Eagle Bare Chevy Cylinder Head, Straight, 200/64cc
    Dart 10320010P Iron Eagle Bare Chevy Cylinder Head, Straight, 200/64cc
    SKU-30420010
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    Using proprietary Speed Flow technology, Dart has developed more efficient port designs with improved velocity and flow capabilities. The combustion chambers and ports have been redesigned for greater breathing characteristics and more controllable combustion. Casting walls are cleaner and more consistent, resulting in better control over flow and heat.

    • Standard 23 degree valve angle
    • Standard port location and intake bolt pattern fit most manifolds
    • Pushrod holes enlarged for clearance with high ratio rocker arms
    • Heart shaped chambers improve combustion efficiency
    • Multi-angle intake seats and radiused exhaust seats dramatically increase airflow
    • Hardened exhaust seats compatible with unleaded gasoline
    • Manganese bronze intake valve guides and phosphorous bronze exhaust valve guides extend cylinder head life
    • Spark plug holes are machined for tapered seat 5/8" hex "peanut" spark plugs
    • Dual bolt pattern accepts flange mount and center bolt valve covers

    Iron Eagle Tech Notes (PDF)

  • Dart 31151411 Little M Series Small Block GM 305 Style Engine Block
    Dart 31151411 Little M Series Small Block GM 305 Style Engine Block
    SKU-3043151411
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    This Race Saver replacement for GM's 305 small block uses the same high-quality construction as all Dart race-series blocks.  As part of the Little M series of blocks, it features an extra thick stock deck height, stock cam height, stock pan rails, and four-bolt main caps.  The 305 has smaller cylinder bores and features full water jacket construction.

    • Replacement for GM's 305 small block
    • Premium cast iron 
    • Extra thick stock deck height
    • Stock pan rails
    • Four-bolt main caps
  • Dart Iron Eagle Assembled Chevy Heads, Straight Plug, 200cc/64cc
    Dart Iron Eagle Assembled Chevy Heads, Straight Plug, 200cc/64cc
    SKU-3042001
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    These complete Dart Iron Eagle Platinum cylinder heads are professionally assembled right here at Speedway Motors. We offer three different versions of each head (Street Ready, Flat Tappet Ready, Roller Ready) to perfectly suit your racing needs.

    • Standard 23 degree valve angle
    • Standard port location and intake bolt pattern fit most manifolds
    • Pushrod holes enlarged for clearance with high ratio rocker arms
    • Heart shaped chambers improve combustion efficiency
    • Multi-angle intake seats and radiused exhaust seats dramatically increase airflow
    • Hardened exhaust seats compatible with unleaded gasoline
    • Manganese bronze intake valve guides and phosphorous bronze exhaust valve guides extend cylinder head life
    • Spark plug holes are machined for tapered seat 5/8" hex "peanut" spark plugs
    • Dual bolt pattern accepts flange mount and center bolt valve covers

    Head Application Chart (GIF)

    Roller Ready - Please specify cam lift in comments section when ordering.

  • Dart 31161211 Special High Performance Chevy Block, 4.125 Inch Bore
    Dart 31161211 Special High Performance Chevy Block, 4.125 Inch Bore
    SKU-30431612
    x
                

    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

    Dart SHP Block Instructions (PDF)

  • Dart 31131111 Little M Chevy Block, 4.00 Inch Bore
    Dart 31131111 Little M Chevy Block, 4.00 Inch Bore
    SKU-30431111
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    For those wanting the ultimate cast iron small Chevy block, Dart's Little M is your best bet. The Little M features extra thick stock deck heights, stock cam height, stock pan rails, 4 bolt steel main caps, and they are already clearanced for a 3.875" stroke. These blocks have the common 350 main journal diameter with a 4.00" bore size. Two-piece rear main seal.

    304-31111 Instructions (PDF)

    Must ship truck. Truck Freight Shipping Charges Apply - click here for details


  • Dart 31365235 Special High Performance Ford Block, 4.000 Inch Bore
    Dart 31365235 Special High Performance Ford Block, 4.000 Inch Bore
    SKU-30465235
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    The SHP Ford Block is tailored to the most popular performance and racing applications. 9.5" (351) deck heights, as well as 4.000" siamesed cylinder bores. The valley is machined to accept factory roller lifter guides and retainer (spider). The Ford SHP block is the perfect block for those looking to get more out of their motor than a stock block can provide.

    • Brand new precision machined cast iron block
    • Scalloped outer water jacket walls improve coolant flow around the cylinder barrels to equalize temperatures
    • Priority main oiling system directs oil to the main bearings first for more dependable lubrication
    • Available with 351 (9.500") deck height
    • Provisions for OE roller lifters, dog bones and spider
    • Siamese bores 4.000" (unfinished) with extra thick cylinder walls
    • Extra thick decks ensure reliable head gasket seal
    • Blind tapped head bolt holes prevent water leaks
    • Steel 4 bolt main caps on #2, 3 and 4 with splayed outer bolts. 2 bolt main caps on #1 and 5
    • Can use most stock components and accessories
  • Dart 31131211 Little M Chevy Block, 4.125 Inch Bore
    Dart 31131211 Little M Chevy Block, 4.125 Inch Bore
    SKU-30431211
    x
                

    For those wanting the ultimate cast iron small Chevy block, Dart's Little M is your best bet. The Little M features extra thick stock deck heights, stock cam height, stock pan rails, 4 bolt steel main caps, and they are already clearanced for a 3.875" stroke. These blocks have the common 350 main journal diameter with a 4.125" bore size. Two-piece rear main seal.

    304-31211 Instructions (PDF)

    Must ship truck. Truck Freight Shipping Charges Apply - click here for details