Dart Machinery’s Dick Maskin has been in the depths of professional drag racing engine building for decades; most notably in the hotly contested ranks of Pro Stock, where he’s been involved in many championship teams. We say that to let you know, in case you didn’t already, that he’s a legit racer, and he knows what racers want. His company, therefore, caters to the hardcore racer, but is also careful to offer pretty much anything the hardcore street crowd needs to.
Dart’s Big M Was Designed For Big Cubes In Mind
For years now, Dart has offered the Big M engine blocks for the big-block Chevy – cast-iron blocks with features unmatched in any stock factory block that allows you to stick in longer-stroke crankshafts and bigger-bore pistons for big cubic-inches – plus extra iron where it counts for strength, better oiling systems designed for more intensive use, and just overall more convenient features that allow an engine builder to do it his way. Then, a few years ago, Dart released its Race Series Tall-Deck Big-Block Chevy iron block. This one was far more hardcore than the Big M, offering spread bore spacing options (4.840 to 4.900 inches), a .600-inch raised cam core, spread oil pan rails (DRCE style), the same priority main oiling system as the Big M, and a very high 10.600- to 11.100-inch deck heights that allows the use of long rods with a big stroker crank. It would accept a crank stroke of 5.500-inch in order to build a real monster motor.
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The oil pan rails were stretched .750-inch to
DRCE size. Dart makes its own steel 4-bolt main caps in house. The three
center caps have splayed outer bolts that anchor them to more meat of
the block, the stronger part, and the front and rear caps have vertical
bolts so standard oil pans will clear. The rear cap uses a traditional
two-piece seal.
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