Tech Tips

Identifying Dart Heads and Blocks

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Dart heads and blocks are stamped or cast with various numbers that can tell you quite a bit about the part.  Knowing how to read and interpret these markings can save a lot of time and hassle when you need to know exactly what you’re working with. (more…)

49cc Cylinder Heads – What Pistons to use?

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Tech Tips

Dart’s Iron Eagle Platinum small block cylinder heads with 49cc combustion chambers are very popular among oval track racers competing in classes that require flat top pistons, but what pistons to use? (more…)

Oiling System 101: To Restrict or Not to Restrict?

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Tech Tips

With Dart’s vastly improved oiling system, the need to “band-aid” the oiling system with a high volume oil pump is a thing of the past. Using a standard oil pump and today’s lifters, without restrictors, makes engine assembly easier and eliminates the guess work of determining restrictor size. (more…)

Pipe Plugs – NPT Threads in Dart Blocks

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Tech Tips

The oil galleries in all Dart blocks are threaded with NPSF (National Pipe Straight Fuel) threads. Most OEM blocks use this same thread for pipe plugs. It’s important to know that the NPSF standard is a straight thread, not tapered. (more…)

Coating Conflicts

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Tech Tips

Dart’s Molybdenum Disulfide based coatings, such as the DC-4 lubricating coating often used on camshafts, are an excellent way to increase load capacity and improve durability… but you need to be selective about the type of break-in oil used on an engine that employs these coatings. (more…)

Roller Lifters for SHP Blocks

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One of the great features of the Dart Special High Performance (SHP) small-block is its provisions to use OEM hydraulic roller lifters. (more…)