248.362.1188
TECH LINE [M–F / 9A–6P EST]

Dart blocks and heads 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. For a step by step guide to identifying your Dart blocks and heads, view the link below:

View step by step guide (click here)

Due to the multitude of different applications and components this spark plug application chart is a recommended starting point only. Dart recommends contacting the spark plug manufacture for your specific application.

View spark plug chart (click here)

DART TECH LINE 1-248-362-1188  /  NGK TECH LINE 1-877-473-6767

Dart recommends using a Transdapt PN# 9420. This is a steel tube kit that includes the indicator. We recommend cutting the tube about one inch from the bottom of the stop to clear the splayed main cap.

No, the O-ring is not needed due to the precision CNC machined surfaces between the cap and block register. The machined surfaces will create a natural seal eliminating the use of the factory O-ring gasket.

No, you do not need to drill steam holes in your heads when using Dart blocks. Our SBC blocks are designed with scalloped water jackets that add additional cooling capacity around the cylinders eliminating the need for steam holes.

SHP SBC Block

Felpro #OS34510T, this is a one piece gasket with provisions for both drivers and passenger side dipstick.

Felpro #1881, this is a one piece gasket with steel core passenger side only dipstick, with stroker clearanced side rails.

Little M SBC Block

Felpro # OS34510T, this is a one piece gasket with provisions for both drivers and passenger side dipstick.

Felpro #1803, this is a four piece set

Felpro #1880, this is a one piece gasket with steel core, drivers side only dipstick, with stroker clearanced side rails.

Iron Eagle SBC Block (spread pan rails)

Felpro #1839, this is a four piece set.

LS NEXT LS Race Block

Felpro #1839 with ends trimmed off. Check with pan manufacturer to see if a gasket is required.

SHP LS NEXT Block

GM #12612350  reusable O-ring style

GM #12558760  std material type

Big M BBC Block

Felpro #1804 fits stock bbc bolt pattern

Felpro #1893 fits stock bbc bolt pattern with stroker clearanced side rails

Felpro #1884R is a one piece gasket fits stock bbc bolt pattern

Felpro #1863 has bolt holes only at the main centerlines for maximum stroke clearance / certain oil pans only.

Big M Aluminum Block

Felpro #1804 fits stock bbc bolt pattern

Felpro #1893 fits stock bbc bolt pattern with stroker clearanced side rails

Felpro #1884R is a one piece gasket fits stock bbc bolt pattern

Felpro #1863 has bolt holes only at the main centerlines for maximum stroke clearance / certain oil pans only.

Big M Race Series Block (spread pan rails)

Felpro #1891 & Felpro #1816 combined, to make a single set using one rail from each set. This will give the proper side rails to fit the block best. Bolt holes only at main center lines.

Ford SHP, Sportsman, Iron Eagle

302 based blocks

8.2” deck height and 8.7” deck height blocks

Felpro #1809 – this is a four piece set

351 based blocks

9.5” deck height and 9.20” deck height blocks

Felpro #1810 or #1827 (stroker notched)

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