AN fittings use a 37 degree flare as the sealing surface. DO NOT use AN fittings with different flare-type fittings. This will cause leaks and damage to the fittings. Each AN size refers to the …

NPT fittings are listed by the "standard" inner diameter (I.D.) of the fitting. (We put "standard" in quotes because the I.D. of the fitting will vary, depending on the manufacturer.) The outer …

These torque values apply to AN connections only, not flared tube or compression fittings. When using aluminum and steel fittings, use the torque for the aluminum fitting. For best results, …

Related Products: Fittings & Plugs, Fuel Cells & Tanks, Fuel System Plumbing Kits, Hose & Line & Tubing, Hose Line Clamps & Brackets`, Other Air & Fuel Email Sign Up News & Events …

How do I adjust the pressure? To adjust and maintain consistent fuel pressure to your carburetor, use a Fuel Pressure Regulator.

The threaded holes are designed to use an NPT style fitting. Unlike AN fittings, NPT fittings seal on the threads. The location of the fluid port, in relation to the threaded hole, will not affect the …

Related Products: Carburetors & Accessories, Fuel Cells & Tanks, Fuel Pumps & Regulators, Fuel System Plumbing Kits, Hose & Line & Tubing, Other Air & Fuel

When passing through a panel, use Bulkhead Fittings or Grommets to protect the line. Return Lines should follow the pressure line back to the tank. If you’re running hard lines, it’s a good …

The LS4 is very unique in the LS family of engines. It was only used in front wheel drive (FWD) cars. On a stock engine, the following upgrades can improve performance and fuel economy:

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