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Archive for the ‘Engine’ Category

What’s the difference between R12 and 134a Air Conditioning Systems

R12 and 134a are refrigerants used in car air conditioning systems. R12 was used in most cars and trucks until 1995 when it was replaced with 134a. The main difference between the two is that R12 is the amount of time they remain in earth’s atmosphere, with the newer 134a significantly less than the old R12. Why […]

Where to buy restoration parts

Classic Body Parts or Restoration Performance is one of the largest dealers for Goodmark Industries and Dynacorn International and Sherman classic restoration parts in the country! We strive to meet all your classic car vehicles needs. Dont be fooled by other companies that offer monthly sells offering discounts at 15 – 25% off RETAIL price! […]

How to Choose a aftermarket Muffler

How to Choose a Muffler Your muffler is a crucial component of the exhaust system. The main purpose of a muffler is to quiet (or muffle) the engine sound as it exits the motor. As the sound travels down the exhaust, it enters the muffler and is routed through a series of tubes that control […]

What does an Exhaust X-pipe do?

What does an X-pipe do? X or H both are balance tubes which are meant to help the scavanging effect of your exhaust system. X-pipes are less invasive towards flow and tend to yield better Peak HP…H-pipes actually cause a bit more turbulence but to the effect of netting slightly more backpressure increasing TQ. Honestly […]

Can I run an overdrive transmission in my car without a computer

The answer is YES. Vehicles that came from the factory equipped with these transmissions did not use a computer to control the transmission. The confusion comes from the fact that the computer in the later models controlled the 12v circuit to the transmission for converter clutch lockup. You do not need a computer to run […]

Why use Zink In your Oil?

Passenger car and truck oils are formulated to reduce emissions and provide longer drain intervals. This has been done by increasing detergents and reducing anti-wear additives, but your race engine operating under high load and high RPM conditions needs high amounts of anti-wear additives (Zinc and Moly) to create a sacrificial additive coating that prevents […]

How to determine correct Carburetor CFM?

The carburetor itself has perhaps the most pronounced effect on fuel consumption. Since each carb comes pre-calibrated for a certain cubic inch and RPM range, the best place to start is with the right size carburetor. You can calculate the required CFM using following formula: Theoretical Carburetor CFM = (Engine CID * Maximum RPM) / […]

How to choose the correct stall speed for your converter

A normal converter has a stall, depending on vehicle, from 900 to 1,200 RPM. As the stall speed increases, the lockup increases, but with normal driving the vehicle will accelerate with small load fairly normally as long as the stall does not exceed 3,000. When max power is called for, the stall will flash to […]