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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) / 3456
This formula assumes 100% volumetric efficiency at redline, but street motors are more likely to fall in the range of 80 – 95%, depending on head/cam/intake/exhaust selection. Therefore, we should factor that into the equation by using an additional formula: Read more »

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 the stall speed before lockup occurs. If a vehicle is doing 30 mph at 1,500 RPM in second gear, when floored, the RPM will flash to 3,000 before beginning to pull hard. The pros and cons to this are important considerations. When the stall flashes, it will throw the engine into the power band and pull much harder than a conventional converter. The con is that, with the stock converter, top speed in second may be 50 mph at 5,500 RPM, and with the stall converter it will be around 7,200 at the same speed. The shift points will have to be considered as to speed to stay within RPM limits.

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Installing TrimParts molded carpet

First, remove your TrimParts molded carpet from the box. Lay it out in room
temperature, or above, for a recommended 12 to 24 hours. This allows the carpet
to relax and regain its shape. Next remove all sill plates, seat belts, kick panels
and driving pedals if mounted from the floor. Then remove the front and rear
seats. After all objects are removed from the floor, extract the old carpeting. Do
not discard Read more »

Classic Car Make / Model Identification Guide

During the 1960’s and 1970’s, the automakers used letter codes to designate which car platform the models were built off of.  Unlike today, there were basically small, midsize and large cars with perhaps a special model of each available.  Following is a chart which you can use to determine which model and platform your car was build off of, and that will help you identify which parts will fit your particular application.

Mopar “A”-Body

1963-76 Dodge Dart,

1971-72 Dodge Demon,

1973-76 Dodge Dart Sport Read more »

What Does GM, Ford or Mopar Licensed Restoration Parts Mean?

Licensed restoration parts for cars and trucks are dedicated to manufacturing the highest quality products offered in the restoration industry by using the original tooling under licensing when tooling is available. Otherwise. Read more »

GM Bench Seat Upholstery Installation

Bench seats are pretty straight forward, but the backrests can be difficult to get lined up and matching the pleat pattern on the cushion. Take a look at our video to learn some new tricks from professionals at PUI to get the best looking bench possible!

GM Swivel Bucket Seat Installation

When GM designed swivel buckets, they came up with a very attractive seat, however they are VERY difficult to install. PUI highly recommends you have a professional upholstery shop do this for you Read more »

Brake Pedal Diagnostics


This is a list of common brake pedal diagnostics that we have put toghther to help you troubleshoot any brake pedal problems you might have.

CAUSE
REASON
Bleeder screws on calipers not on top.

The bleeder screws on calipers must be at the 12:00 position on the caliper to allow all the air to escape during bleeding. A very common mistake installers will make is to reverse the side the caliper goes on giving you a situation where the caliper bleeder screw is facing down. It’s also common to use the wrong caliper on a bolt on disc kit giving a situation where the bleeder hole is shifted from the 12:00 position producing a pocket of air at the top of the caliper bore which can not be dislodged. Check your bleeder hole orientation.
A defective master cylinder which does not hold pressure.
If brake fluid bypasses a pressure seal on a master cylinder you will get a pedal that fades. To test for this obtain two inverted flare plugs at an auto parts store Read more »

What Type of Quarter Panel do You Need?

With so many reproduction options on the market, knowing exactly what you need to repair or replace your sheet metal will save time and money! Learn the difference between fulls, skins and patch panels. Get it right the first time.

Full Quarter Panel is made just like the panels that are welded to your car when it was first produced. These panels reach all the way to each edge of the rear quarter panel area, including the trunk and door edges, and reach to the roof line. just like the factory-original panels did for your particular model. For Dodges and Plymouths, the door jamb was never part of the original quarter panels.
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Diagnosing Common Brake Problems

How to Diagnose a Problem

  1. Disconnect the brake lines from the master cylinder while leaving the cylinder on the vehicle.
  2. Obtain solid plugs for the master cylinder outlets with the correct threads.
  3. Plug both master cylinder outlets and try the pedal. If the pedal is very spongy or goes to the floor the master cylinder is bad. If you have a good firm pedal then the master cylinder is fine. Read more »