Technical Questions | SIC-Performance

How to Cure Carburetor Stumble

Cure The Bog And Sluggish Response On Your Holley Four-Barrel Carburetor By Properly Adjusting The Accelerator Pump Assembly

If your car or truck is equipped with a Holley four barrel carburetor and stumbles upon acceleration, more than likely the carburetor needs an adjustment to the accelerator pump assembly. This assembly delivers an initial shot of fuel in the right amount, and duration, to provide crisp throttle response right off idle. Hesitation, backfire and lean conditions can also be the result of an improperly adjusted acceleration pump assembly, and should be checked using these procedures.

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How much is an engine installation?

A basic engine removal and installation job requires at least 25 hours of labor, and usually a little more like 30. Of course anytime there is custom work, fabrication, problems with rusty or old parts, exhaust modifications, tranny and/or rear-end work, a bunch of old parts that need to be cleaned & painted, dozens of bolts that need to get cleaned, etc, it adds to that time accordingly. It’s really hard figure an accurate price for that kind of stuff ahead of time, so sometimes on top of a “basic” installation price, you might run into some extra “time and materials” to deal with things that you might not even have known you needed.

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RetroSound Introduces iPod/iPhone Compatible Radio for Classic Cars

retrosound model two

RetroSound has announced the release of its new Model Two radio, which is specifically designed for use in classic cars and is compatible with iPods and iPhones. The Model Two radio features built-in Bluetooth hands-free technology and comes with an external microphone. It also features wireless Bluetooth audio streaming from any iPhone or Android phone. Any phone app, including satellite radio, Pandora and Slacker Radio, can be streamed to the Model Two wirelessly, said the company.

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Transmission Conversation – Modifying a World Class 5-Speed Manual Transmission for Use in a Street Rod.

he 5-speed Borg-Warner/Tremec T-5 is one popular gearbox. Thousands have been stuffed into everything from lowly Chevettes to Nissan 280ZX Turbos, but they’re most commonly found in Mustangs, F-body Camaros and Firebirds, and Chevy S-10 pickups. Muscle car fans can probably use one of the tougher versions as-is, but if you decide to slide one of these lightweight (75 pounds) and reasonably-priced boxes into a street rod or vintage pickup, you may be up against packaging problems.

There are over 250 versions of the T-5, with a seemingly endless variety of gear ratios, shifter locations, speedometer fittings and strength requirements. Unfortunately, we only have room to show you one of the most common T-5 conversions for street rods. It all comes down to a matter of class – World Class, to be exact.

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Mini-tub Your Muscle Car

Should I restore it totally stock or build it for performance? How about if I modify the drive train but leave the body stock? What changes can be undone if I want to make it stock again? What modifications will help or hurt the value of my car? How much will the performance be limited by staying stock?

Without a doubt, there can be a lot of options to be considered before a restoration project gets under way but they are really not difficult decisions once you know what you want your dream to look like. Our experienced team of professionals will keep you out of trouble.

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Introduction to How Car Suspensions Work

When people think of automobile performance, they normally think of horsepower, torque and zero-to-60 acceleration. But all of the power generated by a piston engine is useless if the driver can’t control the car. That’s why automobile engineers turned their attention to the suspension system almost as soon as they had mastered the four-stroke internal combustion engine.

The job of a car suspension is to maximize the friction between the tires and the road surface, to provide steering stability with good handling and to ensure the comfort of the passengers. In this article, we’ll explore how car suspensions work, how they’ve evolved over the years and where the design of suspensions is headed in the future.

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How to Choose the Right Rear End Gears

To choose the right rear end gears, consider how you want your vehicle to perform.A vehicle’s rear end gear ratio can have a major effect on how the automobile runs. Changing the rear end gears in your vehicle can be one of the most cost-effective ways to modify its performance. There are many things to consider when choosing a rear end gear ratio, however. Changes in the rear end gears can affect your vehicle’s top speed, acceleration and fuel economy fuel economy. Consider how you want your vehicle to run when changing the gear ratio, and it will be easy to choose the right rear end gears.

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MOPAR Cylinder Head Design

While the block is the foundation of the engine, the cylinder head is the most popular aspect of the engine that is discussed by racers, writers, customers and fans. To change the cylinder heads can be somewhat expensive and requires the engine to be partially disassembled, so this may not be the most popular change—in terms of shear volume—but everyone talks about them. Of the 20-plus main aspects of cylinder heads, most enthusiasts typically only want to talk about one—air flow! They have very little interest in the exhaust side or the actual flow curve and they only want to discuss peak-flow numbers on the intake side of the head.

Up until a few years ago, there were very few choices in actual cylinder heads or castings. The production

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How To Tune Fuel Pressure For Nitrous – Quick Tech

If you care about how nitrous and gasoline combine to make excellent power, this story is for you. This is not revolutionary information-but it is one of the best ways to keep your nitrous engine healthy and powerful.
All nitrous systems are designed to use a combination of fuel and nitrous jets that are based on specific nitrous and fuel pressures. This is because reducing either fuel or nitrous pressure also lowers total flow. The opposite is also true: The same jet size will flow more fuel (or nitrous) at a higher pressure. This is why fuel pressure is so critical.

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Old school Hemi character & breathing coupled with LS technology. Ooh, baby!

For GM LS owners looking for the final word in cylinder head performance, Nick Arias Jr. Racing Components presents its new LS-AH Chevy Hemi® cylinder head. Poured from 356 T-6 alloy and featuring full water jacketing, the LS-AH Chevy Hemi will bolt on to any GM LS factory or aftermarket block.

High efficiency ports, along with 2.260-inch intake/1.600-inch stainless steel valves yield more than 400 cfm for the intake and over 300 cfm for the exhaust at 28 inches of water. Choose from either a true hemispherical chamber or Pro Stock-inspired Figure 8 chamber with quench pads–both designs feature a central plug location for maximum combustion efficiency. Heads are available assembled as part of a complete kit, which includes shaft rockers and tool steel springs, cast aluminum valve covers, head gaskets, fasteners and header flanges ($9,036) or assembled heads only ($4,460). Options include CNC porting, black wrinkle or polished valve covers, carburetor or intercooled supercharger intake manifold, and more.

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