Welcome to Music City Rod Shop, your source for automotive performance and racing tech info and installation instructions. From increasing performance in street or race cars to handy automotive formulas and installation instructions, we have collected information from manufacturers including MSD Ignition, Taylor/Vertex, Mr.Gasket, Moroso Performance, Competition Engineering, Holley Performance, Comp Cams, Design Engineering, Manley Performance, Hooker Headers, Earls Performance, Wiseco Piston, Hilborn Fuel Injection, and many more.

Holley Carburetor Float Adjustment

GENERAL GUIDELINES FOR ADJUSTING BRASS AND NITROPHYL FLOATS Two methods of float adjustment are provided for with Holley performance carburetors depending on the style of float bowl and needle and seat assembly employed. They are the internal (dry) setting and the external (wet) setting. The internal float adjustment is accomplished with the fuel bowl off the carburetor. With “internally adjustable” needle and seats, the fuel bowl is inverted and the float tang, or tab, is adjusted... (more)

Last Edited Nov 8th, 2007 09:30 am

ZEX™ Wet Nozzle Technology

Most nozzle designs are all alike. Other manufacturers may change a hole location here or a tip angle there, but in reality, there really hasn't been a breakthrough in nozzle technology in the past 20 years... until now. The most important function of a nozzle is to properly mix and atomize the correct amounts of nitrous and fuel. Current designs spray a solid stream of fuel at the nitrous stream and hope that it will atomize properly. Other designs are forced to be run excessively... (more)

Last Edited Nov 5th, 2007 11:24 pm

Best Way To Choose A Header For Aftermarket Heads

Before choosing an aftermarket head, begin by finding a set of hedders that is designed to fit the chassis with the heads you plan on using. Most aftermarket heads have different exhaust port locations, different plug angles and some even have different bolt patterns.For this reason,and to ensure that you choose the best performing hedder for your specific application, it is highly recommended that you consult with the Husler Technical department before committing to a specific hedder... (more)

Last Edited Nov 3rd, 2007 10:04 am

Determining Piston Compression Height

With this formula, you can determine the compression height of your pistons. a = Block Length (centerline of crankshaft to deck surface) b = Stroke of Engine c = Rod Length d = Deck Clearance Formula: a - (b / 2 + c) - d Example: 9.025 - (3.50 / 2 + 6.00) - .025 = 1.250... (more)

Last Edited Nov 22nd, 2007 08:26 am

Zex Installation Instructions for Jeep Grand Cherokee SRT8 Nitrous System 82241

Installation instructions for the ZEX™ 82241 Jeep Grand Cherokee SRT8 Nitrous System including wiring diagrams, plumbing diagrams, bottle mounting tips and jet/hp chart.... (more)

Last Edited Nov 21st, 2007 02:15 pm

MSD Ignition General Installation Tips

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Last Edited Nov 8th, 2007 08:13 pm

ZEX 82028 Diesel Nitrous Kit Installation Instructions

Installation instructions for the ZEX™ 82028 Diesel Nitrous System including wiring diagrams, plumbing diagrams, bottle mounting tips and jet/hp chart.... (more)

Last Edited Nov 13th, 2007 08:15 pm

Installing MSD Soft Touch Rev Controls

The MSD Soft Touch Rev Control, PN 8728, is designed for inductive style ignition systems. It cannot be used with an MSD CD Ignition such as any 6 or 7 Series Ignition Control. The Rev Limit is set with plug-in rpm modules. When the rpm reaches the specified limit, the Control will randomly drop the spark to the cylinders to keep the rpm at the limit. If no module is installed, there will be no rev limit.... (more)

Last Edited Nov 8th, 2007 11:34 pm