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The Tremec TKO is a great choice for retrofitting into the old muscle cars, but it isn't quite a direct bolt-in replacement for a four speed. There are a few areas that will require modification and/or custom parts for a TKO conversion into any muscle car.

The Tremec TKO's three rail internal shift mechanism is positioned at the top of the transmission, making it taller, wider and flatter across the top than most of the old four speeds that were common in the 1960s and 1970s. Some cars such as the 1967-1981 Camaros and Firebirds typically have ample room to install a TKO without any tunnel modifications. Other muscle cars have transmission tunnels that are barely big enough for the old four speeds, and will interfere with the TKO. Body mounts that are in bad condition will make things worse, so make sure your body mounts are in good shape before installing a TKO. Some cars can get by with just dimpling the transmission tunnel in a few areas, but on others there just isn't any way to get around cutting the tunnel and reshaping new sheetmetal around the transmission. However, the modifications can almost always be covered by the factory carpet, and with a console may be completely invisible from inside the car.

Your transmission crossmember or its location will have to be modified in some way due to the mount pad location on the TKO being further rearward than the mount pad on most four speeds. On some cars you can just move the crossmember further back on the frame rails and drill new holes, but others may require sectioning your factory crossmember and welding it back together, or possibly fabricating a new one. Before removing your old transmission, it is wise to record the height of the transmission output shaft relative to some fixed point on the car so that you have a reference point to shoot for when modifying your crossmember or building a new one. The transmission height may need to be raised or lowered slightly in the end in order to obtain acceptable driveline angles, so keep that in mind if you are fabricating a new crossmember.

The TKO at 24.07" long is not exactly the same length as any factory four speed, although it is very close to some versions of the Ford Toploader. Plan on either having your old driveshaft modified or having a new one built to work with the TKO. The TKO requires a Ford C6 pattern 31-spline slip yoke, but there are slip yokes available that will adapt the TKO to common 1310, 1330 or 1350 universal joints. You may want to keep your original driveshaft intact in case you ever decide to sell your car and want to convert it back to the original configuration.

Most four speed transmissions use a solid bronze pilot bushing in the crankshaft, but a roller pilot bearing is a good idea with almost any transmission. The TKO requires one. Make sure you install a roller pilot bearing along with the TKO.

The Tremec TKO has tapered roller bearings supporting the input shaft, and is designed with relatively tight tolerances. It doesn't have the "slop" in the input shaft that the old 4-speed transmissions have. Tremec requires that you perform a bellhousing runout check to make sure that the transmission is properly aligned with the crankshaft. If you have more than 0.005" of misalignment, you will need to install offset dowel pins to correct it.

Some cars have other challenges to overcome, such as the torsion bar front suspension on Mopar muscle cars. The support structure that the rear ends of the torsion bars attach to interferes with the TKO. A Mopar installation will either require a specially modified transmission, a serious amount of fabrication and reinforcing after removing the torsion bar support structure, or a new front suspension that eliminates the torsion bars altogether.

The areas of concern above are common to almost all TKO installations. Even considering these obstacles, the benefits of increased fuel mileage and decreased noise, heat and engine wear are worth the effort if you plan on driving your muscle car any further than just across town very often!

Keisler Engineering has overcome many of the hurdles above by modifying the transmission case and shift position to fit better in the old musclecars, and they also provide complete transmission kits that include crossmembers, driveshafts, and other conversion parts that are custom-designed specifically to mate the TKO to your car. Give them a call at (865) 609-8187 for more information on what is needed to install a TKO in your model of muscle car or street rod.

If you own and drive a musclecar or street rod, you may be paying way too much for insurance that will let you down if you have an accident! A specialty classic car insurance policy can give you much better coverage for considerably less money than standard auto insurance. Take a look at Classic Car Insurance Companies for a run-down of the most popular specialty insurance providers. For an in-depth look at the details of what to look for in a classic car insurance policy, go to Classic Car Insurance Quotes.

Keith Farren is an ASE Certified Master Technician with a BS in Business Administration, an Associate degree in Automotive Technology, and over twenty years experience in the automotive industry. He currently works for Keisler Engineering.

Jeep Soft Tops, Factory Vs Aftermarket

When you purchased your Jeep you got it with a regular top, perhaps a hardtop. because you got it with this Factory Top doesn't mean this is the only Jeep Top you can sport. There is several premier companies that have the expertise to provide you with a Jeep Top that will have Factory Specs, Durability and the Distinction of the Jeep Look.

These companies have been around for decades and that speaks volumes of there commitment to the Jeep quality.

Two of the Choice companies for your Jeep Top is Bestop. There is the foremost Jeep Top company with superior selection. Bestop begun as a automobile upholstery business and grew in to what is thought about the number two Jeep Top company. Because they work hand in hand with Jeep they understand the demands, they apply Jeep specs and strive to improve on a regular basis.

 Along with Bestop you have Rugged Ridge, Pavement Ends and Mopar. Rugged Ridge is a company that has been in operation since 1992. This company begun as a Jeep dealership and branched out with two of the relatives members in to Rugged Ridge. They understand the demands and designs of the Jeep brand. They offer a giant variety of Jeep Tops that stand the check of time.

Pavement Ends is a young company that has come up the ranks because of their diligence and industry smarts. They provide a high quality product to Jeep owners that fit well and is price right.

Mopar has been around since the late 30's and the name is composed of two words Motor and Parts, hence Mopar. The name came about a think tank created by Nelson L. Farley, Chrysler's Sales Promotion Manager in the 30's who is purpose was to brainstorm ideas and products.

Through the years this company has been involved in lots of facets of the automotive industry and has been a top Jeep-Chrysler leader, always innovative and forward looking.

When purchasing a Jeep Top these are the only companies you ought to be thinking about. These companies are now the top guns for your Jeep tops and the only way to go. They have been part of the industry for years, they understand the demands and design the tops with Jeep specs. Your Jeep Top has to provide you functionality, durability and that distinct Jeep Top look, and these companies deliver on all fronts.

Aftermarket Jeep Top Choices

Standard Jeep Soft Top

The standard Jeep Soft Top now has a color facelift. Were as before the color option were limited to Black and Tan, now you have several colors to pick from. The colors now includes light and dark tan, gray or light blue gray and you can also get your soft top with tinted windows. Along with more color choices you can receive a Jeep Soft Top, Flip Top. The Jeep Soft Top, Flip Top is the Jeep version of a sun roof. You can keep your Soft Top on and with a "Flip" you have the best of both worlds. The protection from the elements and the feel of the outside.

 Bikini Tops

 The Jeep Bikini Top is a design of Bestop, along with there Windjammer/Duster Combos.

Two times the Summer rolls around the Bikini top is the only choice, this is the time when you enjoy your Jeep to the fullest. The Bikini top is the an aftermarket Jeep Soft Top that captures the essence of the Jeep lifestyle. Maximum Coverage and Maximum Expose is what the Bikini Top is about, the envy of everyone as you ride along the beach side or through the back country.

For a different look and to protect your passengers you can go with the Safari Top. The Jeep Safari Top is nothing over a extended Bikini Top. The Safari Top allows your passengers to enjoy the outside with some degree of protection while still taking then on the ride of their life.

Finally, if you require to protect your Jeep and minimize the wind effect you require the Windjammer/Duster Combo by Bestop. The Bikini Windjammer/Duster Combo gives your Jeep a different look and feel. The Windjammer cuts down the wind effect and quiets the ride a bit. While the Duster reduces the dirt, dust and debris that accumulate in the rear of Jeep. The best part is that along with all the benefits the Bestop Combo gives your Jeep a new look!

In the same section you have the Sun Caps, Sunlighter and Summer Briefs. These are fundamentally Bikini Tops by another name. The two exception is the Sunlighter, which is the same design as the Bikini Top but with a different fabric or material. The material for the Jeep Bikini Top Sunlighter is a semi-transparent fabric that allows more sunlight and warmth to come through. Although this top does permit more expose it still provides some level of UV protection and it is water resistant.

 As you can see Factory VS Aftermarket, Aftermarket Wins! With companies like Bestop, Rugged Ridge, Pavement Ends and Mopar you have an array of choices. These trusted companies with have a history of quality, reliability and affordability, they can provide you with everything you require when it comes to Jeep Soft Tops. Your Jeep Soft Top is no longer functionality it is a Fashion Statement, a Seasonal Accessories and a Character Trait

About the Author

Lourdes Amil is a Marketing Specialist for Morris 4x4 Center and Jeep Enthusiast. Morris 4x4 Center is the Foremost Online Retailer of Jeep Parts and Accessories.

How much horsepower could I get with the Edelbrock Performer RPM Power Package for my 318 Mopar?

I just bought my first muscle car, 1971 Dart Swinger. 318 2bbl. I am thinking of all the parts of the power package for the small block Chryslers. The entire ackage is outlined on Edelbrock.com. Cam and lifters, carb, heads, intake and timing chain kit. I know the cost of the parts, but I dont know what the horsepower might be put up to, and that is the important number. These are my stats from factory; 230hp @ 4400rpm 320ft.lb @ 2000rpm. Thank-you in advance for your help. I will leave more information if needed.

My experience with edelbrock cams shows that if you use them you can wind up with less horsepower than stock.The edelbrock performer rpm airgap intake is excellent.The edelbrock heads other than being aluminum are more of a stock replacement head than a high performance head.A good set of 2.02 318 swirlports will out perform them.A holly carb is much better for making power with than the edelbrock carb.A crane cam or an erson cam is also better than the edelbrock ones from what I have experienced.Do a little research and maybe get yourself a desk top dyno so you can run a couple different combos to see what they net you in hp and torque.

Jeep® and Mopar® Are First in Industry to Offer Off-road Camper Trailers
Jeep® and Mopar® are helping to set up camp for off-road enthusiasts. They will be the first in the industry to offer customers off-road camper trailers.

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