1983 Chevy Camaro Z28 - Every 140,000 Miles or So, It's Time For a Tune-Up

We Call It Extended Maintenance

Joe Rode Oct 25, 2006 0 Comment(s)
Sucs_0665_tune_01_z 1983_chevy_camaro Front_view 2/16

After a few hours working on my project '83 Camaro, I began to realize that I mostly forgot about the less than enjoyable things that come along with fixing up an old car. One of the things on this "not-so-fun" list is the fact that just about every inch of our 140,000-mile beauty needs some attention in one form or another. So logically, I get to start from the beginning, which in my case, it turns out, is really not such a bad thing after all. Having not owned a hot rod for 20 years, I'm finding that even the simple things like changing spark plugs and wires are helping to ease me back into the game and reacclimate me to all the little nuances of turning wrenches again.

Sucs_0665_tune_03_z 1983_chevy_camaro Tune_parts 3/16

Having no history on the Camaro and 140,000 miles, I set out to replace every tune part. And as much as I wanted to take shortcuts, I painstakingly followed the rule of only making one change at a time so I could track the progress specifically and know if I messed something up.

And while taking a day to give your ride a good performance tune-up is nothing like bolting on a blower or changing a camshaft, the first spin around the block with your newfound power is no less satisfying. Of course, with the kind of mileage on my car, every spin around the block can also conjure up more problems. With the Camaro, the initial brake action is very touchy, as I almost hit the steering wheel at the first stop sign, but they become tolerable once warmed up. Still, the brakes warrant some immediate attention. Without touching the throttle bodies, the car starts and idles very nicely.

But I won't be confident of their potential until they are overhauled. The radiator was quick to show its age by sporting several small leaks. Knowing I would be flogging the car plenty hard over the next few months, I stepped up and installed one of Be Cool's modular aluminum radiator kits with dual electric fans. I can check that one off the list of things to worry about. The big setback looks to be the 700R automatic transmission. When I am on the throttle hard, the trans begins to slip in the upper rpm ranges. I'll have to have an expert pull the pan for some diagnosis, but the outcome seems inevitable. Even with the stock exhaust (stock except for the addition of a Random Technologies converter), the Camaro's sound makes me smile, because I am beginning to sense the potential of the fun to come.

After completing the tune-up, we trekked to California Speedway in Fontana for some baseline braking and suspension testing. This is essential in order to document our future performance gains and improvements. The car stopped from 60 mph in a respectable 169 feet, although the rear brakes were quick to lock up. The Camaro also made its way through the slalom course with some noticeable lean and excessive rear-end slide (though we only "looped" it once) in a best 39 mph while pulling .78 g's on the skidpad.

Sucs_0665_tune_02_z 1983_chevy_camaro Rear_view 4/16

The performance was where we expected it to be given the car's age, the inevitable deterioration of all the suspension components (bushings, shocks, and struts), and the tires' condition. When we did our testing, the dragstrip was shut down for remodeling, so we didn't get to chart an e.t., but we'll have that most assuredly dismal number at some point. As should be the norm, safety and drivability will be the first things I attack with the Camaro, adding a fresh set of tires, refurbishing and upgrading the brakes, replacing all the worn bushings with something new and improved, and replacing the cushy shocks and struts with good performance models. And, of course, Camaro Performers will be there through it all, showing you how it all goes.

Sucs_0665_tune_04_z 1983_chevy_camaro High_flow_cat 5/16

The first stop for the Camaro was our resident muffler shop, The Muffler Man, to replace the stock catalytic converter with a high-flow model from Random Technologies. Upon start-up, it was obvious the original was not only full of leaks but plugged up, as this one change made more of a difference in the car's performance than any of the other tune-up parts. You can't see it from this angle, but it was necessary to weld a fitting in the exhaust tube in order to keep the air pump tube in its stock location and functional. You gotta love those California smog laws.

Sucs_0665_tune_07_z 1983_chevy_camaro Distributor_cap 6/16

The new MSD Extreme distributor cap must be reinstalled without the coil cover, as the new cover included with the MSD cap incorporates bosses that hold the plug wires in place.

Sucs_0665_tune_08_z 1983_chevy_camaro Dyna_module 7/16

After replacing the cap, I ran the car to make sure I had gotten it all back together correctly. The next part to go in was one of Performance Distributor's performance Dyna-Modules. The kit came with good instructions and two tubes of silicone grease used on the module mounting plate, where it conducts heat away from the module.

Sucs_0665_tune_05_z 1983_chevy_camaro Distributor 8/16

After screwing in a set of plugs, I dove into the HEI distributor armed with lots of good MSD and Performance Distributor parts. Make sure you mark your plug wires before you remove them.

Sucs_0665_tune_06_z 1983_chevy_camaro Distributor_cap_open 9/16

After changing to an MSD rotor, I set out to replace the distributor cap. Having never been inside an HEI distributor before, I found all kinds of interesting parts, including the integral coil. I can't think of a better company when it comes to instructions. MSD replacement parts can be used with the stock HEI, as well as their billet distributors. They give you easy to read documentation that tells you precisely what you have to do in either application.

Sucs_0665_tune_09_z 1983_chevy_camaro Spark_plug_wires 10/16

A good plug wire install requires you to take your time and route the wires as neatly as possible. I used a set of universal MSD 8.5mm Super Conductor wires. A functional set of wire separators is also a necessity. I used MSD's plastic snap-together models. They are simple, sturdy, and secure.

Sucs_0665_tune_10_z 1983_chevy_camaro Alternator_removal 11/16

The fuel filter was buried beneath the alternator. Since the fuel line fastened to the filter with a flared fitting and there was no clearance for a wrench, I had no choice but to remove the alternator so I could snake the filter and line out for replacement.

Sucs_0665_tune_11_z 1983_chevy_camaro Fuel_line 12/16

When I reinstalled it, I reshaped the line a bit, which made for a cleaner fit. I definitely don't want to go through that again, so I am putting an aftermarket remote filter on my wish list.

Sucs_0665_tune_15_z 1983_chevy_camaro Radiator_and_electric_fans 13/16

My first big upgrade was a Be Cool aluminum radiator with dual electric fans. The assembly was a bit pricey, but well worth it, as the car is now equipped to stay cool in any condition with as much horsepower as I can throw at it. The fans turn off and on with an automatic temperature switch.

Sucs_0665_tune_12_z 1983_chevy_camaro Air_filters 14/16

The final touch was the addition of a fresh pair of K&N filters. And, of course, K&N had the correct ones to fit inside the Crossfire air filter assembly.

Sucs_0665_tune_13_z 1983_chevy_camaro Tires 15/16

The Camaro is going to get a new set of Firestone Indy 500 tires. Since I am staying with the stock wheels for the time being, I chose these because they offer good performance characteristics without breaking the bank.

Sucs_0665_tune_14_z 1983_chevy_camaro Wheel 16/16

These wheel caps from Hawks Third Gen didn't do a thing for performance, but they made the wheels look complete.


MSD Ignition1490 Henry Brennan Drive, dept. cpEl Paso, TX 79936-6805(915) 857-5200www.msdignition.com

Performance Distributors2699 Barris Drive, dept. cpMemphis, TN 38132 (901) 396-5782www.performancedistributors.com

Hawks Third Gen Parts201 Noble Road, dept. cpEasley, SC 29640 (864) 855-2694www.hawksthirdgenparts.com

K&N EngineeringP.O. Box 1329, dept. cpRiverside, CA 92502(800) 858-3333 www.knfilters.com

Be Cool Inc.310 Woodside Ave., dept. cpEssexville, MI 48732 (800) 691-2667www.becool.com

Random Technology4430 Tuck Road, dept. cploganville, GA 30052(770) 554-4242www.randomtechnology.com

Bridgestone Firestone NorthAmerican Tire, LLC535 Marriott Drive, dept. cpNashville, TN 37214(800) 807-9555www.firestonetire.com


Engines Drivetrain
Just about every inch of our 140,000-mile '83 Camaro Z28 needs some attention in one form or another, so we start with a tune-u...
Joe Rode Oct 25, 2006


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