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Front Suspension Upgrades - Suspended AnimationSalt's Frontend gets a new lease on life with help from Afco, Umi Performance, and Vengeance Racing. From the January, 2012 issue of GM High-Tech Performance By Justin Cesler Photography by The Author
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It’s funny how a simple idea can begin to spiral out of control the longer you spend thinking about it. Little things, like jumping off a cliff into water, riding in the back of a pickup truck at 16 years old trying to smash mailboxes with a baseball bat, or jumping out of a perfectly good plane, the reality of what could go wrong doesn’t really hit you until much later, when you finally have time to process the events and think about what could have happened had something gone terribly wrong. During the buildup of SALT, our standing-mile project car, this “over thinking” problem has almost been happening in reverse, as each modification and install brings us closer to the final goal of running down a runway at top speed, trying like hell to get up to and over the 200-mph barrier. The closer we get, the more vivid the day dreams become. And truly, if there is one thing more terrifying than going two hundred miles an hour, it’s the thought of something going wrong at those speeds. Engine failure, fire, tire spin; those are all somewhat probable at this level and something we are going to have to plan for no matter how stout the engine program or wheel and tire combination is. Stuff happens and we’re ready to deal with it as we approach speeds usually reserved for airplanes and missiles. That said, there are some things that could happen at speed that you can’t recover from, like a tire blowout (see LMR’s amazing video on here: http://bit.ly/oD3jls), a driveline issue or, most catastrophically, a suspension related failure. Could you imagine what could happen to a Trans Am travelling 200-plus miles an hour if a lower control arm broke or a shock failed? We have and the results were not pretty, which is why this month’s focus is all about safety and speed, combined to take our 2000 WS6 from a street worthy driver to a vehicle ready for takeoff. Back with the crew at Vengeance Racing, we ordered a plethora of parts from UMI Suspension and AFCO Racing, relying on each vendor’s years of experience with high performance cars to spec us parts that would work well under the extreme pressure of speed and traction when we finally get on track. As you will see both manufacturers stepped up to the plate and hit a home run, equipping us with the latest and greatest in handling and performance out on the track. Without the turbo kit, SALT even started to look more like a G-Machine than a straight-line missile and that’s going to be good news when we start doing future testing. For now, stand by and watch Charlie Hill of Vengeance Racing take our stock, rusty WS6 and turn it into a high-tech top speed terror.  1 GM did a solid job with...  1 GM did a solid job with the front-end suspension components on the fourth-gen F-body, but ten years of abuse combined with over ten years of suspension advances in the aftermarket made for a solid case against ditching the stock parts and going high-tech for our 200-mph standing mile attempts.  2 Comparing the stout UMI...  2 Comparing the stout UMI Performance “road race” style K-member to the heavy, bulky and hideous factory piece, the advantages should be immediately obvious. Not only is the UMI K-member lighter (22 pounds), but it also offers increased adjustability over the factory unit, ships with integrated motor mounts and frees up quite a bit of room in the cramped factory engine bay.  3 Taking a closer look at...  3 Taking a closer look at the “road race” K-member reveals additional cross bracing, which is built from 1.250- by 0.120-inch DOM steel tubing. This additional bracing strengthens the entire K-member and has been proven by UMI to withstand extreme lateral loads without failure.  4 Along with the K-member,...  4 Along with the K-member, we also ordered a pair of upper and lower control arms from UMI, which are built from the same DOM steel as the K-member and feature greasable and fluted CNC-machined Delrin bushings along with an adjustable and rebuildable Roto-Joint on the lower control arm.  5 Designed by UMI to “work...  5 Designed by UMI to “work like a spherical rod end while maintaining the streetable qualities of a softer bushing,” the Roto-Joint (short for rotational joint) allows for up to 28 degrees of total rotation and features a Delrin inner race to absorb shock and reduce deflection. Best of all, the Roto-Joint is 100-percent rebuildable, which is great for service at the track or out in the middle of a runway.  6 The front of the lower...  6 The front of the lower control arm (along with both sides of the upper control arm) features CNC-machined Delrin bushings, which are designed to eliminate friction for faster travel and minimal deflection under even the most extreme loads.  7 Trick features aside, installing...  7 Trick features aside, installing the lower control arm into the UMI K-member is a simple and straightforward task although the adjustability of the arm can play tricks with the installer. With the Roto-Joint adjustment nut loose, Charlie Hill of Vengeance Racing slid the front Delrin bushing in place and then adjusted the rear Roto-Joint to line it up with the K-member slots.  8 Sometimes it’s the little...  8 Sometimes it’s the little things that can make a big difference on a build like this and Charlie wasn’t about to install the rusty factory spindles onto our new UMI parts without giving them a thorough cleaning and blasting with some classic wrinkle black paint for a nice look. The spindle simply slides over the new UMI ball joints and gets tightened down with the supplied nut.  9a Replacing the upper control...  9a Replacing the upper control arm is also a fairly straightforward process and just two bolts hold it to the factory upper strut mount...  9b ...UMI can also supply...  9b ...UMI can also supply new upper ball joints or you can purchase them from a local parts store if you choose. You can’t reuse the factory ball joints, so make sure you plan ahead here.  10 Speaking of factory strut...  10 Speaking of factory strut mounts, it’s probably a good time to talk about these parts, which may look a bit out of place for this install if you haven’t skipped ahead and peeped at our killer coilover selection. What you’re looking at here is actually AFCO Racing’s F-body coilover upper mount kit, an assembly that must be welded to the stock upper strut mount before installing the new shocks.  11a From above and below,...  11a From above and below, Charlie Hill shows us how the upper mounting assembly bolts in place...  17 Almost ready to install...  17 Almost ready to install the K-member, upper and lower control arms and shocks into the WS6’s engine bay, but not before installing a set of UMI Performance’s new aluminum motor mounts onto our mock-up (and very pink) engine block. These mounts are super lightweight, easy to install and keep the engine in the factory location, making them perfect for anyone looking to run a solid mount on a fourth-gen.  18 Now we’re getting somewhere!...  18 Now we’re getting somewhere! It took Charlie and the Vengeance crew almost no time at all to get the K-member and suspension pieces in place and it should be just as easy if you’re doing this at home. Just remember to take your time and line everything up before tightening the main K-member-to-framerail bolts down.  19 With the K-member done,...  19 With the K-member done, it was time to bolt the AFCO Pro Touring Elite coilovers in place. Down below, AFCO included these F-body specific bearing style tie bars, which allow them to be bolted to factory or factory-style lower control arms. The aluminum mounting bracket is from UMI and it helps distribute the load over the mount to reduce fatigue.  20 Up top, the upper coilover...  20 Up top, the upper coilover mount assembles like so and is then slid into the mounting plates that Charlie assembled earlier. Also notice the line for the remote-mount canister in place here. You can’t remove this without having to send back the entire shock assembly, so make sure you take care of it during the install.  21 Stepping backwards, all...  21 Stepping backwards, all of the hard work is revealed. The mock-up engine block is in place, the lightweight but tough UMI suspension components are snugged down and the AFCO Pro Touring Elite coilovers are ready to rock. Well, almost ready to rock…  22 ...We still have to find...  22 ...We still have to find a good place for the remote mount canisters that will allow us easy access to the dampening adjustment while keeping the canister out of harms way. We’ll figure this out and more once we get the rest of the drivetrain and engine in place, which you will have to wait until next time to see!  1b1 ...It is possible to...  1b1 ...It is possible to leave the assembly bolted for the install, but Vengeance Racing chose to weld the mounting system in place, insurance we will certainly appreciate at speed heading down the runway.  12 With the welding complete,...  12 With the welding complete, Charlie installed the AFCO shock mount onto the welded mounting plates and coated the entire upper mount in black paint. This upper mounting solution allows the AFCO shock to bolt in place, have easy movement through the range of travel and remain in place under heavy loads without deflecting.  13 And here you can see the...  13 And here you can see the reason for all of this work, AFCO Racing’s Pro Touring Elite series monotube double adjustable coilovers. Featuring remote mounted canisters for easy dampening adjustment and available in 4-, 5- and 7-inch stroke, these Pro Touring Elite coilovers will help keep SALT planted to the asphalt and hooked up under power.  14 Assembly of the AFCO coilover...  14 Assembly of the AFCO coilover shocks is fairly simple and Charlie started by threading the lower spring mount onto the shock body. You can see that AFCO added a nice lock-down screw, which means that once ride height is set, it isn’t going anywhere.  15 Next, Charlie slid the...  15 Next, Charlie slid the AFCO spring in place and lowered the spring mount to an appropriate height. There is no way to really set ride height with the coilovers off of the car, so just get it close and tweak it once the car is at full weight and ready for the track.  16 Last but not least, Charlie...  16 Last but not least, Charlie installed the upper spring mount and made sure everything was snug and in the correct place. We chose to start with a pair of 400-lb front springs on SALT, which is pretty firm, but that’s just what we’re looking for.
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1999 Pontiac Firebird Trans Am - Street Heat
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