Install Prep Case Study: Automotive Two Post Lifts in an Overland Build Shop

The best install day we had all last fall took four hours, and it took four hours because the site survey happened six weeks earlier. The customer builds overland rigs — lifted Tacomas, a couple of 4Runners, one very ambitious Land Cruiser — and splits his time between a shop just over the line in southern Minnesota and a second bay in northern Iowa. He wanted automotive two post lifts in the Iowa building so he could stop crawling under vehicles for oil changes, differential service, and transfer case fluid. What follows is how that project actually went, step by step, including the two things we found during the survey that would have wrecked the install if nobody had looked.

The Ask: Fluid Service on Tall, Modified Trucks

Overland builds break normal assumptions. The vehicles are taller than stock, often three inches or more, they wear 33s or 35s, and the rocker panels frequently have aftermarket sliders bolted where a pinch weld pad wants to sit. Our customer also had skid plates on nearly everything, which changes how you approach an oil change and drain plug access. He was not doing brake jobs and suspension teardowns all day; he was doing engine oil, front and rear differential fluid, transfer case fluid, and the occasional transmission service.

That workflow pushed us toward a frame-engaging design rather than a drive-on, because getting the wheels off the ground occasionally still mattered and because he wanted true walk-under clearance while draining fluids. Height was the interesting constraint. On a truck with a lift kit and 35s, the roof is already close to seven feet. Raise it to comfortable working height and you need real ceiling. We spent as much of the initial call on his truss height as we did on capacity. This is common with automotive two post lifts in shops that work on modified vehicles, and it is the reason we do not quote from a phone description alone.

The Site Survey: What We Measured

We showed up with a tape, a rotary hammer, a level, and a flashlight. Six numbers matter: lowest overhead obstruction, sidewall height, overhead door opening height, bay width wall to wall, distance from the intended column location to the nearest wall or bench, and slab thickness. We also sighted the floor for slope, because shops with a drain in the middle of the bay often have a quarter-inch-per-foot pitch that will not let columns sit plumb without shimming.

His building measured 14 feet to the bottom of the truss chord, which was generous, but the overhead door opening was only 12 feet and there was a run of conduit and two fluorescent fixtures right where the overhead beam wanted to live. That is a normal finding. It means either the light fixtures move or you go with a different configuration. We also found the slab measured a genuine five and a half inches of hard concrete when we drilled the test hole, which is better than most and meant no footing work. Then we found the second issue: a floor drain line running diagonally about eighteen inches under the surface, exactly under the driver-side column position. Rotating the whole layout ninety degrees solved it. That is what a survey buys you when planning automotive two post lifts.

Choosing the Configuration: Overhead vs. Baseplate

With 14 feet of clear truss and a willingness to relocate two light fixtures, we went overhead-beam clearfloor. For a shop that builds vehicles, an unobstructed floor is worth real money. He rolls engine hoists, jack stands, and a parts cart through that bay constantly, and a baseplate crossmember becomes a tripping hazard and a place for dirt and spilled gear oil to collect.

We do specify baseplate units regularly, and there is no shame in them. A caller from North Dakota with a 139-inch ceiling had no other option, and baseplate was absolutely the right call for him. The tradeoff is simple: overhead configurations need roughly twelve to thirteen feet of clear height for a 10,000 or 12,000 lb unit and give you a clean floor; baseplate designs live happily under ten and a half feet and put hardware in your walking path. We also talked through asymmetric versus symmetric column rotation. Because his fleet is trucks and SUVs rather than a mix of sedans, symmetric arms with equal reach made more sense than asymmetric, which is really designed to let you open car doors between the columns. Getting that decision right early is why matching automotive two post lifts to a shop’s actual vehicle mix beats buying whatever is on sale.

Prep Work He Did Before Our Truck Arrived

We sent a prep list. He cleared the bay completely — not mostly, completely — which sounds obvious and almost never happens. He had an electrician run a dedicated 220V single-phase circuit with a disconnect within sight of the power unit column, because a power unit sharing a circuit with a compressor is a nuisance-trip waiting to happen. He relocated the two light fixtures and rerouted the conduit. He had a forklift on site with 6,000 lb capacity for unloading, which turned a two-hour freight fight into a fifteen-minute job.

He also swept and pressure-washed the slab. That matters more than people think, because anchor holes need to be blown clean for the wedge anchors to reach rated pull-out values, and a dusty floor hides cracks. We found one hairline crack about three feet from a column position, evaluated it, and determined it was a shrinkage crack rather than structural, so we proceeded. Finally, he had a plan for his oil drain and fluid evacuation setup, because once a truck is at working height you want your drain pan on a rolling stand rather than balanced on a creeper. Prep like that is the difference between an install day and an install week. We wrote more about it in our piece on what to expect on lift installation day.

Install Day: How Four Hours Actually Broke Down

Roughly forty-five minutes to unload, unbox, and lay out components. About an hour to set both columns, square them, drill anchor holes, and torque the anchors to spec. Squaring is the step you cannot rush; if the columns are out of square, the carriages bind and the equalization cables wear unevenly forever. We chalk lines, measure diagonals, and then measure them again.

Another hour went to the overhead beam, hydraulic lines, equalization cables, and the shutoff bar. Then the power unit, wiring, fluid fill, and bleeding. The last stretch is the part that separates a professional install from a driveway job: cycling the unit unloaded a half-dozen times, verifying both locks engage audibly at every position, checking that the carriages rise level within tolerance, adjusting cable tension, then loading it with a real vehicle and cycling again. We finished with a walkthrough — daily checks, monthly checks, what a fraying cable looks like, where the lock release is, and why you never leave a vehicle up on hydraulic pressure alone instead of on the mechanical locks. Every install of automotive two post lifts we do ends with that conversation, and it takes twenty minutes.

What Changed in His Workflow

Oil changes went from a creeper job with a drain pan under his chin to a stand-up job. He reported that a full fluid service on a built Tacoma — engine oil, both diffs, transfer case, filter — dropped from most of an afternoon to a little over an hour. The bigger win was diagnostic: he started catching things he had not been seeing, like a weeping rear main and a slider mount that had loosened, because he was finally looking at the underside of these trucks under good light at eye level.

He also changed how he sets pads. With sliders in the way on several rigs, he uses truck adapters and tall screw pads on the factory frame lift points rather than fighting the rockers. We stock those adapters, and they are cheap insurance against denting a customer’s expensive armor. If you build or modify vehicles and you are shopping automotive two post lifts, budget for pad extensions and truck adapters from the start rather than discovering the need on your first job. Our overview of lifting points and truck adapters covers which combinations we see most often on lifted vehicles.

Applying This Case Study to Your Own Shop

The lesson from this project is not brand-specific and it is not capacity-specific. It is that every problem we solved on install day was found six weeks earlier with a tape measure and a rotary hammer. A drain line under a column, a light fixture in the beam path, a slab that turns out to be three inches instead of five — all of those are cheap to solve during planning and expensive to solve with a crew standing in the bay.

So before you order, do this: measure the lowest obstruction rather than the peak, drill a test hole and record actual slab thickness, find your buried utilities and heat lines, confirm you have or can add a dedicated 220V circuit, and arrange unloading. Then list every vehicle you expect to service, including the tall one and the heavy one. Bring us those numbers and we will tell you honestly which of the automotive two post lifts in our lineup fit and which do not — including when the answer is a four-post or a mid-rise instead. Call 800-674-9302 or email us and we will start with the survey, not the invoice.