Overhead or Baseplate? A Waterloo Race Team’s Decision Tree for a 2 Post Car Lift

A dirt late model crew chief outside Waterloo called us in February with a budget, a tape measure, and a hard deadline: he wanted a 2 post car lift in the team shop before the season opener in April. His problem was the same one we hear from half the racers in northeast Iowa — the shop is a repurposed pole building with a low collar tie running right through where the lift needs to go. He’d already priced three brands online and gotten three different answers about whether he needed overhead or baseplate. So we did what we usually do: worked the decision tree from the top, one question at a time, and let the building and the budget pick the configuration instead of guessing.

Question One: What’s the Heaviest Thing You’ll Lift?

Everybody starts at price. We start at weight, because capacity drives everything downstream. His race car scaled around 2,300 pounds — nothing. But the crew chief also planned to service the hauler’s tow vehicle, a three-quarter ton diesel pickup pushing 8,000 pounds with a full fuel tank and a toolbox in the bed. That single answer eliminated every 9,000 lb unit he’d been looking at online. Not because 8,000 exceeds 9,000, but because you don’t buy capacity with an eight percent margin. Anything you actually lift regularly should sit comfortably under about 75 percent of rated capacity.

So we landed on 10,000 lb as the floor and talked about 12,000 as insurance. That’s a common conversation. A 12,000 lb unit costs meaningfully more, uses heavier columns, and often needs more concrete, so it isn’t automatically the right call. In his case, the heaviest vehicle wasn’t going to grow — the hauler stays on the ground, the race car is light, and the tow rig was the ceiling. We wrote down 10,000 and moved on. If you’re in a shop where a customer might roll in with a loaded one-ton dually, that math changes fast, and we’d push you up a tier without hesitation. Our guide to choosing lift capacity walks through the same arithmetic in more detail.

Question Two: Measure the Ceiling — Twice, in Two Places

This is where most online research falls apart. He told us fourteen feet. When he actually got a ladder out, the peak was a bit over fourteen, but the collar ties crossed at eleven feet four inches, and the light fixtures hung another six inches below that. A clear-floor overhead unit needs roughly twelve feet of unobstructed height for the crossbeam and the shutoff bar, and more if you want full rise on a tall vehicle. His usable height was under eleven feet.

We told him to measure at four points: the peak, the wall line, the underside of any truss or tie, and the bottom of the lowest light, sprinkler head, or door track. Then subtract for the overhead assembly and the safety bar. The number that matters is the smallest one directly above where the columns will sit. He could have relocated the lift eight feet toward the door where the ties were higher, but that put the columns in the traffic path for the trailer. That’s the real tradeoff nobody talks about — configuration is often decided by where the lift has to go, not where it could go. When ceiling height and column placement fight each other, baseplate usually wins.

Question Three: Overhead vs Baseplate on a 2 Post Car Lift

Here’s the honest comparison. An overhead unit runs the equalizer cables and the hydraulic hose through a beam across the top, leaving the floor between the columns completely clear. That’s why shops love them — you can roll a transmission jack, a creeper, or a floor jack straight through without a bump, and the drive-through is unobstructed. The cost is height: you need real clearance, and you get a bar over the vehicle’s roof.

A baseplate unit moves the cables and hose into a flat channel across the floor between the columns. Nothing overhead at all, so ceiling height stops being a constraint — you only need enough room for the car itself at working height. The tradeoff is a roughly two-inch-tall ramp on the floor you drive over and roll tools across. Some people find that irritating for a week and then never notice. Others, especially anyone who moves heavy rolling equipment constantly, hate it permanently. For a race shop where a jack cart lives in the bay, we flagged it as a real consideration. There’s one more difference worth knowing: baseplate columns handle the full load without a top crossmember tying them together, so the anchoring and the concrete carry more of the burden. That makes the floor spec less negotiable. For his building, with ties at eleven-four and no way to move the bay, baseplate was the answer, and it wasn’t close.

Question Four: Concrete, Because the Floor Decides

His shop floor was poured in two stages, which is extremely common in Iowa pole buildings. The original slab, where the lift was going, he believed to be six inches. Belief is not a measurement. We had him core it, and it came back at five and a quarter with good aggregate and no visible voids — plenty for a 10,000 lb baseplate unit, which typically wants four inches minimum of 3,000 PSI or better, sometimes more depending on the model’s anchor pattern.

What we also checked was rebar and control joints. An anchor placed within six inches of a slab edge or a saw-cut joint has nothing to grip laterally, and that’s how you get a cone of concrete pulling out of the floor under load. His planned centerline put two anchors right on a control joint. Shifting the whole lift fourteen inches solved it. That kind of adjustment costs nothing if you catch it before you drill and costs a weekend of jackhammering if you don’t. If a core comes back thin, the fix is a reinforced footing — sawcut, excavate, tie in rebar, pour, and wait 28 days. Racers hate the 28-day part in February, which is exactly why we tell people to core in January. See our concrete requirements article for depth, PSI, and edge-distance specifics by capacity.

Question Five: Does the Configuration Help or Hurt Wheel Bearing Work?

Wheel bearing service is the crew chief’s most frequent job — hubs on a dirt car get replaced constantly, and the tow rig’s front bearings see brutal miles. That’s a wheels-free operation, which is the entire reason he wanted two posts instead of a four-post. On a two-post the arms pick up the frame or pinch welds and the hubs hang completely free, so you can pull a rotor, press a bearing, and torque a spindle nut with the wheel spinning by hand.

Configuration barely affects the bearing job itself, but it affects the workflow around it. Baseplate means the hub puller cart and the press have to roll over the floor channel, which he decided he could live with. Overhead would have meant a clean floor but a shutoff bar he’d bump with the tow rig’s roof racks. What mattered more for bearing work was arm geometry: he wanted three-stage front arms so he could get a good bite on the short frame rails of the race car without stretching a two-stage arm to its limit. We also set him up with a set of tall stackable pad adapters, because reaching a lifting point on a car with a low nose and a big splitter is a real problem. That’s the kind of detail that turns a 2 post car lift from adequate into genuinely pleasant to work on. Spend the extra on adapters. It’s the cheapest usability upgrade on the machine.

Question Six: Where the Budget Actually Goes

He came in expecting the number he’d seen advertised online to be the number. It never is. On a 10,000 lb baseplate unit, plan on the lift, freight to a commercial address or a terminal, unloading, anchors, install labor, and a 220V single-phase circuit run by an electrician if you don’t already have one within reach. The electrical surprise gets people more than anything else — a lot of pole buildings have a 100 amp panel with no spare double-pole slot, and the panel upgrade can rival the install cost.

He had a skid loader with forks, which saved the unloading charge entirely. He ran his own conduit and had a licensed electrician terminate it, which cut that line item roughly in half. He skipped the optional air line kit and the drip trays, which is fine — both can be added later. Where we told him not to save money: anchors and install. Manufacturer-spec anchors are not the same as whatever’s in the hardware store bin, and torquing them correctly with the columns plumb and square within spec is the difference between a machine that lasts twenty years and one that develops a lean. He was in service before the season opener with about a week to spare. Total spend on a properly installed 2 post car lift landed in the mid four figures for the equipment plus install, which for a machine he’ll use four days a week for two decades is not a hard case to make.

Question Seven: What to Ask Before You Click Buy

If you’re working the same tree, here’s the short version we give people over the phone. What’s the heaviest vehicle, honestly, with fuel and tools in it? What’s the lowest obstruction directly over the intended column locations? How thick is the concrete, verified by core and not by memory? Where are the control joints and slab edges relative to your anchor pattern? Do you have 220V within reach, and a spare breaker slot? Can you unload a crated lift weighing well over a thousand pounds, or do you need a liftgate and a terminal?

Answer those six and the configuration picks itself. Low ceiling or overhead obstructions push you to baseplate. Heavy rolling tool traffic and adequate height push you to overhead. Thin concrete pushes you to a footing pour regardless. And if the answers conflict, call us — we’ve walked hundreds of Iowa shops, race trailers, and farm buildings, and we’d rather spend twenty minutes on the phone than sell you the wrong 2 post car lift and hear about it in June. We stock parts for every brand we sell, we install across the state, and we ship a 2 post car lift anywhere in the country. Bring us your measurements and your budget and we’ll tell you straight which way to go, even when the honest answer is that your building needs work first.