How to Choose Valve Covers for an LS, SBC, or BBC BuildWednesday, March 11, 2026
Valve covers are one of the first things anyone sees when they pop the hood, and they're one of the last things people think carefully about before ordering. Most builders pick based on finish and move on, then end up with something that doesn't clear their rockers, won't seal properly, or looks out of place with the rest of the engine. A little upfront thought saves a return shipping label.
Here's what actually matters when you're selecting a set.
Engine Family First
This sounds obvious but it's where mistakes get made. LS engines, Gen 1 small block Chevy, Gen 2 Vortec small block, big block Chevy, and Mopar engines all use different valve cover bolt patterns and gasket configurations. An LS cover will not bolt onto a Gen 1 SBC. A Vortec head uses a center-bolt pattern that's completely different from the perimeter-bolt Gen 1 pattern.
Mopar breaks down further into LA-series engines (273, 318, 340, 360) and B/RB engines (383, 400, 440). These are different covers. If you're building a Mopar and you've never looked that up, look it up before you order.
Stock Height vs. Tall
Cover height is a functional decision, not just a visual one. Stock height covers work fine with stock-type rocker arms on a mostly stock valvetrain. The moment you move to roller rockers, high-ratio rocker arms, or a bigger cam with more lift, you may need clearance that a stock height cover simply doesn't have.
Tall covers give you that extra room. They're also the more common choice on a show-quality build because they fill out the engine bay better visually. If you're building a street/strip car with any performance valvetrain upgrades, default toward tall unless you have a specific reason not to, it's easier than pulling covers later because a rocker is making contact.
Finish and What It Actually Looks Like in Person
Chrome is the classic choice and still looks sharp on a traditional build. It shows fingerprints and requires maintenance if you want to keep it looking good, but nothing else reads as "finished" under show lighting quite the same way.
Black crinkle is the practical performance choice. It hides imperfections, doesn't show heat discoloration, and works on anything from a budget bracket car to a serious street machine. It's also more forgiving if your engine bay isn't immaculate.
Polished aluminum is clean and modern without the maintenance burden of chrome plating. It works particularly well on LS builds where the engine architecture already looks contemporary.
Chevy Orange is period-correct for early SBC and BBC builds where you're trying to replicate original factory appearance or match a freshly painted block. Shark Gray is a newer neutral finish that reads more subtle than chrome but still looks purposeful.
Carbon-style covers hit a specific aesthetic -- they work when the rest of the build has a similar visual language, but they look out of place on a traditional muscle car or a truck build trying for an older vibe.
The Collector's Series finishes (green, blue, white) are limited-run options worth knowing about if you're building something with a specific color scheme.
Slant-Edge Style
ProForm's slant-edge covers are a distinct design with an angled profile that gives the engine bay a more sculpted look compared to a flat-top cover.
They're available in most of the major finishes and come with recessed or raised emblems.
If you've seen them on a completed build you either like the look or you don't, it's a personal call, but they're a well-made option for a builder who wants something that doesn't look exactly like every other set on the shelf.
Fabricated Aluminum
Fabricated covers are built differently than cast or die-cast, they're welded from aluminum sheet rather than cast in a mold.
The result is a cleaner, more race-oriented appearance with crisper edges. The black anodized fabricated cover ProForm offers is the right call for a purpose-built race engine or a high-end LS swap where you want the engine to look as serious as it is.
Emblems and Logos
This is partly personal preference and partly build-appropriateness. A licensed Chevrolet Performance or MOPAR emblem looks correct on a build using those components.
LSX emblems are appropriate on LS builds. No-emblem covers are the right move when you're building something custom where a brand logo would feel out of place, or when the cover finish is striking enough that it doesn't need decoration.
ProForm holds licensing agreements with both Chevrolet Performance and MOPAR, which matters if correct branding is important to your build.
Generic covers with knock-off styling exist in the market, the licensed stuff is visually different and worth the distinction on a finished car.
Accessories That Come With or Get Forgotten
A set of valve covers is rarely complete on its own. Breather caps, PCV grommets, hold-down hardware, and gaskets are all part of the system.
ProForm covers the full range, push-in breather caps, clamp-on caps, twist-on caps, hold-down clamps, wing nuts, and mini nuts in finishes that match the cover lineup so everything coordinates. Gaskets matter too; using the right replacement gasket for a two-piece cover setup prevents the slow weep that's easy to ignore and annoying to deal with later.
For LS builds specifically, coil relocation brackets and ignition coil wire harness extensions come into play depending on which cover style you run and where you're mounting coils. It's worth sorting that out at the same time rather than realizing after the covers are on that your coil harness is six inches too short.
Putting It Together
The right valve cover comes down to four things in order: correct engine fitment, the right height for your valvetrain, a finish that matches the build's overall direction, and hardware that completes the installation cleanly. ProForm's lineup covers all three major domestic engine families, Gen 1 SBC, Vortec, BBC, LS/LSX, and Mopar LA and B/RB, in 117 SKUs across every finish and style combination worth considering.
Pick the engine family, decide on height, choose a finish you'll still like in five years, and get the matching hardware at the same time.