If you’re building an LS-swapped street car or freshening up an old-school small-block, Top Street Performance (TSP) is that brand your buddy keeps “just happening” to mention while scrolling classifieds in your driveway. They’re based in Southern California, focus on performance hardware, and pretty much live where engine bay function meets show-car shine.
At WeSellPerformance.com’s Top Street Performance collection, you’ll find intakes, valve covers, oil pans, timing covers, swap mounts, steam vent kits, dipsticks, and other small parts that make the difference between “yeah, it runs” and “pop the hood again.” This post walks through some of the standouts we keep coming back to when we’re planning a street-friendly build.
Why Top Street Performance belongs in your build
TSP has carved out a nice lane: performance parts that look good, work hard, and don’t require selling a kidney. Their catalog leans into:
- Modern engine platforms like GM LS and LT
- Classic small-block Chevy intake upgrades
- Swap-friendly hardware such as mounts and retrofit oil pans
- Dress-up pieces that still respect things like oil control and sealing
They’re not trying to be everything to everyone. Instead, they focus on the parts you stare at and the parts you really don’t want to fail: manifolds, covers, pans, mounts, and the hardware that holds it all together.
Dress-up valve covers for LS & LT
If you want your engine bay to look like it sneaked out of a SEMA booth, TSP’s valve covers are an easy win. They’re available in both carbon fiber and aluminum, and in LS and LT fitments, so you can pick your flavor of “this is probably too nice for a beater.”
Carbon fiber showpieces
For late-model Gen V LT engines, check out the Top Street Performance JM8083-5 GM Gen V LT Carbon Fiber Valve Covers with Coil Mounts (SKU JM8083-5). These covers combine lightweight carbon fiber with provisions for the factory-style coil-on-plug ignition, so you get the modern function with a much more “hey, come look at this” appearance.
Running an LS instead? The Top Street Performance JM8082-5 Gen III/IV LS Carbon Fiber Valve Covers (SKU JM8082-5) deliver a similar vibe for cathedral-port LS engines. They’re a nice upgrade if your stock magnesium covers are chalky and ugly or if you want something that visually matches a high-end intake.
Aluminum covers that clean up the clutter
Not every build needs carbon fiber. TSP’s aluminum valve covers and coil relocation options help you clean up wiring and coil packs without going overboard on budget. The brand offers several LS and LT aluminum valve covers in the same basic shapes as the carbon pieces, plus more traditional smooth-top options for a classic hot rod look.
Pair these with a good set of plug wires and a tucked harness and your engine bay goes from “work in progress” to “totally intentional” pretty fast.
Intakes, elbows & top-end power
The top of the engine is where everyone looks first, so let’s talk manifolds and throttle connections.
Billet LS intake that means business
When you want the LS to look as serious as it runs, the Top Street Performance 81406BK V Series LS Gen III Billet Aluminum Intake (SKU GHWT_81406BK) earns its keep. It’s a V-series intake for cathedral-port LS engines with a 102.5 mm throttle body flange and a black anodized finish that looks like it was machined specifically to impress the guy in the next parking spot.
It’s designed as a multi-port fuel injection manifold, so it plays nicely with big-bore throttle bodies, upgraded injectors, and serious airflow. If you’re planning boost or a big-cam NA setup, this style of intake gives you the room to grow.
Throttle body elbow for tighter engine bays
If your LS swap is fighting for space with a radiator and fans, the right elbow can save your sanity. The Top Street Performance 81141 Aluminum EFI TB Elbow LS 105mm 4150 Flange (SKU GHWT_81141) is a 90-degree elbow with a 105 mm bore. It’s meant for LS applications that need to turn the airflow toward a throttle body or a carb-style intake with a square-bore 4150 flange.
This is especially handy when you’re mixing-and-matching intakes and throttle bodies or transitioning from a big front-facing throttle body into a tighter engine compartment.
Old-school small-block? There’s love for you too
For the tried-and-true small-block Chevy, the Top Street Performance 82025 57–95 SBC Air Gap Intake, Polished Dual Plane (SKU 82025 / TSP82025) gives you dual-plane drivability with an “air gap” style design to help keep the intake charge cooler. It’s a solid upgrade over crusty stock iron for a street car that still sees traffic lights and grocery runs.
LS swap essentials: pans, mounts & plumbing
Top Street Performance really shines when you get into the “how do I make this LS actually fit?” part of the project. We’re talking oil pans, motor mounts, and the little bits that make the swap feel factory instead of hacked together.
Low-profile retrofit oil pans
The LS factory truck pan is great for, well, trucks. Drop that engine into a car with a crossmember and you suddenly own a very expensive curb feeler. The Top Street Performance 81073 LS Low Profile Retrofit Oil Pan, Satin (SKU GHWT_81073) is designed to sit higher in the chassis while still providing proper oil capacity and sump design for street performance.
There are also black and alternate retrofit versions in the lineup (such as 81073BK and 81075), so you can pick the finish and configuration that best matches your chassis and build plan.
Fox-body LS swap mounts
Sliding an LS into a Fox-body Mustang? The Top Street Performance 81150 LS To Foxbody Mustang Swap Adapter Plates (SKU GHWT_81150) take a lot of the headache out of engine placement. These adjustable bolt-on plates are designed to move the LS engine forward about 1.5 inches and land it where it plays nicely with the stock K-member and steering.
Instead of welding up your own franken-mounts, you get a set of properly machined plates with multiple bolt positions that make test fitting and driveline angle tuning much easier.
Timing covers, dipsticks, and oil control details
Little parts can hold a big build hostage. TSP’s catalog includes items such as:
- Top Street Performance 81065 LS Aluminum Timing Cover (SKU GHWT_81065), which includes the gasket and hardware so you aren’t chasing oddball bolts around the garage.
- Top Street Performance 81079BK LS Oil Dipstick, Black Billet (SKU 81079BK / TSP81079BK), which cleans up the engine bay and makes checking oil a little less sad than staring at a faded plastic dipstick.
- Steam vent kits (such as TSP part 81054) and other LS-specific oiling parts to help keep hot spots and air pockets from sneaking into your coolant or oiling system.
None of these parts are glamorous on their own, but together they make your LS swap behave more like a factory package and less like a science experiment.
Quick install tips, tools & safety
Every build is different, but there are some common-sense best practices when you’re bolting on manifolds, mounts, and oiling parts like these.
Basic tools you’ll want nearby
- Quality 3/8" and 1/2" drive ratchets and socket sets (metric and SAE)
- Torque wrench that covers low-range values for valve covers, pans, and intakes
- Combination wrenches for tight spots around mounts and fittings
- Allen/hex key sockets (many TSP parts use socket cap hardware)
- Thread sealant and medium-strength thread locker where appropriate
- Gasket scraper or plastic razor blades for cleaning old sealing surfaces
- Brake cleaner or a dedicated degreaser to clean mating surfaces
- Oil drain pan, funnels, and fresh engine oil & coolant if you’re opening up the pan or cooling system
Safety gear to treat as non-negotiable
- Safety glasses any time you’re under the car or scraping gaskets
- Mechanic’s gloves for sharp edges on pans, covers, and brackets
- Closed-toe shoes or boots (dropping a manifold on your toes is a mood killer)
- Properly rated jack stands and a quality floor jack if you’re working under the vehicle
- Drip pans and absorbent pads to keep spills off the floor
- Good lighting so you can actually see what you’re torquing
Always support the vehicle on stands placed under solid frame points or approved jacking locations. Never rely solely on a hydraulic jack. If you’re not comfortable working with critical components like oiling systems or engine mounts, there’s no shame in having a trusted shop handle the install and using these parts as the backbone of the project.
General install sanity checks
- Mock up everything finger-tight before final torque so you can verify clearance around steering, crossmembers, and accessory drives.
- Follow the torque sequence for manifolds and covers, working from the center outward in stages.
- Check for interference between your new oil pan and pickup, and verify pan-to-pickup clearance against the manufacturer’s recommendations.
- After first startup, watch for leaks, odd noises, and verify oil pressure and coolant temps before you head out on a victory lap.
As always: know your comfort level. If you’re unsure about something that can cause catastrophic failure (oil pressure, engine mounts, driveline angles), loop in a professional.
Shopping Top Street Performance at WeSellPerformance.com
When you’re ready to go from “someday” to “order placed,” start with the full Top Street Performance brand collection on WeSellPerformance.com. You can filter by product type to quickly zero in on:
- Valve covers and breather components for LS and LT builds
- Intake manifolds and throttle elbows
- Oiling system parts like retrofit pans, pickups, steam vent kits, and dipsticks
- Motor mounts and swap-specific hardware such as LS-to-Fox-body adapter plates
- Timing covers, fasteners, and other engine accessories
That mix makes it easy to build a “top end and bottom end” package that both looks right and survives real world use. You can start with a simple dress-up and timing cover refresh, or go big with an intake, oil pan, and swap mount combo that transforms your engine bay.
Got questions about fitment, or planning a weird swap that isn’t in the drop-downs? Hit us up before you start cutting. We’re happy to help you pick a parts combo that makes sense for your chassis, intended use, and budget.
Related Brands
Building out a full combo around your Top Street Performance gear? These brands play very nicely in the same sandbox:
- Edelbrock for additional intake, fuel, and top-end components.
- QA1 for suspension, rod ends, and chassis parts that help your new power actually make it to the pavement.
- Redhorse Performance for AN fittings, hose ends, and plumbing to finish off your fuel and oil systems cleanly.
- Allstar Performance for universal brackets, hardware, and shop solutions that fill in the gaps on custom installs.
Tell us in the comments: What are you building, and which Top Street Performance part is highest on your wishlist right now? Street cruiser, autocross toy, drag car, or burnout-only science project — we want to hear about it!
Safety & responsibility disclaimer: Always follow the manufacturer’s instructions for every component you install. Use appropriate safety equipment, support the vehicle securely, and dispose of fluids responsibly. Performance parts can change how your vehicle behaves; make sure you’re familiar with those changes before pushing the limits on public roads. If you’re unsure about any step in the process, consult a qualified professional.
