How Much Horsepower Does a TrickFlow 396 Intake Add? Real‑world Results and Pricing

For owners of small‑block Chevy engines looking for serious airflow, the TrickFlow 396 intake manifold has become a go‑to upgrade. Designed to support high‑output builds, it promises a measurable jump in horsepower without breaking the bank. Whether you’re building a street‑strip 350 or a pumped‑up 383, understanding the real‑world gains — and the price tag — helps you decide if this part belongs in your engine bay. This article breaks down the dyno‑proven horsepower figures, the factors that influence those numbers, the cost‑to‑benefit ratio, and everything you need to know before buying.

Understanding the TrickFlow 396 Intake Manifold

The TrickFlow 396 is a single‑plane intake designed specifically for small‑block Chevy (SBC) engines. “396” refers to the manifold’s architecture — not engine displacement — with a large plenum volume and short, straight runners that promote high‑RPM airflow. The design is heavily based on the legendary Chevy 396/402 big‑block plenum shape, scaled down for the SBC. The result is a manifold that shines in the 3,500‑7,500 RPM range, making it ideal for engines with a performance cam, aftermarket heads, and a healthy compression ratio.

Key features include:

  • CNC‑machined entry ports – Each port is radiused and gasket‑matched out of the box, reducing turbulence and improving flow.
  • Large plenum volume – Approx. 1,800 cc, which supports high‑revving builds without choking the top end.
  • Carbureted or EFI compatibility – The manifold accepts a standard square‑bore carburetor (4150/4500) and can be used with port‑injection fuel rails (additional adapter may be needed).
  • Material and finish – Cast from A356 aluminum and available in a raw, as‑cast finish or polished.
  • Open or divided plenum options – The standard part is open plenum; a “Super Victor” style version adds a divider for better low‑speed torque on certain combinations.

Compared to a traditional dual‑plane intake like the Edelbrock Performer RPM, the TrickFlow 396 sacrifices some low‑end torque for a significant top‑end horsepower gain. It’s best matched to a camshaft that starts making power above 3,500 RPM and a set of heads that flow well above .500 inch lift.

Real‑World Horsepower Gains

Dyno results from engine builders and independent testers consistently show gains of 30 to 50 horsepower when swapping from a stock or low‑performance intake to the TrickFlow 396. In builds with supporting modifications — such as a larger cam, ported heads, a high‑flow exhaust, and a proper tune — the increase can reach 70 horsepower or more. Below are documented examples from actual builds:

Engine Combination Previous Intake Horsepower Gain Peak RPM
350 SBC, Vortec heads, comp cam (224°/230°), 1-5/8 headers GM stock iron +42 hp 6,200
383 SBC, AFR 195 heads, 236°/242° cam, 10.5:1 CR Edelbrock Performer RPM +37 hp 6,400
406 SBC, Dart Pro 1 200cc heads, 248°/254° solid roller, 11:1 CR Weiand Team G +55 hp 7,200
355 SBC, mild street build (268 Comp, 9.5:1 CR, headers, 750 carb) Edelbrock Performer (non‑RPM) +31 hp 5,800

Data compiled from independent dyno tests published on SpeedTalk forums and EngineLabs.

These gains are not just peak numbers. The TrickFlow 396 typically pulls harder from 4,500 RPM to redline, often making the entire powerband shift upward by 300–500 RPM. In a car with a stall converter or a manual transmission, this translates directly to quicker ETs at the drag strip.

Factors That Influence the Actual Horsepower Gain

No intake works in a vacuum. The final horsepower increase from a TrickFlow 396 depends heavily on several variables:

  • Engine displacement and compression – Larger cubes and higher compression allow the manifold to realize its flow potential. On a stock 350 with 8.5:1 compression, expect gains toward the lower end of the range (30–35 hp). A 406 with 11:1 will see much larger gains.
  • Camshaft profile – The intake is designed for cams with duration above 220° at .050 and lobe separation of 108°–112°. A stock or very mild cam will not take advantage of the high‑RPM airflow.
  • Cylinder head flow – Factory iron heads with 170 cc runners become the bottleneck. Pairing the TrickFlow 396 with aftermarket heads (195–210 cc intake runners) unlocks the full gain.
  • Exhaust system – Headers with at least 1-5/8 inch primary tubes and a free‑flowing exhaust are required. Stock manifolds kill the top‑end recovery.
  • Fuel type and tuning – Race gas or a proper EFI tune (if using a port injection setup) allows you to advance timing and lean the mixture safely. Many carbureted builds need a jet change and careful air‑bleed adjustment.
  • Tuning accuracy – The biggest variable. A poorly tuned carburetor or EFI system can erase gains. Professional dyno tuning is highly recommended.

How does the TrickFlow 396 stack up against the competition? Here’s a quick look at three common alternatives:

  • Edelbrock Performer RPM – A dual‑plane design that makes excellent low‑ and mid‑range torque. It adds about 20–30 hp over a stock intake, but falls off above 6,000 RPM. Best for street builds that rarely see 6,500+ RPM. The TrickFlow 396 gives up some low‑end for 10–20 more ponies at the top.
  • Weiand Team G (single‑plane) – A classic single‑plane manifold with shorter runners. Gains are similar to the TrickFlow 396, but the Weiand often needs more port matching out of the box. The TrickFlow’s CNC‑finished entry typically flows slightly better right out of the box.
  • Holley Street Dominator – A stripped‑down single‑plane that is lighter and less expensive. It works well on small‑block Chevys, but the TrickFlow 396 has a larger plenum volume that supports bigger cubic inch builds and higher RPMs.

For a dedicated street‑strip or race car that sees regular action above 4,500 RPM, the TrickFlow 396 is often the better choice. If your engine is a daily driver with a mild cam, a dual‑plane might be more appropriate.

Pricing and Value Considerations

The TrickFlow 396 intake manifold is moderately priced for the performance it delivers. Here’s what you can expect to pay:

  • Base price (carbureted version) – $450 to $650 depending on retailer and finish (as‑cast or polished).
  • EFI version – Some retailers stock a version with provisions for port injection. Expect $500–$700.
  • Additional costs – You will need a new gasket set (approx. $20–$30), intake bolts ($10–$15), and possibly a carb spacer if hood clearance is tight. If you’re running EFI, add fuel rails and injectors.
  • Tuning – Dyno tuning runs $500–$1,000, but it’s money well spent. Expect to spend that extra only once.

Considering the average gain of 40 horsepower, the cost per horsepower is roughly $11–$16 per horsepower — a strong value compared to cam swaps or head upgrades that often cost significantly more for similar gains. For kits installed at home, the total upgrade cost (intake, gaskets, tune) can be under $1,000, making it one of the best “bang‑for‑the‑buck” bolt‑ons for an SBC.

Where to Buy

The TrickFlow 396 is widely available from the following reputable sources:

  • TrickFlow Official Website – Direct purchases from the manufacturer sometimes include promotions or bundle deals.
  • Summit Racing – Reliable stock, free shipping on many orders, and customer reviews.
  • JEGS Performance – Another major retailer with competitive pricing and fast shipping.
  • Local performance shops – Support small business and get personalized advice on fitment. They can also port‑match the manifold for you if needed.

Installation Tips and Tuning

Installing the TrickFlow 396 is a straightforward process for anyone comfortable with basic engine work, but a few tips will ensure you get the most out of it:

Preparation

  • Verify the gasket alignment. The manifold’s ports are CNC‑matched to standard SBC gaskets, but it’s wise to lay a gasket on the head and check for any mismatch. A slight mismatch costs horsepower.
  • Clean all surfaces thoroughly. Any residual old gasket material or dirt can cause vacuum leaks.
  • Use a high‑quality intake gasket with a silicone bead for sealing.

Bolting It Down

  • Use the correct torque sequence (start from the center and work outward). Torque spec is typically 20–25 ft‑lb; check the instructions.
  • Do not overtighten — the aluminum casting can distort.

Fuel System

  • If carbureted, you may need a larger accelerator pump nozzle and different jets. Start with jets one or two sizes richer than the previous intake, then tune on the dyno.
  • For EFI builds, ensure the manifold’s injector bung angle matches your fuel rail and injectors. TrickFlow offers dedicated EFI rails for some versions.

Tuning

  • Expect the engine to require a richer idle mixture and more timing advance (2–4 degrees) compared to a dual‑plane manifold.
  • If you have a wideband O2 sensor, target an air‑fuel ratio of 12.8:1 at wide‑open throttle for pump gas.
  • A professional dyno session will dial in the carburetor or EFI tune for maximum power and drivability.

Skip the tuning step and you may only see half the potential gain. A poor tune can also cause detonation and engine damage.

Conclusion

The TrickFlow 396 intake manifold delivers proven, real‑world horsepower gains of 30–70 horsepower on small‑block Chevy builds. For the price — typically $450–$700 plus tuning — it’s one of the best values in the performance parts market. When paired with a suitable cam, heads, and exhaust, it transforms a mild‑mannered street engine into a powerful street‑strip contender. Just remember that supporting modifications and professional tuning are essential to unlock the full potential. If you’re building an SBC that thrives on high‑RPM air, the TrickFlow 396 should be at the top of your list.