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Summit Racing walked the Speedmaster booth at the 2022 PRI Show, covering the 351 Windsor aluminum block, transmission and driveline components, and velocity stack intake manifolds.

Richard Holdener puts the Speedmaster Eliminator dual-plane intake head-to-head against a Trick Flow Specialties Street Heat EFI system on a modified 5.0L Ford, with dyno results revealing where each configuration delivers its advantage.

On a mild 5.7L Gen III Hemi, the Speedmaster Stack Attack individual-runner intake system produced 461 hp and 412 lb-ft of torque, outperforming a Mopar Performance single-plane intake by 35 hp with gains throughout the entire rev range.

A complete top end kit for the Big Block Chevy, tested on the dyno by Richard Holdener. The Speedmaster kit delivers over 100 horsepower in a single bolt-on upgrade.

Tested back-to-back against the factory LS7 intake on a 427-inch engine, the Speedmaster downdraft individual-runner intake produced 673 hp and 605 lb-ft of torque - gains of 32 hp and 34 lb-ft across the full rev range.

Starting at 388 hp, a Speedmaster 383 stroker gained nearly 100 horsepower through three targeted upgrades: CNC-ported heads, a more aggressive cam, and a single-plane intake. Each swap shifted the torque curve higher in the rev range, illustrating the direct relationship between component selection and where an engine makes its power.

This original Cobra build features a Speedmaster down draft manifold, combining classic American performance heritage with precision-engineered induction technology.

Speedmaster partnered with The Custom Shop to supply an LS3 Side Draft Intake Manifold for a 918 Porsche build displayed at SEMA 2015. The collaboration established a multi-year sponsorship commitment extending through SEMA 2016 and beyond.

A Dart SHP 363 stroker equipped with a Speedmaster Parker Funnel Web intake produced 563 hp naturally aspirated, then reached 775 hp and 727 lb-ft with a 200-hp ZEX Perimeter Plate nitrous shot - exceeding the kit's advertised rating.

Horsepower is torque multiplied by rpm. This dyno series isolates the individual contribution of cylinder heads, camshaft, and intake manifold on a Speedmaster 383 stroker, demonstrating how each component shifts the torque curve and where the trade-offs occur.

Starting from a stock LS3 crate motor producing 494 hp, this dyno test documents the measured gains from a Speedmaster individual-runner intake, Crane hydraulic roller cam, and Trick Flow Gen X 255 heads, finishing at 605 hp and 532 lb-ft with no loss in low-speed torque.