Articles tagged #LS3
Articles tagged
#LS3
Boost Theory Tested: LS3 vs. 427 LSX on the Dyno
A controlled dyno comparison of a cam-only LS3 and a built 427 LSX tests a foundational boost principle: the stronger the naturally aspirated baseline, the more power you make under pressure.
Speedmaster Side Draft EFI System for Chevy LS3: 546 HP, SEMA Award-Winning Design
The Speedmaster Side Draft EFI System for the Chevy LS3 combines individual throttle body design with electronic fuel injection, producing 546 HP and 520 ft-lbs of torque. The system earned a 2015 SEMA Award for its engineering and design.
427 LSX Throttle Body Test: Measuring the Difference Between 4150 and 4500
A throttle body comparison on a 427 LSX equipped with Mast Black Label LS3 heads and a CNC-ported single-plane intake showed a 12-hp gain when stepping from a 4150 to a 4500-series unit. The results confirmed that the high-flow Mast intake was being restricted at the throttle body.
Speedmaster-Equipped Holden SSV LS3 Redline Sets Unopened Commodore Record
A 2016 Holden SSV LS3 Redline equipped with Speedmaster ceramic-coated exhaust headers, an over-the-radiator intake, and a 427hp dyno tune has recorded a quarter-mile time that positions it as the fastest unopened Commodore in Australia.
Speedmaster and The Custom Shop: LS3 Side Draft Build on a 918 Porsche
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.
LS3 Valvespring Dyno Comparison: Measuring the Power Cost of a Spring Upgrade
Dyno testing on an LS3 crate motor showed that upgrading from stock valvesprings to Comp Cams beehive springs cost 4 hp above 5,500 rpm - a minor trade-off that enables cam upgrades worth 70-plus horsepower. A Speedmaster fabricated intake supported the high-rpm cam testing.
LS3 Crate Motor to 605 HP: IR Intake, Cam, and Head Upgrade on the Dyno
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.
Two Awards at the 2013 SEMA Show
Speedmaster's LS3 Turnkey EFI Throttle Body System received two Global Media Awards at the 2013 SEMA Show - the fourth consecutive year of recognition and the fifth award in four years.