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A2Speed’s HEMI Performance Shop Builds

Looking for a reliable, affordable, and knowledgeable HEMI performance shop? A2Speed is a full service installation shop, with state of the art equipment, and industry leading experience. Our team consists of individuals like Dave Kasper, a former Chrysler calibration engineer and certified viper tech, with over 30 years of proven experience on the Dodge / Chrysler platform. Dave Kasper was the originator and continues to be the leader in late model (GEN 3) HEMI tuning. A2speed team also consists of talented people like Eric Hruza, founder of the Arrington Performance aftermarket program, ShopHEMI.com, and served as that company’s president from its inception through early 2015. Eric is A2Speed’s CEO and heads up new product development. Don Yates, the sales manager, has served customers in the late model HEMI community for years with his deep knowledge of the best combinations to extract power at the best prices.

A2Speed utilizes partnerships with other high profile, leading edge HEMI companies like Ray Barton Racing Engines, Thitek Performance, Molnar Technologies, Edelbrock, SCT, and many others to bring to market products like our full line of HEMI stroker engines. What does that mean for our customers? Well, every product we offer is backed by years of HEMI performance knowledge, and that many of pioneers for the HEMI industry stand behind our products performance and reliability.

Whipple Supercharged Dodge Challenger RT


This Whipple Supercharged Dodge Challenger is in for a custom A2Speed Chassis Dyno Tune. It came out very clean and OEM like. This build is prefect for any 5.7L HEMI owner that wants more power but doesn’t want to spend an arm and a leg to get there. With just this 2.9L Whipple supercharger this 5.7L is putting down over 500 RWHP. Best of all the power band is extremely linear and the supercharger is extremely well behaved. Boost is predictable and can be easily controlled with the throttle..

Supercharged Dodge Challenger 5.7L

Al & Nancy’s 2015 Hellcat Dodge Challenger Head & Cam Upgrade


For this build we have one of our Owners personal car’s in the shop. Al already had an upper and lower pully, with larger injectors installed. We are taking it to the next level with our A2Speed / Thitek ported heads, and an A2speed custom grind camshaft by Comp Cams.

Al’s Car

Carl’s 2013 R/T Challenger Build with A2Speed's first 105mm HEMI Throttle Body


Carl came to A2Speed looking for help on a custom throttle body set up for his build. Well as it goes with most Mopar guys Carl had a few other projects in mind. He’ll be leaving our shop with a custom Throttle Body, and a few other powertrain goodies as well!

Carl’s Car

John’s 6.1L Based 426 Whipple Supercharged Challenger Coming Soon


John came to us looking for a Ray Barton built engine 426 engine that can handle anything you throw at it. We are giving him just that, with a custom built 426 HEMI featuring custom Diamond piston’s, billet main caps, and much more. Top that with a Whipple supercharger and you have a recipe for one bad ass Challenger.

John’s Car

Big Red; Luke’s Optima Ultimate Street Car!


If you ever doubted that a Challenger can handle it’s self on a road course, then you need to check out BIG RED. Luke of Steve White Motors has trusted A2Speed with his Optima Ultimate Street Car for everything ranging from bolt on’s, a full set of our Coil Over Suspension, and Custom Chassis Dyno Tuning. He brought his car up to us this time because he was having limp mode issues with a competitor’s cast VDO style 85mm true bore throttle body. It was replaced with one of our true 90mm Magneti Marelli throttle bodies and got a custom Chassis dyno tune. The results netted Luke an additional 36 HP over our competitors 85mm and that’s only half the story, at 3850RPM he gained a staggering 88 HP. When considering upgrading throttle bodies, do yourself a favor and do it right the first time. A2Speed offers real gains, no false size advertising, no magic mystery sauce, just results.

Greg's Car

Greg's 5.7L to Hellcat Short Block Swap


Greg brought his already supercharged 5.7L Dodge Challenger R/T to us looking for more power. After reviewing the possibilities he decided to try something that hadn’t been done before, swapping a 5.7L short block with a 6.2L Forged Hellcat Short Block. He kept the phase 6 ported 5.7L Eagle heads, the custom blower cam, and rest of his prior installed accessories.

Greg's Car