Plymouth Custom Engine Parts

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Engine Displacement Calculator | Bore x Stroke to Cubic Inches

Engine Displacement Calculator | Bore x Stroke to Cubic Inches

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Determining your engine's bore and stroke displacement, and more with our easy to use calculators

Smoothing a Firewall: Build a Custom Shaved Engine Bay

Smoothing a Firewall: Build a Custom Shaved Engine Bay

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In our quest to make everything on our cars better, we're constantly trying to clean things up under the hood. One quick way to get there is by smoothing the firewall. Here are a few ways to get that custom engine bay.

New Year, New Additions at Speedway Motors Museum of American Speed

New Year, New Additions at Speedway Motors Museum of American Speed

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Speedway Motors Museum of American Speed, dedicated to preserving, interpreting and displaying physical items significant in racing and automotive history, announced today new acquisitions and loans that are now on display in the new year.

Best Engine Swaps of All Time | HEMI VS LS Engine VS 2JZ

Best Engine Swaps of All Time | HEMI VS LS Engine VS 2JZ

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What is the best engine to swap? Discover the top engine swap options, including LS, Hemi, and Cummins, and find the best engine swap for your build.

Muscle Car Suspension Upgrades | Restomod vs Pro Touring Classic Car

Muscle Car Suspension Upgrades | Restomod vs Pro Touring Classic Car

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These days, muscle cars aren't just for straight line blasts down the dragstrip. Here's a primer on some of the trick hardware that's available to make your muscle car into a corner carving Pro Touring car that can do it all.

Engines That Fit My Car: Dimensions for Common Engine Swaps

Engines That Fit My Car: Dimensions for Common Engine Swaps

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Knowing popular engine dimensions and weights are critical to a successful engine swap in your project vehicle

Comet Pedal Car Custom

Comet Pedal Car Custom

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Follow along as Product Guru Jeff K. talks about customizing a Comet Pedal Car for his son!

LT1 Engine Build Combinations | Recipes for 400–700+ HP

LT1 Engine Build Combinations | Recipes for 400–700+ HP

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Build a high-performance Gen V LT engine with proven power combos and learn about LT upgrades and tuning tips for maximum power

G-Comp™ Buyer's Guide

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Here's a handy guide to familiarize you with our G-Comp line of performance suspension systems.

On the Dyno at Speedway Motors Racing Engines

On the Dyno at Speedway Motors Racing Engines

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The dyno at the Speedway Motors Racing Engine shop is always humming. We set up a camera in the cell to catch a few of the engines that have passed through the door recently.

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