What is the best first mod for a Dodge Challenger Scat Pack?

An ECU tune is the highest-ROI first modification for a Dodge Challenger Scat Pack. A custom tune on the 6.4L 392 HEMI adds 25–35 rwhp, sharpens throttle response, and opens the platform for additional bolt-on modifications without requiring any hardware changes.

Can you fit 305 tires on a Dodge Challenger?

Yes. A 305/35R20 tire fits the stock rear wheel arch on most Challenger R/T, Scat Pack, and Hellcat builds. The LC platform live rear axle provides wide offset tolerance. Hellcat Widebody owners have additional quarter panel clearance for 305 or wider rear tires.

How much power does a Hellcat supercharger swap add to a Scat Pack?

A Hellcat supercharger swap on a Challenger Scat Pack with full supporting mods — fuel system upgrades, custom tune, and intercooler — can add 250–300 hp over baseline. On E85 with proper tuning, some builds reach 700–750 rwhp.

What suspension upgrades work best on a Dodge Challenger?

Sway bar upgrades front and rear are the most effective handling improvement for the Challenger LC platform. Lowering springs reduce body roll and improve stance, while a proper alignment — particularly adjusting front camber — significantly improves cornering grip without sacrificing straight-line stability.

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Dodge Challenger

Challenger
Mods Guide

The Challenger LC platform has been around since 2008 — but it's still one of the most modifiable muscle car platforms ever built. Here's every upgrade worth doing, in order.

From the 5.7L R/T to the 807hp Hellcat Redeye, every Challenger shares the same LC platform and 5x115mm bolt pattern. That means mods are often cross-compatible — and the aftermarket is massive. This guide covers everything from your first bolt-on to a full HEMI build capable of 9-second quarter miles.

One critical note: the base and R/T trims run single-piston rear calipers with considerably more offset tolerance than the Hellcat's Brembo package. Your tire fitment options depend heavily on which caliper package you're working around.

Top Challenger Mod Categories

Intake & Tune

The HEMI 392 and 6.4L respond immediately to cold air intake + tune combos. Expect 20–30 hp over baseline. The Hellcat Redeye PCM swap is a popular path on Scat Pack builds.

Choosing Tires for Your Scat Pack

Tire & Wheel Package

The LC platform's live rear axle (base/R/T/Scat Pack) means offset tolerance is wide. 305/35R20 rears fit clean on most builds. Hellcat Widebody owners have even more clearance in the rear quarter.

Performance Tire Selection Guide

Supercharger Upgrade

Hellcat owners can push 900+ rwhp with a Whipple or Magnuson 2650 supercharger swap. Scat Pack builds with a Hellcat supercharger swap and supporting mods hit 700–750 rwhp on E85.

Cooling System Upgrades for Big Power

Suspension & Handling

The stock Challenger suspension prioritizes straight-line stability. Sway bar upgrades, lowering springs, and alignment improve cornering without destroying the straight-line character.

Suspension Upgrade Tips

Brake Upgrades for the HEMI

The base Challenger's single-piston rear calipers and solid front rotors are adequate for street use but fade quickly on a drag-strip burnout or spirited canyon run. Upgraded pads, slotted rotors, and stainless brake lines make an immediate difference. Hellcat owners should prioritize brake fluid upgrades given the extreme heat generated by the 707hp powertrain.

Performance Brake Upgrades Guide

Frequently Asked Questions

Challenger Wide Tire Fitment

5x115mm bolt pattern, 71.5mm hub bore — every offset, tire size, and clearance spec you need before ordering wheels.

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ChallengerMods Guide