488 Magnum Designs

488 Magnum Designs Offering US made custom truck parts from our trucks to yours! Specializing in 72-01 Dodge, 73-91 GM, 73-79 Ford trucks.

Evening cruises.
05/27/2026

Evening cruises.

Made some updates to our product catalog including some kits for Dentside Fords and 318/360 Magnum engines!
05/19/2026

Made some updates to our product catalog including some kits for Dentside Fords and 318/360 Magnum engines!

This weekend’s project was neatening up the daily Subaru and servicing it. Previous accident damage and poor paint work ...
05/18/2026

This weekend’s project was neatening up the daily Subaru and servicing it. Previous accident damage and poor paint work led to a rusty fender. We do a little of everything around here.

New Product! Fix your Dentside Ford interior door panels.
05/15/2026

New Product! Fix your Dentside Ford interior door panels.

Door panel repair tabs for Dentside Ford pickups. Repair your door panel where the clips have broken off. These are 3D printed in ASA and intended to be plastic welded in place restoring the ability retain the clip to the door panel. I kit will repair 1 door panel.

New product now available! Rocker bolt kit for 92-03 Dodge/Jeep V8 Magnum engines (318/360)
05/14/2026

New product now available! Rocker bolt kit for 92-03 Dodge/Jeep V8 Magnum engines (318/360)

Upgrade your valvetrain reliability with our premium Rocker Arm Bolt Kit designed specifically for 1992–2003 Dodge/Jeep V8 Magnum engines using 5/16" rocker bolts.Factory rocker arm bolts are prone to fatigue failure, especially under high RPM or heavy load conditions. This kit replaces the discon...

05/14/2026
Been out using the trucks and confirmed that the NP241C mates to the 4L80e for the Suburban project.
05/13/2026

Been out using the trucks and confirmed that the NP241C mates to the 4L80e for the Suburban project.

Took the old Ford out for a drive. Needs some wiring work to fix the headlights. They start to blink after they have bee...
05/05/2026

Took the old Ford out for a drive. Needs some wiring work to fix the headlights. They start to blink after they have been on for a bit. Time for a heavy duty relay conversion.

Visual comparison of a TH400 vs 4L80e side by side. Both 4x4 units.
05/05/2026

Visual comparison of a TH400 vs 4L80e side by side. Both 4x4 units.

New offering of our switch panel for 16mm switches!
04/29/2026

New offering of our switch panel for 16mm switches!

Address

Dyersville, IA

Opening Hours

Tuesday 4:30pm - 5pm
Wednesday 4:30pm - 5pm
Thursday 4:30pm - 5pm

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