Atlas 4200 to LS Adapter Kit
Upgrade your custom build with our premium Atlas 4200 to LS transmission adapter kit, engineered to deliver a precise, durable, and cost-effective solution for Atlas 4200 engine swaps. Crafted from 6061 billet aluminum with CNC machining, this adapter kit ensures perfect alignment and compatibility with a wide range of popular LS-based and other transmissions.
Why Choose Our Atlas 4200 to LS Transmission Adapter?
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Precision CNC-Machined from 6061 Billet Aluminum — Ensures exact fitment and long-lasting strength
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Bolt-On Installation — No cutting, welding, or custom fabrication required for a straightforward swap
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Supports High-Performance Builds — Compatible with 11” and 12” clutches, supporting over 1000 WHP with many single, twin, and triple disc options for serious power demands
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Wide Transmission Compatibility — Fits 4L60E, 4L80E, TH350, TH400, Powerglide, 8HP, DCT, TR6060, T56, AR5, CD009, and more
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OEM Parts Based — Uses factory GM hardware and components for easy maintenance and serviceability
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Large Aftermarket Market — Access readily available LS transmission components for repairs or upgrades
What’s Included in the Atlas 4200 to LS Adapter Kit?
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Bellhousing Adapter Plate — CNC-machined from 6061 billet aluminum for precise engine-to-transmission alignment
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Inner Crank Adapter — Incorporates a factory Atlas starter ring gear, allowing use of the original OEM starter for a seamless fit
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Outer Crank Adapter — Provides proper torque converter or pilot bearing engagement and supplies an LS crank bolt pattern with correct thread dimensions
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Starter Spacer — Correctly positions the factory OEM Atlas 4200 starter for perfect clearance and operation
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Complete Hardware Kit — All bolts and fasteners needed for a clean, professional install
Optional Lower Adapter Kit for Complete Bellhousing Coverage
For builders seeking a fully sealed, factory-like bellhousing fitment, our Lower Adapter Kit fills the gap at the bottom of the adapter. This kit enhances strength and allows use of all LS bellhousing bolts for improved reliability and finish.
Lower Adapter Kit Includes:
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6061 Billet Aluminum Lower Adapter Plate — Fills the lower bellhousing gap with precision fit
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304 Stainless Steel LS Starter Pocket Filler Plate — Covers the LS starter cavity in the factory LS bellhousing for a clean look
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All Required Hardware — Bolts and fasteners included
Perfect For:
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Off-road vehicles requiring durable transmission solutions
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Restomod and custom builds using the Atlas 4200 inline-six with LS transmissions
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High-horsepower applications needing reliable, OEM-based components
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DIY mechanics and professional shops looking for easy, repeatable swaps
Technical Specifications:
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Clutch Compatibility: Supports 11” and 12” clutches, with many single, twin, and triple disc options
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Transmission Compatibility: 4L60E, 4L80E, TH350, TH400, Powerglide, 8HP, DCT, TR6060, T56, AR5, CD009
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Included Hardware: Complete bolt and fastener sets for all components
Buy With Confidence
Ready to tackle your Atlas 4200 swap? Add this adapter kit to your cart today and get your project moving with confidence.
