Product images and videos are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.
Drivetrain› Automatic Transmissions and Components
ATK ENGINES
GM 6T70 6SPD
SKU: A040 8563A-74
Advanced — 4+ hours
Overview
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Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.
Fitment
Fitment Guaranteed
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Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.
Available on iOS & Android
Specifications
| Brand | ATK ENGINES |
| Part Number | A040 8563A-74 |
Videos
LKQ ATK VS Jasper Engines & Transmissions Reviews
ATK Performance crate engine review (Part number HP89 in a 1969 Corvette)
Federated TechTalk #48 - ATK Engines
ATK review (Main cap bolts ATK 350/383)
ATK HIGH PERFORMANCE 383 STROKER (HP101C)
ATK High Performance Engines Unboxed Review (LM7 5.3 Bore to 5.7 3.903')
I’m Rejecting This $4000 Reman Engine #alexthecardoctor
ATK Crate Engine Review! Reveal of Our New Chevy 383 Stroker! (SP-53 model)
ATK High Performance HP55C Chevy 383CI Stroker 500HP
Choosing the Right Crate Engine for Your Project from Summit Racing
About MOTORMIA
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Returns & Fitment
Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.
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Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.
Free shipping over $200 in the continental US. Alaska, Hawaii, U.S. territories (Puerto Rico, U.S. Virgin Islands, Guam, American Samoa, and the Northern Mariana Islands), and international orders carry surcharges — most appear at checkout. Some exceptions (LTL freight, or suppliers who quote freight only after we place the order) won’t. In those cases we’ll reach out with the exact charge before your order moves forward.
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