[{"id":284382593137,"handle":"all-parts-and-engines","title":"All Products","updated_at":"2026-03-19T15:20:08+11:00","body_html":"\u003cp\u003eAll Atomic Performance Products\u003c\/p\u003e","published_at":"2024-12-30T19:16:03+11:00","sort_order":"best-selling","template_suffix":"","disjunctive":true,"rules":[{"column":"variant_title","relation":"not_equals","condition":"0"}],"published_scope":"global","image":{"created_at":"2025-01-16T20:22:01+11:00","alt":null,"width":3000,"height":4000,"src":"\/\/atomicperformanceproducts.com\/cdn\/shop\/collections\/20241008_155351.jpg?v=1737019322"}},{"id":280910168177,"handle":"block","title":"Block","updated_at":"2026-03-18T22:14:49+11:00","body_html":"\u003cp\u003eAtomic engine block parts including standard and destroke cranks, billet conrods, pistons, main caps, girdle, main studs, oil system componens, sump\u003c\/p\u003e\n\u003c!----\u003e","published_at":"2024-08-05T23:32:10+10:00","sort_order":"best-selling","template_suffix":"","disjunctive":true,"rules":[{"column":"type","relation":"equals","condition":"Conrods"},{"column":"type","relation":"equals","condition":"Crank"},{"column":"type","relation":"equals","condition":"Girdle"},{"column":"type","relation":"equals","condition":"Pistons"},{"column":"type","relation":"equals","condition":"Sump"},{"column":"type","relation":"equals","condition":"Oil System"},{"column":"type","relation":"equals","condition":"Main Caps"},{"column":"type","relation":"equals","condition":"Engine Block"}],"published_scope":"global","image":{"created_at":"2024-08-06T00:00:07+10:00","alt":null,"width":1305,"height":813,"src":"\/\/atomicperformanceproducts.com\/cdn\/shop\/collections\/550_gta_short.png?v=1723016162"}},{"id":280910495857,"handle":"crank","title":"Crank","updated_at":"2026-03-12T22:16:22+11:00","body_html":"\u003cp\u003eAtomic billet and prepared cranks\u003c\/p\u003e\n\u003c!----\u003e","published_at":"2024-08-05T23:40:39+10:00","sort_order":"best-selling","template_suffix":"","disjunctive":false,"rules":[{"column":"type","relation":"equals","condition":"Crank"}],"published_scope":"global","image":{"created_at":"2024-08-05T23:40:53+10:00","alt":null,"width":3000,"height":4000,"src":"\/\/atomicperformanceproducts.com\/cdn\/shop\/collections\/crank.jpg?v=1722865254"}},{"id":285811867761,"handle":"rotating-assembly","updated_at":"2026-03-17T22:16:38+11:00","published_at":"2025-02-16T23:51:43+11:00","sort_order":"best-selling","template_suffix":"","published_scope":"global","title":"Rotating Assembly","body_html":"\u003cp\u003eRods, Pistons, Crank\u003c\/p\u003e","image":{"created_at":"2026-01-29T02:17:34+11:00","alt":null,"width":2048,"height":1365,"src":"\/\/atomicperformanceproducts.com\/cdn\/shop\/collections\/IMG_7119_c5d585c7-c81e-4f8c-87f7-f72ddfd61ac4.jpg?v=1769613454"}}]
Stage 1–3 | The Foundation of the Atomic Engine Series
Don't Gamble with a Wrecker Crank
The crankshaft is the heart of your engine. A "used" crank from a wrecker or marketplace is a massive risk—often suffering from undetectable cracks, journal runout, or seal wear grooves that destroy fresh bearings. Why risk your entire build on a $100 part?
💡 DID YOU KNOW?
We use these exact cranks in our engines. Our reconditioned factory cranks follow the strict recipes of our famous crate engine program.
• Stage 1: Used in Series 475 & 550
• Stage 2: Used in Series 698
• Stage 3: Used in Series 998
The Atomic Solution
We take factory Ford Barra cranks and process them through a rigorous reconditioning program. Every crank is inspected, measured for straightness, and checked for cracks. Depending on the Stage you select, we then apply advanced machining processes—from simple polishing and chamfering to full race balancing and stress-relieving heat treatment.
Better than new: Checked, Polished, and Ready to Run.
Choose Your Stage
Stage 1
The Street Standard.
Perfect for rebuilds and mild performance.
Checked & Measured
Linished & Polished Journals
Oil Holes Chamfered
Seal Track Polished
Matches: Series 475 / 550
Stage 2
The Performance Step-Up.
Adds precision balancing and smoothing for higher RPM.
Includes Stage 1 Process
Plus: Fully Balanced
Plus: Fully Deburred
Matches: Series 698
Stage 3
The Race Prep.
Conditioned for extreme stress and loads.
Includes Stage 2 Process
Plus: Heat Treated (Stress Relieved)
Plus: Straightened & Conditioned
Matches: Series 998
Tech Specs
Core Type: Factory Ford Barra DOHC Crank Stroke: 99.3mm (Standard) Processing: In-House at Atomic Performance Availability: Outright Purchase (No Core Exchange Required)
⚠️ Engineering Note
Stage 3 Sizing: Because heat treating destresses the metal, the crank can sometimes "relax" or move. This requires regrinding to get it straight again, which may result in journals becoming undersized. While rare, we may need to supply matching undersized bearings, or in extreme cases, reject the crank if it moves too much.
Balancing: Stage 1 cranks are factory balanced. Stage 2 and 3 are precision balanced, but final assembly balancing with your specific rods, pistons, and flywheel is always recommended for high-performance builds.
