{"product_id":"ace-boost-gen-iii-hemi-cgi-block","title":"ACE BOOST – Gen III HEMI CGI Engine Block | 4.210\" Tall Deck, Factory VCT","description":"\u003cp\u003e\u003cstrong\u003eTall deck strength, factory timing control.\u003c\/strong\u003e ACE BOOST is the block for turbo and supercharged Gen III HEMI builds that still want to run factory variable cam timing. The 10.75\" tall deck adds cylinder wall and deck material where boost loads it hardest, and the 4.210\" bore opens up displacement without giving up the stock-style timing strategy you already tune around.\u003c\/p\u003e\n\n\u003ch3\u003eThis build\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDeck height \u0026amp; lifters:\u003c\/strong\u003e Tall 10.75\" deck, stock 74° lifters\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTiming drive \u0026amp; cam:\u003c\/strong\u003e VCT (variable cam timing) with stock cam\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBore \u0026amp; finish:\u003c\/strong\u003e 4.210\", rough\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrice:\u003c\/strong\u003e $5,000 — direct from the manufacturer\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cp\u003eBuilt for forced induction on the Gen III HEMI. The 4.210\" performance bore and tall 10.75\" deck give you added cylinder strength under boost, with factory VCT retained so you keep stock-style timing control.\u003c\/p\u003e\n\n\u003ch3\u003eMachine work required\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eRough bore.\u003c\/strong\u003e This block ships .003\" undersize at 4.210\". Your machine shop finish-hones it to final bore before ring fit, matched to your ring package.\u003c\/p\u003e\n\n\u003ch3\u003eSupporting parts — read this before ordering\u003c\/h3\u003e\n\u003cp\u003eThis is a \u003cstrong\u003etall-deck build\u003c\/strong\u003e. It requires tall-deck-length intake, pushrods, and matching timing and front-drive components. Standard 9.285\"-deck parts will not fit. If you are moving to a tall deck for the first time, call us and we will walk your boost combination through the supporting parts list so nothing arrives that does not fit.\u003c\/p\u003e\n\n\u003ch3\u003eACE CGI engineering — on every block\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eCompacted graphite iron, 450 MPa minimum tensile strength (GJV-450)\u003c\/li\u003e\n\u003cli\u003e6-bolt 4140 billet steel main caps on all five mains\u003c\/li\u003e\n\u003cli\u003eM14 head stud threads in the deck; 9.5\" studs for roughly 50% more stretch compliance, so clamp load stays stable through a knock event — which matters most on a boosted engine\u003c\/li\u003e\n\u003cli\u003eTrue priority main oil gallery, dedicated lifter secondary circuit, and a straight filter-to-MOG feed with no 90° turns\u003c\/li\u003e\n\u003cli\u003eDry sump feed provision; cast-in -8 ORB oil drain-back ports at the pan rail by cylinders 1 and 2\u003c\/li\u003e\n\u003cli\u003eFully water jacketed — race block strength, street driveable\u003c\/li\u003e\n\u003cli\u003e100% stock mount compatibility, including TRX engine mounts and SUV front differential mounts\u003c\/li\u003e\n\u003cli\u003eSerialized casting, shipped with its CMM report and full casting and machining QC documentation\u003c\/li\u003e\n\u003cli\u003eCast and machined in-house at our Michigan foundry and CNC cell\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eOrdering\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003ePRE-ORDER\u003c\/strong\u003e — reserve your block now. Orders are fulfilled in the sequence received, and we confirm your production slot by email once your order is placed.\u003c\/p\u003e\n\u003cp\u003eFull payment at checkout. Direct from the manufacturer — same price for everyone, no dealer markup, no middlemen. Free shipping within the USA.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNot sure it fits your build?\u003c\/strong\u003e Talk to an ACE engineer before you order: \u003ca href=\"mailto:eric@aceinc.shop\"\u003eeric@aceinc.shop\u003c\/a\u003e · \u003ca href=\"tel:+16159242737\"\u003e(615) 924-2737\u003c\/a\u003e. Confirm your boost combination with us and we will make sure the deck height and supporting parts line up.\u003c\/p\u003e\n\n\u003ch3\u003eNeed a different bore, deck, or cam setup?\u003c\/h3\u003e\n\u003cp\u003eACE BOOST is one fixed configuration. Every other combination — standard deck, splay roller lifters, non-VCT front drives, other bores, factory-honed finishes — is available on our \u003ca href=\"\/products\/gen-iii-hemi-engine-block-cgi\"\u003eBuild Your Own Gen III HEMI CGI Block\u003c\/a\u003e page.\u003c\/p\u003e","brand":"ACE INC","offers":[{"title":"Default Title","offer_id":48333910802690,"sku":"ACE-BLK-BOOST","price":5000.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0797\/8693\/4530\/files\/gen-iii-hemi-engine-block-cgi-purple_8491047d-2f8d-4b55-8936-7e04d2be1cbe.jpg?v=1786706044","url":"https:\/\/aceinc.shop\/products\/ace-boost-gen-iii-hemi-cgi-block","provider":"ACE INC ","version":"1.0","type":"link"}