{"product_id":"yhb-engine-mount-combo-for-small-block-chevy-sbc-bbc-solid-steel-oem-fit-direct-replacement","title":"YHB Engine Mount Combo for Small-Block Chevy (SBC\/BBC) — Solid Steel OEM-Fit Direct Replacement","description":"\u003cp\u003e\u003cstrong\u003eYHB Solid Motor Engine Mount Combo provides a heavy-duty replacement set of two steel motor mounts and two steel chassis pads designed to stop engine movement in high-performance small-block Chevy installations.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eBuilt from thick steel and engineered to fit classic Chevrolet V8 packages, this kit replaces rubber OEM mounts to deliver a firmer, more direct engine-to-frame connection. It’s intended for race, restored, and custom-frame vehicles where minimizing drivetrain play improves throttle response and prevents linkage bind. The set is sized for common small-block Chevrolet families and includes chassis pad geometry to bolt directly into many vintage frames without modification.\u003c\/p\u003e\n\n\u003ch3\u003eHow do these solid mounts change engine behavior under load?\u003c\/h3\u003e\n\u003cp\u003eSolid-steel mounts eliminate the cushioning and flex of rubber, reducing engine movement when torque spikes occur. That results in less drivetrain lash, fewer alignment shifts, and a more consistent connection between engine and transmission during hard launches or track use.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eRemoves excessive fore\/aft and roll movement found in soft mounts\u003c\/li\u003e\n  \u003cli\u003ePrevents throttle linkage and shift linkage from binding under torque\u003c\/li\u003e\n  \u003cli\u003eImproves repeatable power delivery and pedal feel in performance driving\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill this kit fit my Chevy, and which engine\/transmission combinations are covered?\u003c\/h3\u003e\n\u003cp\u003eThe motor mounts in this combo are dimensioned to replace GM OEM part number 3990914 and suit most small-block Chevy installations from the late 1950s through early 1970s. The chassis pads match common mounting locations used across multiple Chevrolet models through the 1970s and 1980s.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eMotor mount ear spacing: 2½\" inside measurement, 1-11\/16\" from rear face to bolt center\u003c\/li\u003e\n  \u003cli\u003eChassis pad mount centers: 2-5\/16\" x 5-1\/16\", center height 2\", bolt center 1\" from frame surface\u003c\/li\u003e\n  \u003cli\u003eDirect replacement fitment for many Camaro, Firebird, Chevelle, Malibu, Nova, Impala, Caprice, Monte Carlo, and El Camino applications\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow are these parts installed and when should I expect to need additional modifications?\u003c\/h3\u003e\n\u003cp\u003eInstallation follows conventional motor and frame mounting procedures: raise and support the engine, remove the stock mounts, then bolt the YHB steel pieces into place. In most OEM-frame applications these are direct replacements, but custom chassis or modified motor locations may require minor alignment checks or shims.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eBolts to existing mount points using OE-style hardware (verify torque specs)\u003c\/li\u003e\n  \u003cli\u003eTypically no frame cutting or welding required for listed vehicle fits\u003c\/li\u003e\n  \u003cli\u003eCustom builds may need spacing shims or adapter plates for nonstandard motor positions\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat are the trade-offs of switching from rubber to solid mounts?\u003c\/h3\u003e\n\u003cp\u003eSolid mounts greatly reduce engine movement but transfer more vibration and noise to the chassis. They’re favored in competition and rigid custom frames, while street-driven vehicles seeking comfort may prefer polyurethane or OEM rubber for smoother NVH (noise, vibration, harshness) characteristics.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eHigher vibration and noise transmitted into the cabin compared with rubber\u003c\/li\u003e\n  \u003cli\u003eSuperior stability and repeatable alignment for performance use\u003c\/li\u003e\n  \u003cli\u003eLong-lasting steel construction resists compression and deterioration\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: This YHB solid motor mount combo is intended for builders, restorers, and racers who need a durable, no-flex engine mounting solution for small-block Chevrolet engines. Choose this set when you prioritize drivetrain stability, precise linkage behavior, and robust welded-steel components for vintage Chevy models or custom chassis projects.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Does this kit replace GM part number 3990914?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. The motor mounts are made to replace GM OEM part #3990914 for most small-block Chevys.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Will these mounts fit my Camaro or Chevelle?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: They fit many Camaro, Firebird, Chevelle, Malibu, Nova, Impala, Caprice, Monte Carlo, and El Camino models listed in the fitment range.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"YHB","offers":[{"title":"Default Title","offer_id":55167251611991,"sku":"B09VGPLC8S","price":64.81,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1050\/1524\/7191\/files\/yhb-solid-motor-mount-front-view.jpg?v=1790380221","url":"https:\/\/britishgarage.co.uk\/products\/yhb-engine-mount-combo-for-small-block-chevy-sbc-bbc-solid-steel-oem-fit-direct-replacement","provider":"British Garage","version":"1.0","type":"link"}