{"product_id":"1970-81-pontiac-firebird-heidts-pro-touring-subframe-front-suspension","title":"1970-81 Pontiac Firebird Heidts Pro Touring Subframe Front Suspension","description":"\u003ch3 data-path-to-node=\"1\"\u003eMaximum Handling for Second-Gen F-Bodies\u003c\/h3\u003e\n\u003cp data-path-to-node=\"2\"\u003eThe \u003cb data-path-to-node=\"2\" data-index-in-node=\"4\"\u003eHeidts Pro-G® Full Front Subframe\u003c\/b\u003e for the 1970–1981 Pontiac Firebird is a comprehensive performance foundation designed to bring modern supercar handling to the Second-Gen F-Body. This all-new bolt-in subframe is engineered for extreme performance, offering the clearance necessary for massive front tires and the versatility to mount nearly any Chevrolet powerplant.\u003c\/p\u003e\n\u003ch3 data-path-to-node=\"3\"\u003eEngineering and Performance\u003c\/h3\u003e\n\u003cul data-path-to-node=\"4\"\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"4,0,0\"\u003e\u003cb data-path-to-node=\"4,0,0\" data-index-in-node=\"0\"\u003eExtreme Tire Clearance:\u003c\/b\u003e This subframe is specifically designed to accommodate up to a \u003cb data-path-to-node=\"4,0,0\" data-index-in-node=\"86\"\u003e335mm wide front tire\u003c\/b\u003e, allowing for a massive contact patch that significantly increases front-end grip.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"4,1,0\"\u003e\u003cb data-path-to-node=\"4,1,0\" data-index-in-node=\"0\"\u003eModern Geometry:\u003c\/b\u003e Features Heidts' Pro-G™ drop spindles and advanced suspension geometry. This setup lowers the center of gravity while optimizing the camber curve and roll center for high-speed cornering and precise turn-in.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"4,2,0\"\u003e\u003cb data-path-to-node=\"4,2,0\" data-index-in-node=\"0\"\u003eEngine Versatility:\u003c\/b\u003e The subframe is designed to accept a wide range of engines, including \u003cb data-path-to-node=\"4,2,0\" data-index-in-node=\"90\"\u003eSmall Block, Big Block, LS, and LT\u003c\/b\u003e platforms. It includes a universal transmission crossmember to simplify drivetrain installation.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"4,3,0\"\u003e\u003cb data-path-to-node=\"4,3,0\" data-index-in-node=\"0\"\u003ePrecision Steering:\u003c\/b\u003e Standardized with a \u003cb data-path-to-node=\"4,3,0\" data-index-in-node=\"40\"\u003epower rack and pinion\u003c\/b\u003e, this system replaces the heavy factory steering box with a direct-linkage setup that provides immediate and accurate feedback.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-path-to-node=\"5\"\u003eConstruction and Features\u003c\/h3\u003e\n\u003cul data-path-to-node=\"6\"\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"6,0,0\"\u003e\u003cb data-path-to-node=\"6,0,0\" data-index-in-node=\"0\"\u003eAdvanced Control Arms:\u003c\/b\u003e The kit includes \u003cb data-path-to-node=\"6,0,0\" data-index-in-node=\"40\"\u003eadjustable upper control arms\u003c\/b\u003e for fine-tuning alignment and heavy-duty \u003cb data-path-to-node=\"6,0,0\" data-index-in-node=\"111\"\u003e1-1\/2-inch tubular lower control arms\u003c\/b\u003e for maximum strength and reduced deflection.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"6,1,0\"\u003e\u003cb data-path-to-node=\"6,1,0\" data-index-in-node=\"0\"\u003eAdjustable Dampening:\u003c\/b\u003e Comes standard with \u003cb data-path-to-node=\"6,1,0\" data-index-in-node=\"42\"\u003eadjustable billet coil-over shocks and springs\u003c\/b\u003e, giving the builder full control over ride height and valving stiffness.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"6,2,0\"\u003e\u003cb data-path-to-node=\"6,2,0\" data-index-in-node=\"0\"\u003eBraking Performance:\u003c\/b\u003e Standard equipment features an \u003cb data-path-to-node=\"6,2,0\" data-index-in-node=\"52\"\u003e11-inch Wilwood disc brake kit\u003c\/b\u003e with 4-piston calipers, providing a major increase in stopping power over factory components.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-path-to-node=\"7\"\u003eKit Includes:\u003c\/h3\u003e\n\u003cul data-path-to-node=\"8\"\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"8,0,0\"\u003e\u003cb data-path-to-node=\"8,0,0\" data-index-in-node=\"0\"\u003eMain Subframe:\u003c\/b\u003e All-new bolt-in performance front subframe.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"8,1,0\"\u003e\u003cb data-path-to-node=\"8,1,0\" data-index-in-node=\"0\"\u003eControl Arms:\u003c\/b\u003e Adjustable upper and 1-1\/2\" lower tubular arms.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"8,2,0\"\u003e\u003cb data-path-to-node=\"8,2,0\" data-index-in-node=\"0\"\u003eSpindles:\u003c\/b\u003e Pro-G™ dropped spindles for an aggressive stance.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"8,3,0\"\u003e\u003cb data-path-to-node=\"8,3,0\" data-index-in-node=\"0\"\u003eSteering:\u003c\/b\u003e Power rack and pinion unit.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"8,4,0\"\u003e\u003cb data-path-to-node=\"8,4,0\" data-index-in-node=\"0\"\u003eSuspension:\u003c\/b\u003e Billet adjustable coil-over shocks and springs.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"8,5,0\"\u003e\u003cb data-path-to-node=\"8,5,0\" data-index-in-node=\"0\"\u003eBrakes:\u003c\/b\u003e 11\" Wilwood disc brakes with 4-piston calipers.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"8,6,0\"\u003e\u003cb data-path-to-node=\"8,6,0\" data-index-in-node=\"0\"\u003eDrivetrain:\u003c\/b\u003e Universal transmission crossmember.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-path-to-node=\"9\"\u003eAvailable Performance Upgrades:\u003c\/h3\u003e\n\u003cul data-path-to-node=\"10\"\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"10,0,0\"\u003e\u003cb data-path-to-node=\"10,0,0\" data-index-in-node=\"0\"\u003eHeim Joint Rod Ends:\u003c\/b\u003e Upgrade the upper control arm bushings to \u003cb data-path-to-node=\"10,0,0\" data-index-in-node=\"63\"\u003eheim joints\u003c\/b\u003e to eliminate deflection and further tighten suspension response.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"10,1,0\"\u003e\u003cb data-path-to-node=\"10,1,0\" data-index-in-node=\"0\"\u003eBrake Upgrades:\u003c\/b\u003e For heavy track use, upgrade to \u003cb data-path-to-node=\"10,1,0\" data-index-in-node=\"48\"\u003e12-inch or 13-inch Wilwood rotors\u003c\/b\u003e with drilled and slotted configurations.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"10,2,0\"\u003e\u003cb data-path-to-node=\"10,2,0\" data-index-in-node=\"0\"\u003eStabilization:\u003c\/b\u003e Add the \u003cb data-path-to-node=\"10,2,0\" data-index-in-node=\"23\"\u003e1-1\/4-inch solid splined sway bar\u003c\/b\u003e for maximum body roll control during high-lateral-G maneuvers.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Heidt's Hot Rod Shop","offers":[{"title":"Default Title","offer_id":51513983697028,"sku":"HEI CF-203","price":8224.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0286\/1180\/5316\/files\/CF-112.webp?v=1770157005","url":"https:\/\/hotrodhardware.com\/products\/1970-81-pontiac-firebird-heidts-pro-touring-subframe-front-suspension","provider":"Hot Rod Hardware","version":"1.0","type":"link"}