{"product_id":"umi3108-r-78-88-gm-g-body-modular-transmission-crossmember","title":"UMI Performance 78-88 GM G-Body Modular Adjustable Transmission Crossmember - Red","description":"\u003ch4\u003eDial In Your Driveline Angle Without Cutting a Single Weld\u003c\/h4\u003e\n\u003cp\u003eSwapping a transmission in a 1978 to 1988 GM G-Body means fighting the factory crossmember every time the driveline geometry changes. The UMI3108-R Modular Adjustable Transmission Crossmember replaces that fixed mount with a 5 position CNC billet aluminum system that bolts into the stock subframe holes, so you can correct pinion angle and transmission height on the bench instead of under the car.\u003c\/p\u003e\n\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eLaser cut tab and slot design for a lightweight, high strength mounting plate\u003c\/li\u003e\n\u003cli\u003e5 position CNC machined billet aluminum transmission mount for precise height adjustment\u003c\/li\u003e\n\u003cli\u003eCNC machined billet aluminum spacer included for 1978 to 1981 frames\u003c\/li\u003e\n\u003cli\u003eLarge cutouts for oversized dual exhaust systems, no exhaust clearance modifications needed\u003c\/li\u003e\n\u003cli\u003eConfirmed compatible with TKO, TKX, 200R4, 700R4, TH350, TH400, T56, 4L60, 4L65, 4L80 and 6L80 transmissions\u003c\/li\u003e\n\u003cli\u003e100 percent bolt in installation using factory subframe mounting holes\u003c\/li\u003e\n\u003cli\u003eDurable Tiger Dry Lac powder coat finish in red\u003c\/li\u003e\n\u003cli\u003eDesigned and manufactured in the USA from North American raw materials\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eFitment Table\u003c\/h4\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eYear Range\u003c\/th\u003e\n\u003cth\u003eMake\u003c\/th\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1978-1987\u003c\/td\u003e\n\u003ctd\u003eBuick\u003c\/td\u003e\n\u003ctd\u003eRegal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1978-1987\u003c\/td\u003e\n\u003ctd\u003eChevrolet\u003c\/td\u003e\n\u003ctd\u003eEl Camino\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1978-1983\u003c\/td\u003e\n\u003ctd\u003eChevrolet\u003c\/td\u003e\n\u003ctd\u003eMalibu\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1978-1988\u003c\/td\u003e\n\u003ctd\u003eChevrolet\u003c\/td\u003e\n\u003ctd\u003eMonte Carlo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1978-1987\u003c\/td\u003e\n\u003ctd\u003eGMC\u003c\/td\u003e\n\u003ctd\u003eCaballero\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1981-1988\u003c\/td\u003e\n\u003ctd\u003eOldsmobile\u003c\/td\u003e\n\u003ctd\u003eCutlass\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1982-1986\u003c\/td\u003e\n\u003ctd\u003ePontiac\u003c\/td\u003e\n\u003ctd\u003eBonneville\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1978-1987\u003c\/td\u003e\n\u003ctd\u003ePontiac\u003c\/td\u003e\n\u003ctd\u003eGrand Prix\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch4\u003eSpecifications\u003c\/h4\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eDetail\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMPN\u003c\/td\u003e\n\u003ctd\u003eUMI3108-R\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUPC\u003c\/td\u003e\n\u003ctd\u003eNot assigned by manufacturer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eUMI Performance\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eColor\u003c\/td\u003e\n\u003ctd\u003eRed powder coat\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTotal Brace Weight\u003c\/td\u003e\n\u003ctd\u003e22 lbs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eCNC machined billet aluminum, laser cut steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAdjustment Positions\u003c\/td\u003e\n\u003ctd\u003e5 position transmission mount\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTransmission Compatibility\u003c\/td\u003e\n\u003ctd\u003eTKO, TKX, 200R4, 700R4, TH350, TH400, T56, 4L60, 4L65, 4L80, 6L80\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNot Compatible With\u003c\/td\u003e\n\u003ctd\u003eTR6060\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCountry of Origin\u003c\/td\u003e\n\u003ctd\u003eUnited States\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch4\u003eWhat's Included\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eUMI3108-R modular transmission crossmember assembly\u003c\/li\u003e\n\u003cli\u003eCNC machined billet aluminum transmission mount\u003c\/li\u003e\n\u003cli\u003eCNC machined billet aluminum spacer for 1978 to 1981 frames\u003c\/li\u003e\n\u003cli\u003eHigh grade mounting hardware\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eAbout UMI Performance\u003c\/h4\u003e\n\u003cp\u003eUMI Performance designs and manufactures chassis, suspension and driveline components for GM muscle cars entirely in the United States. Every part is engineered by racers who use their own track and street experience to solve real fitment and handling problems, then built from North American raw materials with precision welds and laser cut components for a durable, repeatable fit.\u003c\/p\u003e\n\n\u003ch4\u003eRelated Parts on Our Site\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/umi-performance-68-72-gm-a-body-tubular-upper-lower-control-arms\"\u003eUMI Performance 68-72 GM A-Body Tubular Upper \u0026amp; Lower Control Arms\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/umi-performance-82-92-gm-f-body-boxed-style-weld-in-subframe-connectors\"\u003eUMI Performance 82-92 GM F-Body Boxed Style Weld-In Subframe Connectors\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eFAQ\u003c\/h4\u003e\n\u003cstrong\u003eWhat is the UMI3108-R?\u003c\/strong\u003e\n\u003cp\u003eThe UMI3108-R is a modular, 5 position adjustable transmission crossmember for 1978 to 1988 GM G-Body vehicles, finished in red powder coat. It bolts into the factory subframe holes and lets you fine tune transmission height and driveline angle for a wide range of automatic and manual transmissions.\u003c\/p\u003e\n\n\u003cstrong\u003eDoes the UMI3108-R require any drilling or cutting?\u003c\/strong\u003e\n\u003cp\u003eNo. It bolts directly into the existing factory subframe mounting holes on all 1978 to 1988 G-Body frames, so no drilling, cutting or welding is required for installation.\u003c\/p\u003e\n\n\u003cstrong\u003eWill this crossmember clear a large diameter dual exhaust?\u003c\/strong\u003e\n\u003cp\u003eYes. The brace design includes large cutouts specifically sized to provide clearance for oversized dual exhaust systems.\u003c\/p\u003e\n\n\u003cstrong\u003eWhat transmissions work with the UMI3108-R?\u003c\/strong\u003e\n\u003cp\u003eIt is confirmed to work with TKO, TKX, 200R4, 700R4, TH350, TH400, T56, 4L60, 4L65, 4L80 and 6L80 transmissions. It is not compatible with the TR6060.\u003c\/p\u003e\n\n\u003cstrong\u003eDo I need the aluminum spacer for my car?\u003c\/strong\u003e\n\u003cp\u003eThe CNC machined billet aluminum spacer is only required on 1978 to 1981 G-Body frames and is included in the box for those applications.\u003c\/p\u003e\n\n\u003cstrong\u003eWhich transmission mount should I order?\u003c\/strong\u003e\n\u003cp\u003eMost applications use the shorter 3.1158 mount. A taller 3.1108 mount is available if needed. If you are unsure, install the shorter mount first and measure before ordering the taller option.\u003c\/p\u003e\n\n\u003cstrong\u003eIs the UMI3108-R adjustable after installation?\u003c\/strong\u003e\n\u003cp\u003eYes. The laser cut tab and slot design combined with the 5 position billet aluminum mount allows you to adjust driveline angle and transmission height even after the crossmember is bolted in.\u003c\/p\u003e\n\n\u003cstrong\u003eWhat vehicles use this crossmember?\u003c\/strong\u003e\n\u003cp\u003eThis crossmember fits the 1978 to 1988 Buick Regal, Chevrolet El Camino, Chevrolet Malibu, Chevrolet Monte Carlo, GMC Caballero, Oldsmobile Cutlass, Pontiac Bonneville and Pontiac Grand Prix, based on the exact year ranges shown in the fitment table above.\u003c\/p\u003e\n\n\u003ch4\u003eInstall Instructions\u003c\/h4\u003e\n\u003col\u003e\n\u003cli\u003eSupport the transmission with a suitable transmission jack before removing the factory crossmember.\u003c\/li\u003e\n\u003cli\u003eRemove the factory transmission crossmember from the subframe mounting holes.\u003c\/li\u003e\n\u003cli\u003ePosition the UMI3108-R modular crossmember into the existing factory subframe holes and loosely install the mounting hardware.\u003c\/li\u003e\n\u003cli\u003eInstall the CNC machined billet aluminum spacer if your vehicle is a 1978 to 1981 model.\u003c\/li\u003e\n\u003cli\u003eAttach the billet aluminum transmission mount at the appropriate one of the 5 adjustment positions for your transmission and desired driveline angle.\u003c\/li\u003e\n\u003cli\u003eRaise the transmission into place on the new mount and torque all mounting hardware to manufacturer specification.\u003c\/li\u003e\n\u003cli\u003eVerify exhaust clearance and driveline angle, then make final adjustments as needed before lowering the vehicle.\u003c\/li\u003e\n\u003c\/ol\u003e\n","brand":"UMI Performance","offers":[{"title":"Default Title","offer_id":46195443204175,"sku":"UMI3108-R","price":331.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1062\/7920\/files\/umi-crossmember-1_fa9247cc-0f87-4c92-b22b-8c8e245013aa.webp?v=1785079646","url":"https:\/\/www.blackopsautoworks.com\/products\/umi3108-r-78-88-gm-g-body-modular-transmission-crossmember","provider":"Black Ops Auto Works","version":"1.0","type":"link"}