(1967-74) LS Swap Transmission Crossmember - 4L80/4L85

LS swap 4L60/4L65/4L70/4L75 automatic transmission crossmember Features: -Facilitates installation of a 4L60(multi-piece case only)/4L65/4L70/4L75 GM automatic transmission behind an LS engine in any year 1st-gen F-body & 3rd-gen X-body -Designed using CAD modeling/FEA analysis for optimal fitment, strength, weight, safety and appearance -High-strength low-alloy steel construction -Provides an engineered 3 to 3.5 degree engine/transmission inclination angle that is critical to obtaining suitable U-joint working angles, when installed with Hooker 1st-gen F-Body & X-body LS engine swap brackets -Designed in conjunction with Hooker 1st-gen F-body & X-body LS engine swap brackets to provide bolt-in installation of Hooker LS swap headers and exhaust systems for this application -Will install with either a stock rubber, or Prothane™ 7-1604 poly mount -Provides the highest clearance available for up to 3" exhaust system routing *Integral component of the complete Hooker swap system for this application.Component features unique geometry that is not compatible for use with any other brand of engine mounting components.Direct bolt-in installation on 70-74 subframes;installation on 75-81 subframes requires four horizontal holes to be drilled in subframe sidewall;no hole sawing or vertical drilling required.