CFMi - C10 Squarebody LS Swap Combo – HD LS Motor Mounts and Transmission Crossmember

CFM Industries LS Swap Combo for C10 Squarebodies

Simplify your Squarebody LS swap with this HD motor mount and transmission crossmember combo designed specifically for 1973–1987 Chevy and GMC C10 Squarebody trucks. This package combines heavy-duty LS swap motor mounts with a fabricated transmission crossmember built to improve fitment, clearance, and drivetrain support.

Designed around real swap experience, this setup helps position the drivetrain properly while improving radiator fan alignment, firewall clearance, exhaust routing, and overall drivetrain fitment.

What’s Included

• HD LS swap motor mounts with polyurethane bushings
• HD fabricated transmission crossmember
• Crossmember frame mounting hardware

Features and Benefits

• Designed specifically for C10 Squarebody LS swaps
• Positions LS fan properly within factory radiator shroud
• Moves rear of engine forward approximately 1/2 inch for improved firewall and driveshaft clearance
• Transmission crossmember offers multiple adjustment positions
• Designed around 4L60E transmission fitment
• Allows clearance for up to 3-inch exhaust routing beneath crossmember
• Keeps drivetrain tucked above bottom frame line for improved ground clearance
• Upper frame mount design adds strength against frame twist
• Polyurethane bushings improve durability and drivetrain control

Fitment

Designed for 1973–1987 Chevy and GMC C10 Squarebody trucks performing LS engine swaps.

Important Fitment Notes

• Factory low-mount LS A/C compressors must be relocated or removed due to crossmember clearance
• Crossmember designed around LS engine placement and 4L60E transmission combinations
• Additional fitment work may vary depending on swap components used

Installation Details

• Motor mounts use factory frame and engine block mounting hardware
• Includes 9/16-inch motor mount bushing bolts
• Transmission crossmember includes new frame mounting hardware
• Transmission mount hardware reused from factory setup
• Professional installation recommended for drivetrain swaps

Finish

• Ships in raw steel
• Ready for paint or powder coating

Optional Add-On

• Polyurethane transmission mount available

Why This Upgrade Works

This combo package helps eliminate many of the common fitment issues encountered during LS swaps while improving drivetrain positioning, clearance, and frame support. It is designed to make Squarebody LS swaps cleaner, stronger, and easier to package correctly.