The Muscle Rods LSX24 kit is an A-Body LS conversion kit for the 1968-1972 Chevy Chevelle, El Camino, Pontiac GTO and Tempest, Oldsmobile Cutlass and 442, and Buick Skylark. Pick your body style (Hardtop, or Convertible / El Camino) and the transmission behind your LS, since the crossmember differs by type.
What's in the kit
- Two motor mounts and two frame brackets
- Transmission crossmember with two crossmember outer brackets
- Polyurethane transmission mount and spacers
- Installation hardware pack
The frame mounts and outer crossmember brackets bolt into existing holes in the frame.
Transmission options
Order the kit for an LS paired with a Powerglide, TH350 or 4-speed, TH400, T-56 or TR-6060, 4L60E to 4L70E, 4L80E or 4L85E, or 6L80E to 10L90E.
Does my transmission need tunnel work?
- 4L60E, 4L65E, 4L70E, 4L75E and 4L80E: fit the factory tunnel with no modification.
- T-56, TR6060, 6L80E, 6L90E and 8L90E: the tunnel must be cut open and widened, including at the rear, then closed with a fabricated filler panel that is welded or riveted and seam sealed. OEM-type carpet still covers it.
Which oil pan works?
The kit is designed around a high-clearance oil pan (Moroso or cast aluminum), which sits flush with the front crossmember and is required to clear the steering center link tie rod ends. An LH8 pan hangs about 1.5 inches below the crossmember.
Headers, A/C and accessories
- High-mount A/C and alternator brackets are required to clear the frame.
- Headers are designed around a floor shifter. Column shift cars need linkage changes or a cable shifter.
- The starter, valve covers or spark plugs may need to come out to install headers.
- The kit will not work with the factory clutch Z-bar, and driveshaft length may change.
- Designed around factory suspension and steering for lock-to-lock clearance.
Read the 1968-1972 A-Body LS install guide before you order. To add more parts, build your swap in the complete LS swap kit builder.