This x body LS swap kit mounts an LS engine and transmission in a 1968-1974 Chevy Nova or Pontiac Ventura. Order the Muscle Rods LSX14 kit for an LS paired with a T-56 or TR-6060, 4L60E to 4L70E, 4L80E or 4L85E, 6L80E to 10L90E, TH400, or Powerglide, TH350 or 4-speed.
What's in the kit
- Driver and passenger motor mounts
- Driver and passenger frame mounts
- Transmission crossmember with two crossmember brackets
- Polyurethane transmission mount
- Transmission mount spacers, quantity set by your transmission
- Installation hardware pack
The frame mounts and transmission crossmember bolt into the factory mounting holes. No drilling or modifications are required. The kit is designed around factory suspension and steering parts.
Transmission options
Pick the option that matches your transmission: T-56 or TR-6060, 4L60E to 4L70E, 4L80E or 4L85E, 6L80E to 10L90E, TH400, or Powerglide, TH350 or 4-speed. The factory clutch Z-bar will not work with the kit, and driveshaft length will change from the original.
Which oil pan works?
The kit and headers for these cars are designed for the GM LH8 oil pan. The BRP machined oil pan kit is for engines with variable valve timing or displacement on demand.
Headers, A/C and accessories
- To run A/C, use a top mount A/C bracket.
- Muscle Rods headers clear the factory A/C box, power steering box and power brakes.
- With a 4L80 and the mid-length headers, trim the bell housing tabs for header clearance.
- Some header installs need the starter, valve covers or spark plugs removed.
- Headers are designed around a floor shifter. Column shift linkage needs modification.
The kit is made in the USA. Read the 1968-1974 X-Body LS install guide for the parts list and install steps, or add headers, a fuel tank and more in the complete LS swap kit builder.