MuscleRods LS Engine Swap Kit for 1970-1981 Camaro/Firebird F-Body
When dropping an LS motor into a 1970 through 1981 F Body chassis this 1970 through 1981 F Body LS Conversion Kit keeps crank and driveshaft centerlines exactly in line to stop unwanted vibrations. Engine mounts and a TIG welded crossmember work together to preserve factory tilt and allow the use of the stock oil pan without sump alterations. It supports popular transmissions from T56 to 4L80E without modifying the tunnel while ensuring a leak-resistant joint. Designed by MuscleRods in the USA this complete engine swap kit includes all brackets and hardware for a clean installation.
Precision alignment for LS engine driveline
The custom bracket geometry paired with a TIG welded crossmember holds the LS crankshaft and driveshaft in perfect factory tilt, preventing misalignment that can introduce driveline vibrations. By preserving the original chassis angle, the system reduces torsional stress on universal joints and transmission input shafts, which in turn safeguards couplings from premature wear. Support for popular transmissions such as T56, 4L60E and 4L80E is built in, so there is no need for tunnel modifications or trial fitting. This exacting alignment approach maintains throttle response and ensures that each installation delivers consistent results across all 1970–1981 F-Body models. Installers benefit from a fitment that works right out of the box, eliminating guesswork during assembly.
Seamless fit with factory oil pan assembly
A precision adapter plate matches the F-Body oil pan bolt pattern and sealing surface, allowing you to reuse the stock pan without any sump alterations. Maintaining the original oil pickup geometry ensures reliable lubrication of Gen III and Gen IV LS engines, from LS1 to LS3 and everything in between. With no aftermarket sump to alter, there is less risk of seal failure or leaks over time, and routine service remains straightforward. Underhood clearance stays intact, leaving popular intake manifold and hood configurations unaffected. This approach yields a clean, leak resistant installation that blends classic styling with modern engine performance.
Durable polyurethane transmission mount design
The included transmission mount uses polyurethane to resist heat, oil and road chemicals that can degrade rubber isolators. Unlike traditional mounts, polyurethane retains its stiffness under varying loads to control engine movement and isolate torsional pulses, delivering a more refined driving experience with reduced cabin noise. Custom spacers are provided for each compatible transmission to ensure correct mount height and angle, so you maintain proper powertrain geometry through every service interval. This material choice prevents bracket fatigue and helps preserve structural integrity over time. The result is a noticeable reduction in vibration without sacrificing comfort or durability.
Count on MuscleRods for precise alignment and lasting performance. For a more robust solution that lets you customize parts to suit your needs see our Complete LS Swap Kits - LS Kit Builder.