1973-77 A-Body LS Conversion
This LS swap kit is made specifically for 1973-1977 Chevelle, Monte Carlo, Laguna, Grand Am, Can Am, Le Mans & Cutlass. It was designed around our High Clearance Oil Pan kit. The frame brackets bolt into existing holes in the frame and was designed to give you the best options for other components. Unlike most LS swap parts on the market this kit replaces the frame brackets in addition to the mounts, so you'll have clean mounting of your engine and not a mix of unrelated parts. Unlike other mounts, ours position the engine so there is no steering interference, and our crossmember maintains the proper drive-line angle for smooth highway cruising. It provides clearance for the factory AC box, power brake booster, and aftermarket suspension components. The following combined parts offer an easy, strong, and clean installation of your LS engine. See our installation guide for more info on this LS swap.
Everything here is made specifically for your car
No generic hope-it-fits parts here. Everything was developed on a real project car for the best possible fit.
301-0002-56 LS and T-56 or TR-6060
301-0002-60 LS and 4L60E to 4L70E
301-0002-80 LS and 4L80E or 4L85E
301-0002-89 LS and 6L80E or 6L90E
Mount and Crossmember Kit
Includes motor mounts, frame brackets, transmission crossmember, transmission mount, and hardware. Manufactured from the highest grade American made steel. They're laser cut, precision bent, powder coated and feature polyurethane bushings. It has a lifetime free replacement warranty on the bushings. $489.00
For those of you working on custom applications we offer our engine mounts separately. To ensure proper driveline angle we recommend getting the Mount and Crossmember kit together for standard LS swaps.
Late Model Manual Transmission Mount Adapters
We have adapter brackets available for those of you using a TR-6060 or late model T-56 transmission used in the CTS-V and 5th generation Camaros. Click here for more info.
Solid Race Bushings
Also available are solid race bushings for our engine mounts.
Oil Pan kit
Our engine mount kit was designed around our High Clearance Oil Pan which ends up flush with the crossmember. Includes pickup tube, hardware, and gasket.
Click here for oil pan install article
BRP Oil Pump Pickup Tube Girdle
Original GM oil pickup tubes are fastened to the pump with a single bolt mating flange on the tube. The bolt hole on the other side is not used. Our Girdle is cnc machined aluminum and goes over the original mating flange, wraps around the tube, and fastens using both bolt holes. Use with a little Locktight and it’s cheap insurance against an engine meltdown. It comes with two longer bolts for install.
MR45786 1 ¾” ceramic coated mid-length headers $569.00
MR45796 1 ¾” ceramic coated long tube headers $699.00
MR45806 1 ¾” stepped to 1 7/8” ceramic coated long tube $849.00
MR45816 1 7/8” ceramic coated long tube headers $799.00
MR45826 1 7/8” stepped to 2” ceramic coated long tube $949.00
MR45836 2” ceramic coated long tube headers $849.00
Muscle Rods Headers
These are not your average swap headers. These headers offer many feature that are normally only on custom race headers. We start with 3/8" laser cut flanges with the tubes welded inside and out and then machined. The mid-length headers use a gasket-less ball and socket type collector for a leak free install. The long tubes feature a slip-fit collector that when used in conjunction with band clamps offer the best ground clearance in the industry. They're ceramic coated inside and out to fight performance robbing underhood temperatures, then polished for a long lasting show quality finish.
We offer several sizes of headers so you can match them to your horsepower level. Our 1¾” mid-length headers support up to 500hp. For more power we offer 1 7/8” long-tubes, and for big cubic inch monster engines our 2" is a perfect match. Our stepped headers offer great high rpm performance while retaining good low and mid-range power. They all include gaskets, bolts, reducers, and O2 sensor bungs.
We have Stainless band clamps and header bolts along with reducer cones to help you complete your exhaust system. Click here for more info.
Coil Relocation Kits and Extreme Race Wires
Muscle Rods Coil Relocation Kits alleviates the problem of the rear coils hitting the power brake booster or air conditioning box when swapping the LS engines into early vehicles. A perfect match to them is our high performance spark plug wires featuring 45° boots. For more info click here.
Wiring Harnesses with Ready to Run Re-flashed Computer
This is the quickest and easiest way to be running and on the road with your LS project. Includes a new wiring harness that has everything you need and a reflashed OE computer. Just plug it in and start enjoying your new LS swap. For more info click here.
LS Conversion Radiators
We now offer conversion radiators specifically designed for your car with an LS engine. They feature all aluminum construction, but unlike others on the market, they have beautifully stamped tanks with strengthening indentations just like your original. They're a double pass design putting the inlet and outlet on the same side which greatly simplifies plumbing to the engine. The all important steam port bung is welded into the upper part of the tank which lets your new LS engine vent properly. They also include a coolant temp fan switch in the tank. Excellent restoration type quality made in the USA. Available in bare aluminum or black and with or without high performance electric fans installed.
313-9034-0M 73-77 A-Body (Manual trans) $570.00
313-9034-0A 73-77 A-Body (Auto trans) $600.00
613-9034-0M 73-77 A-Body (Manual trans) with fans $895.00
613-9034-0A 73-77 A-Body (Auto trans) with fans $925.00
Black Epoxy coating
Optional dual high performance fans installed
DIY In-Tank Pump Fuel Kits
The Aeromotive Phantom Fuel System is a complete kit that gives you everything you need to install a fuel pump and baffle into your existing or original style fuel tank. It comes with fuel pump, hanger assembly, lock ring assembly, baffle with fuel bladder, drill guide, and detailed instructions. You can choose from two different pumps. The 200 Pump capable of supporting up to 550 hp EFI or the 340 Pump capable of up to 800 hp and forced induction. This kit is the best way of supplying your new LS engine with a steady flow of fuel even under spirited driving conditions.
MR18689 200 lph In-Tank Pump Kit $477.33
MR18688 340 lph In-Tank Pump Kit $522.30
Fuel Line and Regulator Kit
Our quick and easy complete fuel line systems includes everything needed to go from the fuel tank to the LS fuel rail. Includes P.T.F.E. braided and covered fuel line, an OE style fuel filter/regulator combo, line clamps, and all fittings and connectors needed. Click for more info.
LS Front Accessory Drives
Whether you are looking for original equipment style, or full billet custom, we have you covered. We have partial and complete kits in several finishes, that have been tested to work with our other components and your car. Hit the link for more info.
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