LS Conversion Specialists

LS engine swap kits for 1955 to 2003 cars and trucks

1973-1987 4wd GM Trucks LS Conversion

This LS swap kit is for 1973-1987 GM ½ ton and 3/4 ton 4wd trucks and 1973-1991 4wd SUV. It was designed around our GM LH8 and High Clearance Oil Pan kits. The frame brackets bolt into existing holes in the frame and was designed to give you the best options for other components. Unlike other mounts, ours position the engine so there is no steering interference, and 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 Truck

No generic hope-it-fits parts here. Everything was developed on a real project truck for the best possible fit.

1973-87 GM Truck 4wd

Engine Mount and Frame bracket kit

Includes motor mounts, frame brackets, and hardware.  Manufactured from the highest grade American made steel. They're laser cut, precision bent, powder coated and feature polyurethane bushings.  Bolts into existing holes in the frame. Comes with a lifetime free replacement warranty on the bushings.                                                             $299.00

Oil Pan kits

The LH8 pan is the oil pan that our LS swap was designed around. It comes standard or machined for the oil bypass valve to use with displacement on demand or variable valve timing. Includes new full length windage tray, pickup tube, hardware, gasket, dipstick, and our pickup tube girdle. We also offer our High Clearance oil pan. Built to our specs by Moroso this High Clearance oil pan is perfect for people looking for more ground clearance.

Click here for oil pan install article


000-6100-00      LH8 Oil Pan                                                                    $249.00


000-6102-00      LH8 Oil Pan (machined for ‘08 up VVT bypass)             $329.00


000-6400-00      Moroso High Clearance Oil Pan                                     $469.00

Oil pan kits come with our exclusive pickup tube girdle.

Our High Clearance oil pan will be flush or above the frame and the LH8 will fit like a vintage small or big block and hang a little below.

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.


000-6000-00      Girdle with hardware                                                      $34.95


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. They use a gasket-less ball and socket type collector for a leak free install. They're ceramic coated inside and out to fight performance robbing underhood temperatures then polished for a long lasting show quality finish. They have 1 ¾” primaries that support over 500 hp and offer great ground clearance with their mid-length. They include gaskets, bolts, reducers, and O2 sensor bungs.


MR45666      1 ¾” ceramic coated mid-length headers                           $569.00

Exhaust Accessories

We have Stainless band clamps and header bolts along with reducer cones to help you complete your exhaust system. Click here for more info.


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 truck 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 as well as a billet radiator cap. Excellent restoration type quality made in the USA. Available in bare aluminum or black and with or without high performance electric fans installed. We offer both the standard 18" tall radiator as well as the 21" radiator that came with trucks equipped with Heavy Duty Cooling. Please measure your original before ordering.


313-9018-0M        67-87 GM Truck LS Radiator (Manual Trans)                       $620.00


313-9018-0A         67-87 GM Truck LS Radiator (Auto Trans)                           $650.00


613-9018-0M        67-87 GM Truck LS Radiator (Manual Trans) with fans        $945.00


613-9018-0A         67-87 GM Truck LS Radiator (Auto Trans) with fans            $975.00


21" Radiators for trucks with Heavy Duty Cooling

313-9019-0M        67-87 GM Truck LS Radiator 21" (Manual Trans)                 $620.00


313-9019-0A         67-87 GM Truck LS Radiator 21" (Auto Trans)                     $650.00


613-9019-0M        67-87 GM Truck LS Radiator 21" (Manual Trans) with fans  $945.00


613-9019-0A         67-87 GM Truck LS Radiator 21" (Auto Trans) with fans      $975.00

Black Epoxy coating

Optional dual high performance fans installed

EFI In-Tank Pump Fuel Tanks kits

These conversion fuel tanks solve the problem of supplying your new LS engine with a steady flow of fuel. The tanks, made specifically for your truck, feature a recessed area in the top for the fuel pump module and sending unit, so no floor modifications are needed for clearance. They have an innovative baffling system inside to control fuel slosh and keep the pump fed even at low fuel levels and extreme driving conditions. The kit includes a fuel sending unit designed to work with your factory style fuel gauge. The included fuel pump module features an in-tank wiring harness and three ports - one for the feed line, one for the return line, and one for the vent. The kit has two available Walbro fuel pump options. The standard 255 LPH pump or the 340 LPH pump for supercharged or 550+hp applications. The kit also includes gaskets, and hardware. They look like original equipment from under the truck and are absolutely the best way to go when converting to EFI.

220-6680-04       73-87 Truck with 6' bed Fuel Tank kit - 255 LPH pump       $599.00


220-6680-06       73-87 Truck with 6' bed Fuel Tank kit - 340 LPH pump       $669.00


220-6681-04       73-87 Truck with 8' bed Fuel Tank kit - 255 LPH pump       $599.00


220-6681-06       73-87 Truck with 8' bed Fuel Tank kit - 340 LPH pump       $669.00

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 truck. Hit the link for more info.

LS Engine and MuscleRods T-Shirts

Check out our Apparel Section for the latest in LS Engine and MuscleRods gear.


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