LS Swap 31 Inch Double Pass Radiator w/Dual Electric Fans/Oil Pan

If you've decided to add modern power to your ride using an LS series engine, this LS Swap Radiator Kit is the perfect way to protect your investment and ensure proper cooling system function.

We wanted to offer a solution for the budget-minded builder that also kept aesthetics in mind. Instead of an inline hose adapter with an NPT bung for you to plumb in your own fittings, which can look like junkyard parts hacked together and is susceptible to leaks, we created a unique LS Steam Vent Radiator Hose Adapter. This adapter makes quick work of several LS swap radiator hose issues with one simple piece. It features one 1.25" end to match the water pump outlet, one 1.5" end to match the upper radiator inlet, an integrated streamlined 1/4" 90° hose barb fitting for the steam line, and a black finish to blend in with radiator hoses. The combination of this adapter with one of our professional-quality aluminum racing radiators means your search for an affordable and effective LS conversion radiator solution is over.

LS Steam Vent Radiator Hose Adapter Features

• 1.25" end - matches water pump outlet size
• 1.50" end - matches upper radiator inlet size
• Integrated 1/4" 90° hose barb fitting for a streamlined look
• Black finish blends in with radiator hoses

This LS1 Swap Radiator Kit features our double-pass universal aluminum radiator. These high-performance radiators feature 100% all-aluminum construction. The furnace-brazed core increases durability compared to other radiators with epoxy-glued or crimped-gasket sealing methods. Two rows of 1-inch aluminum tubes allow this radiator to out-cool a similarly sized radiator with five rows of copper tubes. A rugged billet aluminum filler neck with screw-in bleed is also included.

This radiator is designed for Chevy applications with both water necks on the passenger side.

Universal Aluminum Radiator Features:

• Passenger side upper inlet, 1.50"
• Passenger side lower outlet, 1.75"
• All-aluminum, furnace-brazed construction
• No cheap epoxy glue or crimped in gaskets
• Maximum amount of fins per inch allows greater heat transfer
• Two rows of 1" aluminum tubes (out-cools five rows of copper)
• Billet filler necks

Unlike the older SBC or BBC, the LS engine family features a thermostat that is located in the water pump housing. While this design allows for temperature and flow to be regulated before the coolant enters your engine, having the thermostat at a low point means that any air in the cooling system can easily get trapped in your engine. Air bubbles in cooling passages disrupt coolant flow, create hot-spots, and can cause overheating issues, pre-ignition, and detonation. None of these are things that your new (or used) LS will stand up to for very long without damage. Fortunately, there are steam ports in the heads that allow this trapped air to flow away from critical cooling locations to a high point outside of the cylinder heads. Since these engines utilize a closed pressurized cooling system, the steam tubes must be connected back into it at some point. Stock radiators in vehicles produced with LS engines feature a port to connect the steam lines to, and a direct-fit LS swap radiator with steam port provision is likely available for your ride - at a high price tag. Our kit allows you to spend less of your hard-earned cash on a cooling solution without sacrificing appearance under the hood.

Learn more about how radiators work and selecting the proper radiator for your vehicle by reading our tech article, Radiator Cooling Performance.

If your application does not require additional cooling efficiency of a double-pass radiator, we offer 91604056 which features a single pass radiator.

Round Chrome Radiator Pressure Cap, 15 Lbs:

• Pressure caps for radiators featuring 15-pound capacity
• Chrome finish
• 2-3/8" O.D. of cap top
• 2-1/4" I.D. of cap top
• Will fit a standard radiator neck
• Sealing surface (which sits inside the neck) is 1-1/2" O.D.
• Cap sides are 7/16" tall
• While this cap is chrome plated for durability, it may not meet standards of a premium, "show" quality finish

Aluminum Fan Shroud for 31 Inch Radiator, Dual Electric Fans

• Designed to concentrate airflow to your cooling fan
• Composed of high-quality aluminum, it is lightweight and easy to drill through for a custom fit
• Comes complete with rubber flaps for higher speeds when airflow through the grille increases
• Instruction sheet
• Bolt-on installation
• Shroud made of 16 gauge aluminum
• Fits dual 11" or 12" fans
• 8 rubber flaps
• Measures 18-3/4" tall x 25-3/4" wide x 1/2"deep

Speedway Universal Electric Radiator Cooling Fan, 12 Inch

• Speedway Motors universal fans provide efficient airflow
• Computer-balanced blades, heavy-duty one-piece construction, and a complete mounting kit included
• Provides the cooling power you need with reduced noise and vibration
• Reversible, so they can be configured as pushers or pullers
• 12 inch diameter
• 2-3/8 inch wide
• S-blade style
• 10 blades
• 750 CFM maximum airflow
• 2 fans included

Fan/Shroud/Cooler Mounting Kit

• Consists of 4 threaded plastic bolts 3/16" diameter and approx. 8-1/2" long
• Includes 4 1/4" spacers, 8 thin washers, and 4 metal wingnuts
• Works great for mounting your fan shroud, electric fan, or oil cooler directly to your radiator
• 2 mounting kits included

LS Swap Conversion Low Profile Oil Pan Kit, OEM Filter, Zinc

• Fits a wide variety of 1960s-1980s RWD GM vehicles with rear sump oil pans
• Designed for Gen III and Gen IV LS wet sump applications
• Sump is 6 inches deep for increased ground clearance
• Pan depth at front half of pan is 1 5/8-inch for increased K-member/steering clearance
• 21-inch length overall with the sump 10-inches long
• 10 1/4-inches wide at sump kickouts
• Swap pan holds 7 quarts of oil for extended high rpm use
• Truck windage trays can be used with mild modification
• Fits stroker kits up to 4.125-inch stroke with OE connecting rod design 
• Perfect swap pan for 4.8L, 5.3L, or 6.0L Vortec LS truck engines being installed into cars to increase ground clearance
• Anti-slosh baffles with four trap doors ensures oil is always around the pickup during acceleration and braking
• Billet oil filter mount with 1/4-inch NPT port included, simplifying your LS swap
• Pickup tube 9101745 and oil pan gasket 91017451is included
• Kit features dipstick assembly and correct AC Delco oil filter for complete solution

Make Your LS Swap Happen Without the Hassle

There is no denying the appeal of the LS swap. GM’s LS family of engines is compact, lightweight, and makes great power. They are plentiful and cheap, and can be found in every RWD application GM has offered since the late ’90s, including performance cars like the Camaro, Corvette, GTO, and G8, and vans, SUVs, and trucks like the Trailblazer, SSR, and Silverado. Furthermore, the aftermarket has embraced the engine family, making an LS swap literally a weekend affair with such LS swap kit bits as engine mounts, headers, cooling system pieces, and more. Perhaps the most popular LS engine is the 5.3L truck offering, as they are the epitome of cheap and plentiful. Most are iron block, though there are aluminum block variants found in certain applications. When swapping most any LS engine you will more than likely need to update the oil pan for proper fitment into the chassis you are swapping into, but especially so with LS truck engines and their deeper oil pans. Our steel LS swap oil pan kit is the perfect solution to your LS swap fitment needs, whether you need an LS3 low-profile oil pan, LS7 oil pan, or any other Gen III or Gen IV LS V8 engine.

Built from The Best Materials to Last

The factory LS oil pan is cast aluminum, and while generally a strong alloy to create automotive components from, you will find excessive casting ribs and bosses to aid in that strength that can be troublesome for fitment in a swap situation. Not to mention if the pan hangs down too far and hits something the usual result is a shattered pan and loss of the sump’s contents and a ride home on the roll back. We make our LS swap oil pans from steel. The steel is just as strong as aluminum without all of the fitment issues, and creates a lower profile while providing for increased sump capacity. If you do happen to strike something with the pan it will most likely leave a dent instead of shattering, allowing you get home under your own power without loss of oil. You will find anti-slosh baffles and four trap doors inside our LS swap oil pan. This creates a diamond-shaped area around the pickup, keeping the oil in place for hard driving like road racing or autocross. So, know a baffled oil pan is preferred over an open design. Our swap pans feature factory-fit pan rails with reinforcement strips that use the stock LS oil pan gasket, a full-flow oil drain with ½-20 threaded drain plug that uses a replaceable nylon sealing washer, and our pans even retain the stock dipstick setup. With just a 6-inch sump depth our LS swap pans are roughly 2-inches shallower than the GM truck pan, and with the pan kickout design we use you get a full 7-quart oil capacity for your LS conversion! Lastly, we coat our LS swap oil pan in a gold zinc coating for corrosion protection and lasting good looks.

A Direct Replacement Kit for Your LS Swap

Upgrading your LS V8 engine to make your LS conversion happen could not be easier. Our steel LS swap oil pan is a direct replacement for the cast aluminum factory pan found on Gen III and Gen IV LS engines. Due to the shallow sump design we added for additional ground clearance, our pans do require a specific oil pump pickup tube assembly, which is included in our swap kit. This is a direct replacement for the stock pickup, allowing our pan to bolt on easily. While the LS engine’s oil pan gasket is designed to be reusable, and can be reused with our steel pan, we include a brand-new OE-style reusable gasket to ensure your LS swap starts off and stays leak free.

Finish Your LS Swap Faster and Get on the Road

Don’t get stuck on the side of the road with a busted aluminum oil pan! Update your LS V8 engine’s oil pan to one of our strong steel oil pan swap kits before you drop that LS V8 swap into your ride! It is the perfect time to swap oil pans when your LS is on the engine stand getting dressed with your other LS swap kit parts for your swap, so pick up one of our LS swap oil pan kits today and get to swapping this weekend!

LS Swap Steel Race Oil Pan

• Zinc finish
• 7 Quart
• Pre-installed oil filter adapter

Pick-Up Tube for LS Swap 7QT Steel Race Oil Pan

• Black
• Designed to fit steel LS 7-quart capacity oil pans

Speedway Neoprene LS Engine Oil Pan Gasket

• Sump Style: Wet
• Structure Material: Steel
• Seal Material: Neoprene
• Gasket Style: 1-piece

CFR-1999 Performance Billet Engine Oil Dipstick

• CFR stainless braided steel flexible dipstick
• Billet handle
• Natural finish

AC Delco PF61E Engine Oil Filter

• 98% single-pass efficiency at 25-30 microns
• Patented cellulose media traps particles 1/3 the width of a human hair
• Designed with 5x greater burst strength than most engine oil operating pressures

Radiator Applications - Recommended Sizes for Common Applications:

**Please note** These are not direct-fit radiators, and will generally require some modification to the vehicle for proper fitment

1966-82 C3 Corvette - Varies by year, see below

• 1966-68 - 28" Width
• 1969-82 - 31" Width

1967-91 Chevy C/K Trucks - 31" Width

• 1967-72 Chevy C10
• 1973-87 Chevy Squarebody C10
• 1969-91 Chevy K5 Blazer

1982-93 Chevy S-Series - 31" Width

• 1982-93 Chevy S10
• 1982-93 GMC S15
• 1982-93 GMC Sonoma

1982-92 GM F-Body - 31" Width

• 1982-92 Chevy Camaro
• 1982-92 Pontiac Firebird

1982-88 GM G-Body - 31" Width

• 1982-87 Buick Regal
• 1982-87 Chevy El Camino
• 1982-83 Chevy Malibu
• 1982-88 Chevy Monte Carlo
• 1982-87 GMC Caballero
• 1982-88 Oldsmobile Cutlass Supreme
• 1982-83 Oldsmobile Cutlass Cruiser
• 1983 Pontiac LeMans (Canada Only)
• 1982-86 Pontiac Bonneville
• 1982-87 Pontiac Grand Prix

1979-93 Ford Mustang - 28" Width

1973-86 Jeep CJ - 24" Width

• 1976-86 CJ-7
• 1981-86 CJ-8 Scrambler

Direct-Fit Options:

91604059

• 1966-70 Impala
• 1966-67 Chevelle/Malibu

91604058

• 1968-72 Chevelle/Malibu
• 1970-77 Monte Carlo
• 1974-77 Buick Regal
• 1966-77 Olds Cutlass
• 1966-77 Pontiac Grand Prix
• 1968-77 Pontiac LeMans/GTO
• 1972-79 Chevy Impala, Caprice, Bel Air, and Biscayne 
• 1973-90 Chevy/GMC Truck

91604061

• 1967-69 Camaro

91604060

• 1970-81 Camaro
• 1968-79 Nova

NOTE: Applications for reference only - measure your existing radiator for proper dimensions. Measurements listed are overall which includes radiator tanks.

Oil Pan Applications:

Known to fit 1993-2002 Camaro and Firebird using the stock K-member and engine mounts.

Engine fitment:

• Fits all LS wet sump engines Gen III and Gen IV
• 1999 to 2013 Truck and SUV engines 4.8L, 5.3L, 6.0L, and 6.2L (RPO codes LM7, LM4, LQ4, LQ9, LY6, L96, L92, and many more)
• 1997 to 2002 LS1 5.7L engines from Camaro, Firebird, and Corvette
• 2001 to 2004 LS6 5.7L engines from Corvette and CTS-V
• 2005 to 2007 LS2 6.0L engines from Corvette, GTO, CTS-V
• 2008 to 2015 LS3 6.2L engines from Camaro, G8, and Corvette base model
• 2009 to 2015 LSA 6.2L engines from Camaro and CTS-V
• 2010 to 2015 L99 6.2L engines from Camaro SS

Fan Wiring Diagram (PDF)