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Buy with confidence! If for any reason you're not completely satisfied with an item, simply return it within 7 days and the purchase price will be refunded.
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We ship world wide. All international orders must be paid online. Checks or money orders drawn on non-US banks will not be accepted.
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The Ranger and Bronco II V8 Conversion Cooling System
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For proper cooling on the new engine you may need a larger radiator, and it's critical to locate it as far forward in the vehicle as possible. This allows clearance between the water pump, cooling fan, and radiator. It also allows the use of an engine driven cooling fan, which will prevent the overheating when idling in traffic associated with some lower volume electric cooling fans. 4.0L engines were available with a thick two core radiator that is adequate to cool most small V8 engines. This radiator was part of the "super cooling" package, but came with most 4.0L engines on trucks equipped with A/C. If your truck was not equipped with a 4.0L originally or has the smaller radiator, the two-core 4.0L radiator can be ordered and is a direct bolt on.
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A handy trick to gain more room at the front of the engine on V8 installations is to modify the radiator support so that the radiator can be tucked up under it. You'll need to get an adapter to install the radiator cap into the upper radiator hose since you'll no longer be able to use the one on the radiator since it will be tucked up under the support. Moroso is one of several manufacturers which makes an adapter to do this. Part # 63730 fits 1 1/2-inch radiator hose, part # 63745 fits 1 1/4-inch radiator hose, and part # 63740 fits 1 1/2 inch on one side and 1 1/4 inch on the other side. You'll need to use a radiator which doesn't have a provision on it for a radiator cap, and send the radiator out to your favorite radiator shop and have them solder the hole shut. A radiator that has a provision for a cap can be used, but you'll have two radiator caps. If you choose to use two caps install a higher-pressure cap on the radiator so that it acts as a plug and the cap you use for filling acts as the pressure relief and overflow.
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After market radiators have come down considerably in price and are available in a wide range of sizes. They're definitely worth considering. A 4-core radiator specifically for this swap is available from James Duff Enterprises, part # 3630 that retails for $325. It's designed with an extended filler neck so that the radiator may be mounted under the radiator support. You also may want to consider checking with your local radiator shop to see if they can build a custom radiator for your application.
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If you're installing a big block in a Ford Ranger or Bronco II you'll have to install a very large radiator. In our project Ranger we installed a 4-core radiator from a full sized Ford car. This radiator was huge and actually required the frame to be cut in two and rebuilt to go under the radiator. Our big block project Ranger has never overheated, even when idling in traffic on a 100 degree day. For most small block applications this much modification is not necessary.
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If you choose to tuck the radiator under the radiator support and your planning on using air conditioning the air conditioning condenser will have to located in front of the radiator, as far forward as possible. The radiator support and grill may have to be modified for added room. An after market tube grille is a handy way to free up some extra room in front of the radiator while improving the appearance of the truck. Tube grilles are usually only about a third as thick as the factory grille.
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Whenever possible use an engine driven cooling fan. A properly selected and installed cooling fan with a shroud will move a considerable amount of air and will keep your engine at the proper operating temperature. There isn't room at the front of the engine for a clutch fan so you'll have to use a flex fan. These are available from countless sources. You won't be able to use a very large diameter due to hood and shroud clearance, but you should use the largest diameter fan that will fit with adequate clearance. A 17-inch diameter fan will be about as large as you'll fit with adequate clearance, but this may vary depending on engine location. Some companies manufacture large blade flex fans, which have a steeper pitch for increased cooling power. These usually can't be used on a Ranger V8 installation because when running a small fan spacer or no fan spacer at all, the large blades on these fans will contact the belts or the crankshaft pulley. Fan shrouds from a Ranger or Bronco II V6 can often be cut down and used with a V8. This works especially well if your using a 4.0L radiator.
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If you choose to run an electric cooling fan, you probably won't have the room needed to install it on the backside of the radiator because of the close proximity to the water pump. The only practical choice is to mount electric fans between the radiator and the grille. Once again, a tube grille can help free up the room required for this on the front side of the radiator and can allow fans to be mounted where it otherwise would not be possible.
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If you need a few more inches of room at the front of your motor a possibility worth considering is one of the short water pumps offered by Ford Motorsport. The standard rotation pump is designed to be used with V belt pulleys, part # M-8501-N, and is 1.5 inches shorter than the standard small block water pump. It must be used with a special pulley set M-8509-N. There's also a short pump for use with serpentine belts. It's part # M-8509-A50. It's 1.75 inches shorter than the production water pumps and comes with a special front cover which has no provision for a mechanical fuel pump. It requires the use of a special alternator-mounting bracket M-8511-C351 and a special steel 3-piece pulley set M-8509-L or M-8509-M for aluminum pulleys. 1991-93 5.0L Thunderbird and Cougar as well as 1994-95 5.0L Mustang all used a similar short water pump and front cover and can be an excellent choice for a donor vehicle to acquire your new V8 from.
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Fuel System
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If you're installing an engine with a Carburetor into your Ranger or Bronco II there are several possibilities for fuel pumps. If your vehicle originally had fuel injection you have a fuel pump in your gas tank. This pump provides high-pressure fuel at 40 psi, which is to high for a carburetor. The in tank fuel pump will have to be removed from the tank. You can install a special mechanical fuel pump designed to clear the steering sector on the Ranger and Bronco II chassis. You may also use an after market electric fuel pump that installs in your fuel line and provides 5-7psi of fuel pressure.
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If your installing a fuel injected V8 the factory in tank fuel pump will provide adequate fuel all the way up to 250 horsepower. If your new V8 is going to exceed the 250 horsepower mark, one of the after-market high volume fuel pumps available for Mustangs may be installed in your tank. If your Ranger or Bronco II was originally carberated and your installing a fuel injected V8, you'll have to get an entire fuel tank assembly for a fuel injected Ranger or Bronco II. These are available from salvage yards that deal with wrecked vehicles.
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Heater Plenum Modifications
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The heater/Air conditioner plenum mounted on the passenger side firewall will have to be modified to clear the passenger side valve cover. The larger the engine the more the plenum will have to be modified. When using the 302, often a small piece of the plenum can be cut out of the corner, flipped over, and reinstalled with a sealer to provide the necessary clearance. If your Ranger or Bronco II has air conditioning the plenum is considerably larger and more difficult to modify. A larger section will have to be removed and replaced. You must be careful not to damage the air conditioning evaporator while performing this modification
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Body lifts are worth considering on 4-wheel drive vehicles in which a V8 is being installed. This will provide additional clearance to the heater/air conditioner plenum while at the same time providing more room around the bell housing bolts and for installation of a taller radiator.
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Previous | Next
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This has been a sample page from
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The Ranger and Bronco II V-8 Conversion 289, 302, 351, 429 and 460
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This 30 page booklet is about building high performance Ford Rangers and Bronco II. V-8 engine conversion is discussed in detail for the small block 289, 302, 351W and the big block 429 and 460. Part numbers used are given, illustrations of modifications are provided, complete conversion kits are discussed, parts manufacturers and suppliers are listed, and much more. Read the sample pages for more details!
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If you're serious about building a V-8 Ranger, you need this book!
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Click below to view sample pages from each chapter.
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Item #: MRE117 8 1/2 x 11" 30 Pages 40 b/w photos spiral bound Price: $12.00
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Click here to buy now!
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Chap. 1 - The V-8 Conversion Chap. 2 - V-8 Motor Mounts Chap. 3 - V-8 Transmissions Chap. 4 - V-8 Cooling System Chap. 5 - Axles
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Other items you might be interested in
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Turbochargers How to select and install the correct turbo for big or small horsepower gains. Discusses turbocharger design, sizing, matching, controls, carburetion, exhaust, ignition, intercooling, marine and high altitude applications. The most comprehensive book available. Turbo suppliers and kit maker addresses are included. “Everything you could possibly need to know about turbochargers for automotive applications is in this book.
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Price: $18.95
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Sport Compact Turbos & Blowers While most owners of sport compacts can afford the simple bolt-ons available, some owners want to take their modifications a step further. There is intense competition to be the fastest, and quite often the only way to win is to go to the next level – by installing a supercharger / blower or turbocharger on your engine. This book is an enthusiast’s guide to understanding and using turbochargers and superchargers on sport compact cars.
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Price: $18.95
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Shipping is combined and discounted for multiple item purchases! Buy more and save on shipping! We ship Worldwide! See International Shipping for more information!
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SHIPPING Standard shipping is a flat rate of $4.95 to anywhere in the United States with USPS Media Mail. Priority Mail shipping is available for an additional $3.00, or $7.95 shipping. Shipping is combined and discounted for multiple items purchases as follows: first item regular price shipping, add $1.95 for each additional item.
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Thanks for your business!
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