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Ford Engine BuildupPerformance Rebuilding a Small-Block Ford Engine From the February, 2009 issue of Rod & Custom By The Rod & Custom Staff Photography by The Rod & Custom Staff
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 Von Pen installed the clean...  Von Pen installed the clean Ford block in the fixture and started the boring procedure. This block was bored 0.030 oversize.  The block was decked after...  The block was decked after it was bored. Decking ensures a perfectly flat deck-to-head surface.  The boring and decking process...  The boring and decking process leaves a very sharp cylinder-bore-to-deck surface angle so it's always advisable to chamfer the edge to make it easier to install the pistons and rings. If the edge remained sharp, it's very likely the rings would hang up during the piston installation.  The cylinder bores were honed...  The cylinder bores were honed approximately 0.005 to size. This process also provides a crosshatch pattern which will help the rings seat quickly.  With the main caps torqued...  With the main caps torqued in place, Jose Gonzales align-bores the journals. This ensures that the journals are sized correctly and that they will be perfectly straight.  The 302 rods were drilled...  The 302 rods were drilled for A.R.P. hardened rod bolts designed to withstand higher rpm conditions.  PAW has a special fixture...  PAW has a special fixture and press to install the hardened rod bolts.  PAW also resizes all of the...  PAW also resizes all of the rods to ensure proper rod-bearing-to-crank clearance. In this process, the rods are installed in the hone, then checked periodically until they are perfect.  The rods are taken out of...  The rods are taken out of the machine and checked on this micrometer. If they are not the perfect size, they get a little more time in the resizing hone.  After the rods have been resized,...  After the rods have been resized, the sides are sanded flat on a belt sander. This ensures that the rod and cap line up perfectly.  Notice the top and bottom...  Notice the top and bottom end are sanded flat.  When the rod machine procedures...  When the rod machine procedures were completed, Manuel Lemus torqued the rod and cap together. Now the rods are ready for piston installation.  Jose Hernandez installed the...  Jose Hernandez installed the crank in the polishing machine and micropolished the crank for a very smooth finish. Micropolishing the crank enables it to spin freely without any friction or heat buildup.  When new pistons are installed,...  When new pistons are installed, the reciprocating assembly should be balanced. The pistons and pins were weighed to find the lightest one. All of the other pistons will have to be machined to match the weight of the lightest piston.  The rods were also weighed...  The rods were also weighed to find the lightest one. When the total weight was found, the big and small end were weighed. Weight will have to be removed from the heavier rods to match the weight of the lightest one.  The piston weight is machined...  The piston weight is machined from pads inside the piston. Here we see Jose Hernandez matching the weight of this piston to the lightest one. You machine off some weight, then weigh the piston. If it's still too heavy, you continue to machine it. After balancing a number of engines, these fellows know just how much material to remove.  After all of the rods and...  After all of the rods and pistons are machined to the same weight, Juan Carlos Avalos calculated the weight of two rods, bearings, pistons, rings, and pins, and made bob weights that are connected to the rod journals. The bob weights take the place of the actual pistons and rods during the crank balancing procedure.  With the bob weights, harmonic...  With the bob weights, harmonic balancer, and flexplate installed, Juan Carlos spins the crank on the computer balancing machine. The machine indicates where the out-of-balance condition exists. Generally, the crank counterweights have to be drilled to achieve a perfect balance.  Juan Carlos Avalos installed...  Juan Carlos Avalos installed the rods on the pistons. The piston end of the rod is heated in a small oven, and when it's hot enough, it's pulled out of the oven and installed in the piston, then the pin is inserted while the rod is still hot. In the process of hot rodding a '41 Ford pickup, we had to decide what engine we wanted to use. The truck had already been outfitted with a small-block Ford engine, but it was obvious that the '65 289 was straight out of a wrecking yard. There was no telling if the engine was in good condition, how many miles were on it, or how long it had been sitting around. Since we were building a pretty nice street rod pickup, it was our decision to use the Ford engine and update it with some modern performance items. The nice thing about powering a street rod with a Ford engine is it's small and lightweight, will easily fit in an early Ford engine compartment, and runs cool. The small-block Ford engine was designed in the early '60s as the powerplant for the new intermediate Fairlane, and was introduced as a 221ci engine in 1962. The engine ran well, had plenty of performance potential, and quickly grew to 260- and 289ci. In fact, the 289 engine came out in several configurations: a two-barrel base engine; a four-barrel GT engine; and as a four-barrel, solid lifter cam, high-performance engine. Rated at 271 hp, the high-performance engine ran very strong in a lightweight Fairlane, Falcon, or Mustang, but in the hands of Carroll Shelby, 306 hp was achieved, and the Mustang became the car to beat in SCCA racing. Ford continued to develop the small-block which grew to 302ci in 1968. In 1969 Ford increased the engine's deck height by an inch and came up with a 351ci engine for the new Mach 1 Mustangs. Although other engines such as the 351 Cleveland and the 351 and 400 M engines have come and gone, the 302 and 351 Windsor engines continued to flourish until recently, when they were replaced by the Modular engine. They may be gone from production cars, but they are still available from Ford Motorsport/SVO and auto wrecking establishments all over the country. The success and longevity of the Ford small-block brought about many great speed parts from a variety of suppliers. The most notable problem encountered with small-block Fords is the factory head design was always on the small side. Over the years, several companies introduced new high-performance heads to remedy the problem, and one of the nicest sets is made by Edelbrock. Because of their high-quality and aluminum construction, the small-block 302 we're working on is running a set of Edelbrock Performer heads, an Edelbrock dual-quad intake, and a pair of Edelbrock AFB carbs. We used Crane for the cam and valvetrain components which consisted of the cam, lifters, pushrods, and roller rocker arms. Timing is going to be handled by an Edelbrock gear drive. We decided to use an MSD ignition system to light the fire, and Rodworks Street Rod Headers to exit the exhaust. Performance Automotive Warehouse (PAW) was responsible for the entire rebuild starting with a Superstock Crank Kit which includes a crank, pistons, rods, rings, and bearings. We wanted a few extra cubic inches, so we installed 302 crank rods and pistons. PAW offers a huge supply of speed equipment, so we got all of the Edelbrock, Crane, and MSD electrical components from the company. It's hard to beat one-stop shopping, especially at PAW's excellent prices. PAW also has a complete machine shop facility which is where all of the engine machining took place. We also had to order a top-quality set of engine brackets for the alternator and air conditioning compressor, so we contacted Zoops for its award-winning units. We disassembled the '65 289 engine and delivered the parts to PAW, which cleaned the block and checked all of the parts for damage. When everything checked out OK, the block and crank were machined for the new parts. Here's an overview of what happened.
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Automotive Racing Products (A.R.P.)
531 Spectrum Cir.
Oxnard
CA
93030
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MSD Ignition
El Paso
TX
9-15/-857-5200
msdignition.com
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Crane Cams
530 Fentress Blvd.
Daytona Beach
FL
32114
3-86/-252-1151
N/A
www.cranecams.com
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Performance Automotive Warehouse
Chatsworth
Ca
ARGET="_new">www.pawinc.com
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Edelbrock Corporation
2700 California St.
Torrance
CA
90503
310-782-2222
www.edelbrock.com
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Rodworks Street Rod Headers
19 Aviador, Unit A
Camarillo
CA
93010
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Federal-Mogul (Fel-Pro)
2-48/-354-7700
federal-mogul.com/en
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Zoops Hot Rod Products
900 E. John St., Unit G
Banning
CA
92220
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Ford Motorsport/SVO
Clinton Township
MI
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O'Brien Truckers
29 A. Young Rd
Charlington
MA
01507
508-248-1555
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