their NASCAR siblings. Few people wanted them.
Ford took another shot at NASCAR with the Boss 429 big-block in 1969–1970. Originally developed as the Ford Blue Crescent with cast-iron heads, Ford engineers refined the most exotic of the 385s giving it aluminum heads to reduce weight and enable more power. The downside to the street Boss 429 was its detuned reputation and poor performance, even though it did make 375 hp. The 1969 Boss 429s were fitted with hydraulic lifters. Realizing this engine’s power shortcomings, Ford went to mechanical lifters and a more aggressive cam for 1970. This engine wanted to rev and did when built to NASCAR specifications.
The Boss 429 engine was another exotic offering from Ford. It was decidedly temperamental for so many reasons, which made it a less-than-adequate street engine. They sputtered and stalled. They had Cooper rings and O-ring seals instead of gaskets to keep combustion where it belonged within the dry deck.
Gross Horsepower/Torque versus SAE Net
Prior to the 1972 model year, manufacturers published horsepower and torque figures at the engine’s crankshaft. Beginning in 1972, the Society of Automotive Engineers (SAE) changed horsepower and torque numbers from gross to net, which meant measuring power output with all accessories and related pieces installed and operating. In other words, SAE Net horsepower and torque is measured based as though the engine is installed in the vehicle. Gross horsepower and torque were measured at the crankshaft with the engine void of any accessories.
The 429 Cobra Jet for 1970–1971 with 360 hp on tap. Ram-Air was an option, as was the Super Cobra Jet with 375 hp. These were first to leave the traffic light, especially the solid lifter 429 Super Cobra Jet.
Gross horsepower and torque numbers weren’t always honest either. Automakers raised numbers to sell more vehicles. They also reduced horsepower and torque numbers to satisfy regulating bodies and insurance companies. Power ratings depended largely on what was happening at the time. During the horsepower wars of the 1960s, automakers didn’t always tell the truth about real, usable power. SAE Net quickly curbed gross numbers advertised by automakers, calculating real world power more accurately.
Ford FE Big-Block General Engine Specifications
Some engine specifications were unavailable. ■
Ford MEL Big-Block General Engine Specifications
Some engine specifications were unavailable. ■
Ford 385 Series Big-Block General Engine Specifications
Some engine specifications were unavailable. ■
CHAPTER 2
CYLINDER BLOCK
The very heart of any big-block Ford build is the cylinder block. Block selection contributes to the success or failure of an engine project. Whether you’re building a mild 332 for a vintage Ford restoration or erecting a stump puller of a 460, it’s important to know the difference between a good block and a bad one. Because Ford has long been infamous for engineering changes, you can count on a plethora of block castings in a single model year.
FE Series
Although there are few differences in FE Series blocks it is important to understand what these differences are in order to choose the correct block for your application. Those first production 332- and 352-ci FE blocks were manufactured for mechanical lifters only, which means there are no lifter oil galleys. In midyear 1958, Ford upgraded the 332 and 352 to hydraulic lifters, which means you may opt for mechanical or hydraulic lifters. One exception to this rule is the 1960 352 High Performance block, which is not drilled for hydraulic lifters.
Another area to watch for is the FE engine mount bolt holes prior to 1965. FE blocks prior to 1965 have two-bolt engine mounts. Since 1965 there are four–bolt-hole engine mounts of which three holes are used. This isn’t a problem if you’re planning to use a 1965 or later block in a pre-1965 vehicle. However, there will be issues when you try to install a pre-1965 FE in a post-1965 Ford vehicle. A custom adapter plate or some drilling and machining will be required. If you unearth a block with four engine-mount bolt holes, you’ve found an FT truck block.
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