The years of beginning onboard computers, smog pumps, ultra low compression, fuel supply altered intentionally to harm earlier engines in order to get rid of older vehicles. This is a truck that you enjoy basically as-is. In 1972, compression was lowered with a dished piston that produced only 8. As you can see, it still looks very good , and is a classic 4x4 time capsule built in the early 80's. Both engine types in the 335 series share certain design characteristics, but the only major component interchangeable between 351C engines and M-block engines is the cylinder head.
This performance specs book provides supplemental service specifications to the regular service specs book. Im 35 so i heard it all growing up from my dad. The intake side of the head provides a cross-sectional oval port which helped give the engine the high torque ratings that it was known for. You can get both 4-into-1 type headers and Tri-Y 2-into-2-into-1 headers for the M-block. We went from 350 - 450hp to 150-250hp overnight and stayed there for at least a decade.
Got the same mileage too. I have a fitted rubber bed mat that covers most of the bed, and the bed is more than solid. I don't think almost 1 ftlb of torque per ci is all that bad considering we are talking about the heavily detuned days of the 70's. Production of the 351C ended during the 1974 model year. Actually, it would have been a simple matter to install a more complicated Thermactor air injection system like the ones used on other Ford engines and pipe the fresh air to ports located just in front of the catalytic converter.
In some cases, a single piston design can be used in more than one engine. After some embarrassing failures of the Tunnel Port 302 engines, Ford developed the Boss 302 and introduced it in 1969. Compression ratios are estimated by the piston manufacturers based on the average combustion chamber volume in the factory stock unmodified cylinder heads for each engine application. Although the M-block engine is not well supported by the aftermarket performance industry, there are a few performance components that are manufactured specifically for the M-block. These are: Intake manifolds Both Edelbrock and Weiand manufacture aluminum intake manifolds that allow you to use a 4V carburetor on an M-block engine. Two new engine options - 351 and 400 cubic-inch V-8s - replaced the older 360 and 390 V-8 engines.
The compression height of the stock 400 piston is 1. Federal Mogul claims this piston raises the compression ratio with stock M-block heads from the original 8. There were several variants of the 351 Cleveland 351C engine, but there were only two M-block variants, the 351M and 400. As of 2010, the Star Wars franchise is still producing new content for a worldwide audience of rabid fans. The first M-block, the 400, was introduced in the 1971 model year as a longer-stroke variant of the 351 Cleveland design. I replaced the motor with a 80s vintage.
The truck has polished aluminum rocker trim which I have never removed. The truck could come with either an automatic of manual transmission, and models were available with two- or four-wheel drive. The 351M was a simple, de-stroked adaptation of the 400. « « « 1977 » » » 1977 Ford F150 1977 was a year to remember. This design, combined with a valve sizing of 2.
The following table lists crankshaft main bearings by engine application as identified by the bearing manufacturer. After all nothing beats cubic inches! The worst year for the factory heads of the 460 was 1972 due to a poor design of the quench area which is the area distance between the piston at top dead center and the flat surface of the cylinder head. If hp didn't matter top fuel cars wouldn't be working so hard at getting more of it. It has been very well-built as you will read below. In 1962, Ford introduced its first V8 engine with lightweight, thinwall block castings, the small block 221. I'd put one back in.
The 335 Series Engines The were two engine types in the Ford engine design family known as the 335 series, the 351 Cleveland and the M-block. The first 385 series engines were the 429 Thunder Jet introduced in 1968 Thunderbirds and the 460 introduced in 1968 Lincolns. Hp does not play near as much a factor until you get into going fast. All other components are the same. The suitability of any particular header might be determined by its fit in a particular vehicle application i.