Let’s examine the camshaft specifications for the 1963 and 1964 426 Maximum Performance (nicknamed Max Wedge) engines. The 1963 426 Max Wedge engine had a mechanical cam with a duration of 300°, a lift of .509″ and a 75° overlap. That cam was replaced later in 1963 with another mechanical cam with a duration of…
There were two different horsepower and torque ratings for the 426 Maximum Performance Wedge (nicknamed Max Wedge) depending on the compression ratio of the engine. The 426 Max Wedge engine with 11.0:1 compression ratio (1963-1964) has the following power ratings: The 426 Max Wedge engine with 13.5:1 compression ratio (1963) has the following power ratings:…
A common thought about Chrysler race engines is how fast they were. The 413 Max Wedge is no exception. Let’s take a close look at how fast it really was. The 413 Max Wedge engine was road tested in 1962 and recorded a 1/4 mile elapsed time and speed of 14.40 seconds at 101 mph….
Many people wonder which cars had a 413 Max Wedge engine. The 413 Max Wedge engine came in all 1962 intermediate B-body Plymouths and Dodges except for station wagons, Police cars or taxi vehicles. This included the Savoy, Belvedere, Fury, Sport Fury, Dart and Polara 500 models. The following is a list of all the…
The 413 Max Wedge crankshaft is made of forged steel and has a 3.750″ stroke. It is similar to the standard 413 crankshaft except it has hardened journals and shot peened fillets. The main bearing journals are ground .0005″ under the standard shaft size. This was done for the following reasons: The crank’s connecting rod…
Many people wonder about the differences between a 413 and a 413 Max Wedge. A 413 Max Wedge engine was made for competitive racing while the standard 413 was produced for passenger vehicles. Although based on the same engine block design, the Max Wedge has more horsepower, higher lift cam, shorter cross ram intake manifold,…
The 413 Max Wedge engine and cars get all the attention but some people wonder which transmissions were offered. The 413 Max Wedge engine came standard with a Borg Warner T-85 close ratio three speed manual transmission. An automatic 727 torqueflite transmission was available as an option. The T-85 manual was shifted using a floor…
An iconic engine like the 413 Max Wedge should be protected against over revving the engine too much. The Chrysler engineers recommended to protect the fine working parts of the 413 Max Wedge engine, it should not be run over 6,500 r.p.m. Also, wide open throttle operation must be limited to fifteen seconds in duration….
The 413 Max Wedge cylinder head is made of cast iron and has 25% larger intake and exhaust ports than the previous 413 engine. The intake valves are 2.08″ and the exhaust valves are 1.88″, 1/4″ larger. The cast number is 2402286 and the part number is 2402358. The combustion chamber volume is 83 to…
The 413 Max Wedge engine came with a Carter high capacity, mechanical diaphragm fuel pump. The Chrysler part number is 2421466 and Carter model M3446. The pump has three valves for maximum capacity and a high-pressure spring delivering 6-8 p.s.i. @ 1,500 rpm. The fuel pump is driven by the camshaft and is made of…
Let’s examine what type of intake manifold the 1962 413 Max Wedge (Maximum Performance) engine was produced with. The 413 Max Wedge engine intake manifold is an aluminum cross ram design engineered to mount two 4-barrel carburetors diagonally across from each other. The intake runners are 15″ long and are tuned to increase engine horsepower…
Let’s take a close look at the firing order of a 1962 413 Max Wedge (Maximum Performance) engine. The 413 Max Wedge engine firing order is 1-8-4-3-6-5-7-2. The firing order is the same for the Plymouth Super Stock 413 and the Dodge Ramcharger 413 engines. This article will inform you of all the cylinder number…
Many new engines are measured in liters so many people ask how many liters is a 413 Max Wedge engine? A 413 Max Wedge engine is 6.8 liters rounded off. The exact liter measurement is 6.767857431415782. Keep reading to find out how I calculated 413 to liters. This formula will work properly to calculate any…
Let’s take a close look at the deck height of a 1962 413 Max Wedge (Maximum Performance) engine. The deck height of a 413 Max Wedge engine is 10.725 inches. The deck height is the same for the Plymouth Super Stock 413 and the Dodge Ramcharger 413. This article will explain how to measure deck…
A common question my readers often ask is, how many quarts of oil does a 413 Max Wedge take? The 413 Max Wedge engine oil capacity is 6 quarts, five quarts for the oil pan plus one quart for the filter. The six-quart capacity is the same for the Plymouth Super Stock 413 and for…
The 1962 413 Max Wedge engine has a 5-quart oil capacity and a front and rear baffle. The two baffles helps with oil control during acceleration. The oil pan uses a swinging pickup for oil transfer to the rear of the pan during acceleration and to the front during deceleration. The 5-quart capacity is for…
Let’s take a close look at the 413 Max Wedge carburetors. The 413 Max Wedge engine was produced with two Carter AFB four-barrel carburetors, list #3447S and part #2402359. They flowed approximately 600 CFM each with 1-7/16 inch primary bores and 1-11/16 inch secondary bores. The carburetors were mounted diagonally across from each other and…
Let’s take a look at the 1962 413 Maximum Performance (Max Wedge) engine camshaft specifications. The 413 Max Wedge engine had a cam duration of 300°, 75° overlap and a lift of .509″ intake and exhaust. The camshaft used flat-faced mechanical tappets. Plymouth and Dodge both had their own versions of the 413 Max Wedge….
There were two different compression ratios for the 413 Maximum Performance Wedge (nicknamed Max Wedge) engine produced in 1962. The 413 Max Wedge engine has the following two compression ratios: Year 413 Max Wedge (Dodge) 413 Max Wedge (Plymouth) 1962 Ramcharger 41311.0:1 or 13.5:1 Compression Ratios Super Stock 41311.0:1 or 13.5:1 Compression Ratios 413 Max…
There were two different horsepower and torque ratings for the 413 Max Wedge (1962) depending on the compression ratio of the engine. The 413 Max Wedge engine with 11.0:1 compression ratio has the following horsepower and torque: The 413 Max Wedge engine with 13.5:1 compression ratio has the following horsepower and torque: Year Max Wedge…
The 413 Max Wedge is an 8 cylinder engine which has 413 cubic inches, a 4.19″ bore and 3.75″ stroke. It came with two compression ratios and horsepower, 11.0:1 C.R. (410 H.P.) and 13.5:1 C.R. (420 H.P.). The engine has 2×4 bbl carburetors on a cross ram intake manifold, 2.08″ intake valves and 1.88″ exhaust…
First, let’s examine what type of manifold the 426 Street Hemi was produced with. The 426 Street Hemi engine intake manifold is a dual-plane design engineered to fit two 4-barrel carburetors. It is made of aluminum, and the basic design remained the same from 1966-1971 with some slight variations with its markings. The intake manifold…
The 426 Hemi distributor hold down has a notch cut machined in the top, is straight across at the bottom and has one bolt hole. The notch is located at the top angled area towards the intake manifold side. The notched hold down was originally produced for the 426 Max Wedge and Race Hemi engines…
The 426 Hemi street engine had a dual point distributor produced by Prestolite. The distributor was made of cast iron and operated with vacuum advance. It rotates counterclockwise and is located in the front of the engine on the passenger side of the block. The distributor had a metal tag secured to its housing with…
One of the components to 426 Hemi Engine is the size of its intake and exhaust valves. The 426 Hemi intake valve head diameter is 2.25,” the length is 5.316″-5.331″ and the stem diameter is .3085″-.3095.” The exhaust valve head diameter is 1.94,” the length is 4.7543″-4.7693″ and the stem diameter is .3075″-.3085.” Both valves…
One of the topics asked about is the 426 Hemi engine’s fuel pump. From 1966-1971 the 426 Hemi Engine used a mechanical fuel pump manufactured by the Carter Company. It’s a diaphragm type with the model number MS-4024S. The fuel pump contains 3 valves, is driven by the camshaft and has 6 1/2 to 8…
Many people think the first Nascar 426 Hemi intake manifold was the bathtub design but it wasn’t. The first Nascar 426 Hemi Engine intake manifold was a single four barrel, dual plane aluminum intake manifold. It was first used during the 1964 Nascar season and its casting number is 2468043. Let’s take a closer look…
During my last visit to the Chrysler Nationals I visited one of the earliest 426 Hemi engine blocks. Let’s examine why this block is the earliest surviving 426 Hemi engine block. The 426 Hemi engine block has an early casting date of 10/17/63. The letters, EXO, on the engine pad and poor casting areas throughout…
The 440 engine wrist pin size and pistons are often asked. Let’s answer, what size wrist pin and pistons are in a 440 engine? The 440 wrist pin is 1.0935″-1.0937″ diameter and 3.555″-3.575″ long. The pistons are made to fit a 4.320″ engine bore size. Continue reading below for more of the 440 engine pistons,…
The 440 Six Pack or Six Barrel piston and wrist pin sizes are often asked. Let’s answer, what size pistons and wrist pins are in a 440 Six Pack engine? The 440 Six Pack/6-BBL pistons are made to fit a 4.320″ engine bore size. The wrist pin is 1.0935″-1.0937″ diameter and 3.555″-3.575″ long. Continue reading…