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Chrysler's 426 Hemispherical Engine, better known as the Hemi is recognized  world wide for a reason

  426 Hemi, a name once known only amongst car buffs.

 Now seems as common of a name as Jones or Smith. An engine that came about from the famous Max Wedge.

  It's as popular today as it was in the 60's and 70's. And why not? It's Big, Bad, and intimidating to anyone who's ever seen it.  


       You know one thing that I miss from the modern day Hemi's is the Chrome, the nice paint job & other bolt on accessories you could install like you could in the 60's and 70's.          
 

Some fast facts you may not know on Chrysler's  famous 426 Hemi engine

  1. The Welch Motor Car Company and owner Alan R. Welch are credited for the hemispherical engine. Better known to most as all famous Hemi.In fact the first was a 20-horsepower, 2-cylinder engine with a single overhead camshaft.
  2. There is 3 generations of Hemi Engines:1st=1951-1958, 2nd=1964-1971, 3rd= 2003 to present. 
  3. 1st generation were refered to as "red ram"  "firedome"  &  "firepower
  4. Hemi is  short for Hemispherical
  5. Compression ratio for the 426 Hemi 10.28:1
  6. The 426 Hemi ran only on premium gas
  7. The 426 Hemi weighed around 725 pounds
  8. Six miles to the gallon was average for the Hemi
  9. Due to a gas shortage, 1971  was the end for the second generation of Hemi's
  10. The 426 Hemi produced 425 Horsepower (under- rated to due insurance)at 5,000 rpm and 490 foot-pounds of torque at 4,000 rpm's
  11. Even speed boat racers made sure they had a Hemi aboard; like Don Garlits
  12. In 1957 you could find a Hemi resting in the engine bay of a Chrysler 300c

Chrysler's big block engines and the model year availability

 CUBIC INCH

 BORE stroke

 COMPRESSION

 Horse Power @ RPM

 TORQUE @ RPM

 CARBURETION

ENGINE CODE

 Model

 361

 4.125 x 3.375

 9.0:1

310 @ 5,200

390 @ 3,400

 2 X 4 Carbs

 S-36

 Ramcharger Dodge Polara Cross Ram V-8 (1962) & (1963)

 361

 4.13 x 3.38

 9.0:1

 265 @ 4,400

 380 @ 2,400

 Four Barrel

 B-361

 Dodge Charger Optional (1966)

 383

4.25 x 3.375

10.1:1

 320 @ 4,600

 420 @ 2,800

 Four Barrel

 D-500

 D-500 Dodge (1959)

 383

 4.25 x 3.375

 10.1:1

 345 @ 5,000

 420 @ 3,600

 2 x 4 carbs

 D-500

 D-500 Dodge (1959) optional

 383

 4.25 x 3.375

 10.0:1

 330 @ 4,800

 460 @ 2,800

 Four Barrel

 P-38

 D-500 Dodge (1960)

 383

 4.25 x 3.38

 10.0:1

 325 @ 4,800

 425 @ 2,800

 Four Barrel

 B-383

 Dodge Charger Optional (1966)

 383

 4.25 x 3.38

 9.2:1

 270 @ 4,400

 390 @ 2,800

 Four Barrel

 C-383 VIN code G

 Dodge Charger Optional (1967) (1968)

 383

 4.25 x 3.38

 10.0:1

 325 @ 4,800

 425 @ 2,800

 Four Barrel

 C-383 VIN code H

 Dodge Charger Optional (1967)

 383

 4.25 @ 3.38

 10.0:1

 300 @ 4,400

 400 @ 2,400

 Four Barrel

 PT-383 VIN code H

 Dodge Dart GTS (1968)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 









 

The Godfather of Chrysler engines- Whats the name?- None other than the Max Wedge

The Max wedge "stage" cylinder heads were used in all 1962 max wedge 413's and in stage 1 and stage 11 426's.

The castings could be identified by their 4-bolt valve covers and the five flats cut for their bolt-on rocker shaft stands.

Max Wedge heads pack streamlined intake valves and ΒΌ-inch larger exhaust valves.


All were cast without provisions for the B-engine's standard intake heat crossover passage.

The stage heads will fit every B-engine that Chrysler made.

 

The 426-S wedge-Head engine called the commando in 1965 was advertised by Plymouth as quote "the street version of our competition designed 426 Hemi engine, which holds more records than our competitors care to count. 


The Chart below shows Engine block serial numbers Stamping and what the numbers represent when located on the engine

The Stampings on top of the block will look 
something like what's on the chart below

There are a couple of places to look for the Block Identification Numbers on 

the B and RB engines.

One place is a pad at the left front of the engine on top.


The second place to look for the Block Identification numbers is on the bottom 

of the engine, next to the oil pan flange.

The High Performance 6bbl carburetor and Chrysler Engines

These 6bbl engine package was only built for about 3 years. And mostly came about during the muscle car era.


These 6bbl engine package was available on the big block and small block engines.


With these 6bbl package the Chassis,drivetrain,suspension and the body

itself were "upgraded" by Chrysler.


The 1968 RoadRunner introduced the 440 6-pack. The second introduction was the option for the 1967 year 440 4bbl

high performance engine. Also referred to as A134.


The 440 6bbl engines were machined and assembled at Trenton engine plant in Trenton MI.


The 360 6-bbl engines were machined and assembled at Mound road engine plant in Detroit MI.


All of the 426 Hemi engines were built at a special location called Chrysler's M and I division.