How do I identify a 409 engine?
The most obvious is the dipstick location. The 348 has it on the left, or driver side; the 409 has it on the right, or passenger side.
What years was the Chevy 409 made?
A 409 cu in (6.7 L) version was Chevrolet’s top regular production engine from 1961 to 1965, with a choice of single or 2X4-barrel Rochester carburetors.
How much horsepower did the 409 engine have?
The 409 featured a 4.31-inch bore and 3.5-inch stroke. The intake valves were 2.06 inches and fit next to 1.72-inch exhaust valves. Both actuated by a mechanical camshaft that fed air and fuel to forged pistons that created more than 11:1 compression. With its single four-barrel carb, the engine was rated at 360 hp.
Why was the Chevy 409 discontinued?
But in stark contrast to the Methuselah-like life span of the Chevrolet small-block, as early as 1963 it was clear that the 409 had reached the end of its developmental rope, due primarily to shortcomings in the design of its iconic scalloped heads.
What Chevys had a 409?
The 409 remained on the Chevy options sheet through 1965, after which it was replaced by the next-generation 396 Big Block. As it stands, you’ll regularly still find the early ’60s Impala SS with an original 409 in it.
How do I identify a Chevy big block engine?
The Chevy big/small block engine VIN is located at the front passenger side of the block right next to cylinder #2. You may also find it located on the flat block just above the timing cover (in some truck or marine blocks).
How do I know what GEN big block I have?
there are casting numbers behind the timing cover that should tell you, and casting numbers on the flywheel side of the engine that might tell you. Gen V and VI also have 1 piece rear oil seals- which does not help you unless you remove the engine.
What is the smallest big block engine?
396 Big Block. The 396 ci is the smallest of the big block engines, which is easy to confuse with a small block. However, it’s as heavy as a big block, and it has the same architecture as a big block, although its displacement is under 400 cubic inches.
How fast is a 409 Chevy?
In their September 1961 edition, Motor Trend tested the SS 409 with a 3.36 and 4.56 rear axle ratio. The 3.36 equipped car could run from 0-60 in 7.8 seconds and sprint the quarter mile in 15.31 seconds running 94 mph.
Why is 409 so hard to find?
The company eventually took Formula 409 to a 55 percent share of the spray-cleaner market, and six years later, Harrell, Woodcock & Linkletter sold the company to Clorox for $7 million. In early 2020 Formula 409 became impossible to find in stores and disappeared from the “products” listing at the Clorox website.
Why is it called Formula 409?
About the Formula 409® Brand The Formula 409® name is actually a tribute to the tenacity of two young Detroit scientists hell-bent on formulating the greatest grease-cutting, dirt-destroying, bacteria cutting cleaner on the planet.
How do you decode an engine serial number?
Decoding the VIN
- 1st Digit – Country code.
- 2nd Digit – Auto manufacturer.
- 3rd Digit – Manufacturer division.
- 4th Digit – Safety braking type.
- 5th Digit – Series.
- 6-7th Digits – Chassis type.
- 8th Digit – Engine type.
- 9th Digit – Check type.
How do I tell what year my GM engine is?
However, the most accurate way is to look at the serial number on the block, which is located on the drivers side, rear, on the extended part of the deck surface that goes over the bell housing area. The date code for the engine is built into the serial number after the first two numbers.
What was the last year for a 409 in a Impala?
The mighty 409 was fitted to just 43,775 Impalas before its run ended in 1965, overtaken by technology that a 1950s-era truck engine just couldn’t keep up with.
How can you tell a 454 4 bolt main?
Registered. ” On all Chevrolet big block engines, the method of the crankshaft bearing cap retention (2- or 4-bolt caps) can be identified without pulling the engine apart or removing the oil pan. Just check the three exterior holes above the oil filter boss. All 2-bolt blocks have the front hole drilled 5/16″.
What year is the Gen 4 454?
In 1987, a new 454 Mark IV hit the market with EFI, exclusively in trucks.
Can you put 454 heads on a 396?
For example, tossing a set of 454 open-chamber heads on a 396 could radically reduce the compression ratio because of the roughly 10cc larger chamber on a short-stroke engine. Production big-blocks all the way into the mid ’90s were always flat tappet camshaft engines.