How much HP can you get out of a 409?

520 hp
High-perf 409 heads have 2.19/1.72 valves, flow 255-260 cfm on the intake side, and can support up to 520 hp as delivered; expect to shell out $500-$800 for a good set of cores.

What did the Chevy 409 come in?

They had a bore of 4.125 inches and a stroke of 3.25 inches, and were available in cars through 1961 and trucks through 1964. The 409 was introduced at the end of 1961. With a bore of 4.3125 inches and a stroke of 3.5 inches it had a solid lifter cam, a single Carter AFB, and was rated at 360 hp.

What size engine is a 427?

7.0 L
The highly successful and versatile 427 cu in (7.0 L) version of the Mark IV engine was introduced in 1966 as a production engine option for full-sized Chevrolets and Corvettes.

Who made the 409 engine?

That is, 409 cubic inches, 409 horsepower, one horsepower per cubic inch. More than 15,000 of these powerplants were produced by Chevrolet’s Tonawanda, New York engine plant, just north of Buffalo.

Why was the Chevy 409 discontinued?

Why Was The Chevy 409 Discontinued? Although its Methuselah lifecycle is as short as Chevrolet’s small-block, as early as 1963 it was obvious that the 409 had come to an end with its iconic scalloped heads due to poor design.

What was the problem with the 409 engine?

It’s all about transferring heat away from the system and related parts and assemblies. On 348/409 engines, users have reported these problems and solutions. Brad from Show Cars says, “The most common problem is the use of a small-block fan shroud, or no fan shroud at all. The 348/409 fan shroud is shorter.

What years did Chevy use the 409 engine?

Through its five-year production life (1961-1965) the 409 was offered not only in high-performance versions with high compression and multiple carburetion, but also in single-carb tune for regular highway use.

Who made the 409 motor?

409. 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. Bore x stroke were both up from the 348 cu in (5.7 L) to 4.31 in × 3.5 in (109.5 mm × 88.9 mm).

Who made the 396 engine?

Chevrolet developed its big block 396-cubic-inch V8 engine in response to the big engines powering the Oldsmobile 4-4-2 and Pontiac GTO. Beginning in 1965, the 396 engines powered Chevelles, Corvettes and El Caminos. Chevy phased out the 396 in 1969.

Who made the 429 engine?

The Boss 429 was built beginning in 1969 by Kar Kraft of Dearborn, Michigan, so Ford could homologate its hemi-head 429 in NASCAR racing.