What is the bore and stroke of a Dodge 440?

Bore and stroke of the Dodge 440 engine
The original Dodge 440 engine introduced in 1966 had a bore of 4.25 inches and a stroke of 3.75 inches, resulting in a displacement of 440 cubic inches.
In 1971, the bore and stroke were changed to 4.125 inches and 3.375 inches respectively . However, the firing order of 1-8-4-3-6-5-7-2 remained the same throughout the 440’s production run from 1966 to 1978.
High performance versions of the 440, like the famous “Six Pack” variant featuring three two-barrel carburetors, had larger bores. For example, the Six Pack 440 used in the Dodge Super Bee had a bore of 4.38 inches.
Aftermarket companies also offered stroker crankshafts that increased the stroke beyond stock dimensions. One example was a 440 given a 4.15 inch stroke crankshaft, increasing displacement to around 505 cubic inches.
In summary, the standard bore and stroke sizes for the Dodge 440 engine were 4.25×3.75 inches originally, and 4.125×3.375 inches after 1971 according to multiple sources. High performance variants often utilized larger bores closer to 4.38 inches.

How much HP can a stock 440 block handle?

Although the most powerful factory stock 440 engines produced a rated 390 gross horsepower, the OEM blocks can take power in the 600hp range, and survive practically indefinitely at the 500-550hp level. Mopar built quite a bit of strength into the bottom end of these engines.

How much horsepower can a 440 handle?

Although the most powerful factory stock 440 engines produced a rated 390 gross horsepower, the OEM blocks can take power in the 600hp range, and survive practically indefinitely at the 500-550hp level. Mopar built quite a bit of strength into the bottom end of these engines.

What’s the difference between a Dodge 440 and a 440 Magnum?

Q: What is the difference between a 440 and a 440 magnum? The high performance version of the Chrysler 440 was known as a Magnum in Dodges, a Super Commando in Plymouths, and a TNT in Chryslers, and was based on the RB block platform with 10.72″ deck height, 4.80″ bore spacing, 4.320″ bores, and a 3.750″ stroke crank.

How much horsepower does a 440 stroker kit have?

540-. 560″ lift range, most people will end up making in the 540-580 horsepower range. With our CNC ported STEALTH heads, horsepower numbers in the high 600 to low 700 range are not uncommon. With the more serious race heads such as Indy, B1, etc, many people are making 700-800 horsepower or above.

Was the 440 faster than the 426 Hemi?

The 426 Hemi was better than a 440 six pack because it had more horsepower and faster 1/4 mile and 0–60 times. The 426 Hemi had 425 horsepower at 5,000 rpm while the 440 six pack had 390 horsepower at 4,700 rpm.

What is the bore and stroke of a 400 Mopar?

Robinson started with a production 400 block, a configuration with a stock bore and stroke of 4.342 by 3.375 inches, and produced from 1972 to 1978.

What is the bore and stroke of a 454?

Even with Gen V/VI revisions, the 454’s displacement remained constant for decades until GM radically changed the big-block, pushing a production heavy-duty truck engine up to 8.1 liters (496ci) that appeared in 2001. The bore remained at 4.250 but the stroke increased from 4.00- to a hefty 4.37-inches.

What is the bore of a stock 440 Mopar?

A stock 440 combines a sizeable 4.320-inch bore with a tiny 3.75-inch stroke to produce 440 cubes.

What is the difference between the 426 and 440?

The 426 Hemi was better than a 440 six pack because it had more horsepower and faster 1/4 mile and 0–60 times. The 426 Hemi had 425 horsepower at 5,000 rpm while the 440 six pack had 390 horsepower at 4,700 rpm.

What was the bore and stroke of the 426 Hemi?

Specifically, the 426 Hemi and 426 Wedge had a bore × stroke of 41⁄4 in × 33⁄4 in (108.0 mm × 95.3 mm).