How much horsepower did the Mopar 340 have?

With the single four-barrel cast-iron factory dual-plane intake and exhaust manifolds, the basically stock 340 revealed the glorious truth with 320.3 horsepower at 5,500 rpm. Torque was 368 lb-ft at 3,500 rpm.

What is the difference between a 318 and 340?

318`s were really not built around performance, most are lo-po 2 barrel engines while 340`s (68-71) came with 10.5 to 1 compression, windage trays, forged steel cranks, double roller timing chains, 2.02 intake valves, 3/4 cams, HD valve springs, and dual plane intakes.

How do you tell if a motor is a 340?

As stated above, on the front of the block just under the drivers side head will be the assembly date stamping pad and assembly information! If it is a 340, it will be clearly stamped on the pad!!

How do you turn a 318 into a 340?

to achieve 340 cubics with a 318 you will need a stroker crank. yep, to get up to 340 with a 318 you’ll need a stroker kit. around 1500$ or more for a kit with everything you need, including the crank, bearings, pistons, rings, and connecting rods. Get a 360!

What was the horsepower of the Mopar 340?

According to CAR LIFE Magazine, “Rated at 275 bhp, Mopar’s 340 may have had 325 or more” and that it was “as cleverly engineered as the 426 Hemi, just not so fussy.” “Besides the renowned Hemi engines for which Chrysler has been so famous, probably the best engine, is the 340 Small Block.” (4 speed, 3.91:1 gears, 14.4 ET @ 99 mph) “a giant killer.

When did the 340 cubic inch engine come out?

1968 was the debut year for the 340-cubic-inch engine by Mopar. This engine was sometimes viewed as simply a larger version of the 318-cubic-inch engine that was standard on these vehicles, as it was cast from the same block.

What was the valve number on a 1970 Mopar 340?

Some of the 1970 340 Six-Pack engines had heads with a U or O casting letter in addition to the J, but they were still the same part number (the T/A head had the intake valve pushrod holes drilled in a offset location). Valve covers for 340 engines were different than 318 valve covers.

When did the Mopar 340 restoration block come out?

Around 2000, Mopar Performance started offering a 340 restoration block that not only had the thick bulkheads of the 1970 T/A block, but also had actual four-bolt mains on the center three mains. It used the same casting number as the original 340 T/A with a 340-M added, but the siamesed-bore block is no longer offered.