Stock FAQs

what is the stock stroke on magnum 360

by Prof. Tremayne Ritchie II Published 2 years ago Updated 2 years ago
image

Bore & Stroke: 3.91 in × 3.31 in (99.3 mm × 84.1 mm) Displacement: 318 cu in (5.2 L)

What kind of engine does a 360 Magnum have?

The 360 Magnum engine has a cast-iron block with a five-bearings crankshaft supported system. The cylinder bore is 101.6 mm (4.00 in), piston stroke is 90.9 mm (3.58 in) and the compression ratio rating is 9.1:1.

How much power does a Mopar Magnum 360 crate engine have?

Mopar's Magnum 360 crate engines were offered in 300- and 380-hp versions, both based on the production Magnum 5.9. The higher-powered engine comes with higher-compression pistons, a long-duration camshaft, and a single-plane Mopar Performance intake.

What types of 360 Stroker assemblies do you offer?

We offer stock stroke 360 rotating assemblies, Dodge, Plymouth, Mopar 360 stroker kits, and Dodge 5.9L Magnum stroker kits.

When did the Mopar Magnum engine come out?

The introduction of Mopar's Magnum series of engines was the most significant revision of the Mopar small-block since its introduction in 1964. There are some points to consider when deciding whether a Magnum engine is the right choice in an engine buildup and when mixing and matching components or applications.

image

How much HP does a stock 360 Magnum have?

between 230 and 250 hpThis 5.9L core is cast with the numbers "360" on its side. These engines first appeared in 1992 (5.2L only, the 5.9L in 1993) and were made by the millions through the 2003 model year. The 360ci (5.9L) Magnum had a rated output between 230 and 250 hp.

What displacement is a 5.9 Magnum?

The 5.9 Magnum is a naturally aspirated 5.9L V8 engine that was produced by Chrysler from 1992 up until 2003. With 360 cubic inches of displacement, the engine is also commonly referred to as the 360 Magnum. In 2003 the 5.9 Magnum was replaced with the 5.7L Hemi V8.

Is the Dodge 360 a good engine?

The Mopar 360 can make an excellent performance engine. It was introduced with a 2-bbl carburetor in 1971. Not intended as a performance engine, it also featured a cast crankshaft and low compression ratio (8.5 to 1) cast pistons.

What makes a Magnum engine a Magnum?

Magnum heads featured machined valve-cover rails, with ten valve-cover fasteners, as opposed to the LA engine's five. This makes the Magnum valve covers unique. The intake manifold attachment was changed to a vertical bolt pattern, from the angled pattern used earlier.

What is the bore and stroke of the 5.9 Magnum?

The LA 360 cu in (5.9 L) has a bore and stroke of 4 in × 3.58 in (101.6 mm × 90.9 mm).

How much power can a 5.9 Magnum handle?

The Engine Magnum 5.9 engines commonly carried a rating of 245 horsepower, with the tiny factory hydraulic roller camshafts delivering a hair over . 400-inch lift.

How can I get more power out of my Dodge 360?

0:4718:03Squeezing More Power Out Of Our High-Performance 360 MoparYouTubeStart of suggested clipEnd of suggested clipCover water pump balancer and pulleys something we are replacing is the carburetor.MoreCover water pump balancer and pulleys something we are replacing is the carburetor.

Is the Dodge 360 a big block?

The fact is, the small block Mopar LA-engines (318, 340 and 360cid) were under-rated at the factory and were the last of the big three small blocks to be offered to the public.

Is a Magnum engine a Hemi?

3:2413:22JUNKYARD DODGE 5.9L MAGNUM VS JUNKYARD 5.7L HEMI-WHO ...YouTubeStart of suggested clipEnd of suggested clipSo it was a hemi. Now originally the hemi was rated at 100 more horsepower than the magnum. It wasMoreSo it was a hemi. Now originally the hemi was rated at 100 more horsepower than the magnum. It was rated at 345 horsepower. And 375 foot-pounds of torque. The interesting thing is the the magnum.

How much does a 360 Magnum weight?

The 5.2 & 5.9 Magnum engines are not listed but should be slightly lighter than their LA counterparts....EngineWeightMopar 360 "LA"550Mopar 350-361-383-400 "B" V8620Mopar 413-426W-440 "RB" V8670Mopar Street Hemi76517 more rows•Dec 16, 2017

How much horsepower does a 1974 Dodge 360 have?

For the 1974 Dodge line, a new variation of the 360 was made with a four-barrel carburetor, resulting in 200 hp and 290 lb.

What's the difference between Magnum and Hemi engine?

The Hemi is newer, uses an aluminum block and heads where the Magnum uses iron, and the Hemis have a higher power rating than the 5.9 Magnum ever had. Besides, if you use a Hemi, you get to slap one of those cool “Yeah, it's got a Hemi” bumper stickers on your car.

How much horsepower does a Magnum have?

With the jetting dialed in, the power pulls confirmed that this parts selection put major firepower in the basic Magnum package, with 448 hp recorded at 5,800 rpm and 435 lb-ft of torque coming to bear at 4,900 rpm. The cam, heads, intake, and valvetrain package was worth a staggering 129 hp on the stock Magnum mill. For us, that is a righteous gain for a well-selected assortment of out-of-the-box aftermarket parts on a stock production engine. Far from a raucous and unruly combination, the modified engine idled easily at 850 rpm with 12 in-Hg of manifold vacuum, a level that is right at home in a street-driven machine. With output like this ready for the taking, it might be worth considering giving Magnum power a home in your Mopar machine.

When was the Magnum engine introduced?

The introduction of Mopar's Magnum series of engines was the most significant revision of the Mopar small-block since its introduction in 1964 . There are some points to consider when deciding whether a Magnum engine is the right choice in an engine buildup and when mixing and matching components or applications.

How many HP is a Mopar Magnum?

Mopar Performance's older 300- hp Magnum crate engine was a basic 5.9L Magnum production engine, delivered with a two-plane intake manifold, a car oil pan, and conventional electronic ignition for retrofit applications. The rest of the hardware is the same stuff found in hundreds of thousands of these mills installed in truck applications from '93 and up. How do these Mopar Magnum 360s respond to mods? We loaded one onto the dyno at Westech to find out.

How much lift can a Magnum cylinder head hold?

While normally we like to make such changes on the dyno one piece at a time, the production Magnum cylinder heads are limited to just over 0.500 inch of lift before they encounter disastrous retainer-to-guide collision. This precluded shoving our hot high-lift Comp hydraulic roller in place while retaining the stock heads. To keep the stock heads, the valve guides need to be machined down and new seals, valve-springs, and matching retainers installed. Fortunately, a set of Edelbrock Performer RPM Magnum cylinder heads were also part of our upgrade plan, and these are capable of swallowing 0.580 inch of lift as equipped from Edelbrock. While the head swap is certainly possible without changing the cam, it seemed ludicrous to run the upgraded heads with the 0.385/0.401-inch-lift stock truck cam. With the Magnum's stock, dished pistons, the compression ratio was 9.0:1.

What is the difference between a Magnum and a LA engine?

In terms of ultimate power potential, the LA engine has a clear advantage over the Magnum. With the shaft-mounted rocker arrangement of the LA series, offset intake rockers can be readily utilized to dramatically increase the available intake-port cross-section at the pushrod restriction. This is a major consideration in very high-output applications. The offset rocker arrangement was used by Chrysler in the '70 T/A cylinder heads and subsequent Mopar W-series race heads, and is used by aftermarket manufacturers such as Indy Cylinder Head. The stud-mounted Magnum heads are not supported by available offset-intake valvetrain arrangements. This limitation becomes an issue at approximately the 500-hp level, though fully ported Magnum heads are capable of exceeding this output.

What type of oil pan does a Magnum use?

Oil Pan Interchange. At the bottom end, the Magnum engines all use the LA-series 360 rear oil-pan relief. Any 360 oil pan will bolt to a Magnum. However, a non-Magnum pan cannot use the Magnum one-piece oil pan gasket, as the early LA-series pans are notched at each side of the rear relief, while the Magnum is not.

How many valve covers does a Magnum have?

Some aftermarket intakes are double-drilled to fit either engine. The fasteners and gaskets are also unique to the engine series. Magnum engines have 10 valve-cover fasteners compared to five on LA-series engines and utilize a superior steel-reinforced rubber gasket.

How does a magnum work on a Mopar?

The Magnum system utilizes rockers that are individually mounted on paired pedestals. Oil to the rockers is provided through the pushrods via the lifter, much like a small-block Chevy. The Magnum rockers feature a ratio of 1.6:1, providing an increase in valve lift of almost 7 percent, compared to the 1.5:1 ratio used on the LA engines. Early Magnum blocks still came through with the oil passage for the LA-style valvetrain oil feed, which simply terminates at the heads' deck. Obviously, the heads did not have a valvetrain oiling provision. These blocks can accept either LA or Magnum style heads interchangeably. Later magnum blocks still carry the boss for the oil provision, but are un-drilled, precluding traditional heads from being installed without modification.

What is the difference between Magnum and OEM?

As noted earlier, the major difference with a Magnum package is the valvetrain. Naturally, Magnum specific rockers are need. The OEM rockers are actually a very good design, suitable for milder street performance applications. The aftermarket also has rocker kits, available from sources such as Crane and Comp Cams.

Do you need a magnum valve cover for a magnum head?

Magnum valve covers are needed to work with the Magnum heads, since the number of attachment bolts are doubled for better sealing. OEM valve covers are a decent choice, but for a little more flash, Mopar Performance carries nice cast aluminum covers. The swap to a Magnum top-end is really a bolt-together deal on an LA engine, which shouldn't be too surprising, since that's the way Mopar essentially did it in the first place.

Is the Magnum crate engine interchangeable with the LA engine?

Magnum engines did, however make some inroads into the traditional performance world, thanks in part to the direct interchangeability with the earlier LA engines on which they are based. Mopar Performance offered the Magnum crate engine for years in performance trim, and these engines were fully interchangeable with the earlier units.

Does the 340 Magnum have the same oil pan as the 360?

With the Magnum, the 5.2 was standardized to accept the same pan as the 360.

Do you need a magnum intake manifold?

With the Magnum's vertical intake mounting pattern, a Magnum-specific intake manifold is required . There are those who have gotten around this problem with custom modifications to change the bolt pattern on the Magnum heads, or revising the intake bosses. There are several good aftermarket choices in Magnum carbureted intakes, making bolt-on manifolds readily available. Mopar Performance has both dual- and single-plane intakes available for the Magnum heads, and Edelbrock has recently introduced their excellent Performer RPM Air Gap for this application. Professional Products has a manifold that has a dual bolt pattern, which fits both Magnum and traditional LA heads. You'll need to get intake manifold gaskets for the Magnum application, to match the revised bolt pattern.

image
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z 1 2 3 4 5 6 7 8 9