what is the difference between

[99mustang]

a 93 5.0 engine and a 94-95 5.0 engine? I have been looking and they make superchargers for both?

[Slush]

The intake has the elbow in front of it for clearance.

[Slush]

The engine harness is not compatible with the earlier computer harness, also the processor (computer) has a different pin layout. Nearly all of the connectors are of a different "design family" and will not mate the earlier more common connector types. To complicate things even further, the EGR is externally fed, and this will undoubtedly create a problem configuring the exhaust system. You must have the EGR system in place and operating to prevent detonation. The 86 to 93 Mustang intakes have the EGR feed internally routed through the lower intake manifold, so there is no need for external plumbing. Probably more importantly, the 94, 95 and crate engines have a different timing case cover, water pump and must use an electric cooling fan. The fact that these were in production for only two years in the Mustang also makes it much tougher to find salvaged parts, compared to the 8 year span of Mustangs that all used the "previous series" of front dress/brackets and accessories. Without question, for all swap applications, the 86 to 93 intake and engine accessory pieces are the ones to get for your swap. What all this means is if you get a good deal on a 94, 95 salvaged engine, or if you choose to start with a crate engine; just be prepared to dispose of some of the pieces that you will not use in addition to the labor to change these parts.

[Black01GT]

it would probably be a good idea if your set on a used 5.0 to get an early 92 back motor...they had forged pistons and good rods.

[JD]

Also bear in mind that the 93-95 pistons are hypereutectic (glass-jawed) rather than the forged units that came in the earlier shortblocks.

[99mustang]

so i should get parts for the 86-93 5.0 since i'm wanting to buy T's cobra intake

Do they have the same engine mounting points so it will fit into the sn95 k member like the 94-95

[JD]

so i should get parts for the 86-93 5.0 since i'm wanting to buy T's cobra intake

Do they have the same engine mounting points so it will fit into the sn95 k member like the 94-95

Mount points are the same.

[shock6791]

it would probably be a good idea if your set on a used 5.0 to get an early 92 back motor...they had forged pistons and good rods.


Keep in mind that these are not identical to the aftermarket forged internals. Here is a good post on it that I saw on Corral.net:


I love these piston posts. There is so much B.S. flying around it's incredible. First of all, pre '92 H.O. engines (mid year '92) had different pistons than later models. These pistons were termed "forged" because of how they are manufactured, as well as the silicon content of the piston. They are NOT the same expensive forged pistons you buy from aftermarket companies. If you talk to anyone who knows a lot about engines and metals, you will get an earful about how 5.0 mustangs never had forged pistons, meaning true forged pistons.

Hypereutectic pistons are not formed in the same manner as forged pistons, but this isn't the reason they are called hyper. The term "hypereutectic" means that the mixture of silicon in the aluminum exceeds the eutectic point. The eutectic point is the exact mixture (12.6% silicon in aluminum) where solidification of occurs completely at the eutectic temperature (around 550 degrees celcius in Al Si), and in turn forms a lamellar structure with optimum dispersion strengthening. With more than 12.6% silicon, the silicon begins to solidify as the alloy cools, but before the eutectic temperature is reached, thus leaving patches of pure silicon despersed throughout the alloy. Silicon is very hard and brittle, therefore not as forgiving as aluminum. The benifit of silicon is that it does not expand like aluminum does, and is lighter in weight. Silicon also has excellent wear characteristics, meaning your pistons will generally last longer with respect to skirt wear.

Hypereutectic pistons are excellent for a naturally aspirated engine. They eliminate piston slap. They are lighter, decreasing rotating mass. I would definitely use them over forged pistons unless I was planning a forced induction engine, or nitrous.

The major benefit of forged pistons is first of all the way they are formed. Under pressure the alloy will have minimal flaws, excellent dispersion of silicon in aluminum, and yield a "softer" alloy that will not crack or break as easily in the event of detonation.

The theory goes further in depth, but a lot of it is very difficult to understand. A basic knowledge of the cooling process versus mixture will help things make more sence. There are lots of people running 150 - 200 shot of nitrous on hyper pistons with no problems. The reason is that they are smart with tuning, have a good fuel system, and haven't had an mishaps. I also know guys who have melted more forged pistons than ice cubes.

Don't the the term hypereutectic scare you, and ignore those who like to spread rumors they don't understand.