[gumcrew2]

Hey everyone, I just picked up an XJ with a 5.0L Mustang V8 and manual tranny. The body is trashed (rusted, banged up, but fixable) and the interior is destroyed but DAMN it's fast. I haven't gotten it to the track yet but I'd guess it's running mid 13's.


Well, just wondering what you would do to tweak even more Hp out of that engine. I'm thinking injectors, intake manifold, and a cam.

[XBlackJ]

Twin Turbo

[groovyone]

There are TONS of 5.0 parts that may work. Got any pics of the setup?

[Drew M]

Since when did mid-13s become "fast"?

I am guessing you have a lot of friends with Civics. :-P

[XJ4oh]

If its a stock 5.0 I dont think its in the 13's yet.

The most HP a stock 5.0 Mustang got was 215/220 or so... and thats bolt on range for a 4.0. They do have around 300 ft lb. of tourqe though.

There is a HUGE aftermarket for 5.0's though, pretty much the largest aftermarket for an engine aside from a small block Chevy in my opinion.

I wanna see some pics too, id be interested to see how it sits in there.

[Rock Kustoms]

Originally Posted by XJ4oh

If its a stock 5.0 I dont think its in the 13's yet.

The most HP a stock 5.0 Mustang got was 215/220 or so... and thats bolt on range for a 4.0. They do have around 300 ft lb. of tourqe though.

There is a HUGE aftermarket for 5.0's though, pretty much the largest aftermarket for an engine aside from a small block Chevy in my opinion.

I wanna see some pics too, id be interested to see how it sits in there.

high 14's....

[tdbutler]

mid 13's became fast when he was talking about a jeep. i'm more of an offroad guy, but have had my runs in sports and muscle cars. a good friend of mine had a 5.0 stock engine put into a 99 mustang with a 5 speed. stock aren't the best, but as everyone knows they have high potential to be. someone posted earlier, twin turbo. blow off and downpipes. also, with the turbo, re route it and put on a boost controller. you'll only need about 5 pounds on with a 5.0l v8.

[XJ4oh]

Originally Posted by tdbutler

a good friend of mine had a 5.0 stock engine put into a 99 mustang with a 5 speed.

Why did he do that? Was the car origionally a V-6 or did it have a 4.6 in it?

If it was a V-6 that makes sense, but the 4.6's are also a good engine... Forced induction is VERY common with them.

[Drew M]

Originally Posted by XJ4oh

but the 4.6's are also a good engine... Forced induction is VERY common with them.

5.0L > 4.6L 2-valve

5.0Ls are cheap, bulletproof and respond better to mods for less money. Not to mention the fact that for every one aftermarket part option for the cammer there are 6 equivalent options for the 5.0L.

On the other hand 4.6Ls are finnicky, tempermental and don't net the power gains from mods that the 5.0L does.

[tdbutler]

precisely

[anony91xj]

Originally Posted by Drew M

5.0L > 4.6L 2-valve

5.0Ls are cheap, bulletproof and respond better to mods for less money. Not to mention the fact that for every one aftermarket part option for the cammer there are 6 equivalent options for the 5.0L.

On the other hand 4.6Ls are finnicky, tempermental and don't net the power gains from mods that the 5.0L does.

Ummm....no. Define "finnicky" and "tempermental".

I have a stock 4.6 SOHC (just a few bolt-ons, stock engine), and I run mid-13's, which is about the same as a Mustang with a worked 302. Last summer I raced a Fox hatch with a 306 (5.0 bored .030 over), heads, cam, headers, etc etc. I beat him by a nose.

Ford's 4.6 OHC engines are some of the most underrated and underestimated engines out there IMO. The only advantage the 5.0 has is that the performance parts are WAY cheaper. The SOHC and DOHC 4.6's actually respond better to mods, especially forced induction. Heck, a set of longtube headers alone can be worth as much as 22-25 rwhp on a stock 4.6 SOHC, it's been shown time and time again on dynos.


The only way putting a 5.0 into a 96-04 Mustang makes sense is if it was originally a V6. Then the 302 swap is a LOT easier than a 4.6 swap.

[Drew M]

Ummmm . . . yeah.

Oh and I have a stock 5.0L with just a few bolt-ons and I run mid-13s so check your facts Ace.

I Got 45 DYNO-CONFIRMED HP out of a set of long-tubes and an x-pipe so I'll take my 45HP gain on the 5.0L over your 22HP gain on your modular anyday.

And for the record - I never said the modulars were bad motors. What I said was the 5.0L is BETTER than the SOHC 4.6L - which it is. Period.

[LEAD_NOT_FOLLOW]

Originally Posted by Drew M

What I said was the 5.0L is BETTER than the SOHC 4.6L - which it is. Period.

Who cares, they both suck!!!

[XJ4oh]

Ehh... allright heres my take on the 5.0 vs. 4.6 thing.

First off... im 100% nuteral in my opininon on both of these engines...

Before I got my 2000 GT, I wanted a Fox Body or ESPECIALLY a 94/95 5.0 GT.

I had driven a few 96-98 GT's and I will flat out say that it isnt the engine to start out with if you want to spend a little money to go fast. Why? The non PI heads are the biggest restriction on that car. In 99 the GT's got the PI heads (PI = Power Improvment) and got a nice bump in HP and tourqe.

The old 5.0's in the Fox Body's werent rated high in power, right around 215 or so but if you had a notchback Mustang with a 5.0 and a 5 speed you could run that thing WELL into the 13's with GOOD traction dead stock... but the car is the lightest you could get. The other Fox's werent bad either, the GT's being the heaviest.

Anyway... If you are talking 5.0 versus non-PI 4.6 I would go 5.0 for many reasons. They are both the same pretty much in stock form power wise, but the 5.0 is cheaper to mod at this point.

5.0 versus a PI 4.6 is a tough one. The PI 4.6 has a good edge on HP and tourqe on a 5.0 at this point... but the 5.0 is still cheaper to mod. I like both engines though... I think it comes down to a personal preference of OHC or Pushrods. I love both engines, the 5.0 for its simplicity and cheapness, and the 4.6 for its will to freely rev and its design. Both engines are very durable, but overall im gonna go with the 5.0 on total reliability. The stock rods are the weak point in a 4.6, so you gotta be careful with forced induction on a stock bottom end... aside from that they are both great.

Now if we move onto the DOHC 4.6's... That is one SICK engine. 300 N/A hp in the older Cobra's, respond VERY well to mods, rev pretty high for a production V-8 and so much more... Ah, and they are hand built engines in the SVT cars.

Now the Supercharged DOHC 4.6 in the new Cobras are just insane. They come handbuilt from SVT with fordged internals that will handle alot of boost, again they rev really high, and with just a couple of mods they will make 500 hp+...

But both the 5.0 and the SOHC/DOHC V-8's are great engines... it really depends on what you want to do with them. I like my 4.6, but would also just as easily go buy a 5.0 Mustang.

Dunno wtf that has to do with Jeeps, but I felt like speaking... haha.

[JBassXJ]

Originally Posted by XJ4oh

Dunno wtf that has to do with Jeeps

My thought exactly , but I have learned quite a bit, especially since I wanted an old police interceptor before the jeep. Always did wonder if the 4.6 was good as or equal w/ the 5.0.