swap?

[whitefang98]

hey guys ive been thinking about what to do to my mustang and considered an m90 swap and some other stuff but i think i might be settled on an idea. what would u think if i swapped my 98 3.8l out with the later split port engine models. i would then rebuild that split port engine and put a used procharger on it? i know the split port v6 have around 190 hp compared to the 150 single port models and i think afterwards ill have close to what 270hp? this is just an idea right now but let me know what yall think. it would deff be a good project but how much do u think its going to cost? im hoping to find a wrecked 99-03 and grab the engine out of that for hopefully 500 and get a used procharger for around 1000? does this seem reasonable or is there something better to do? thanks for yalls time!

 

[justinschmidt1]

I would prob just do an m90 on the singleport.

Otherwise be prepared to spend like 3k and probably not be any faster.

 

[whitefang98]

m90s only give up to 230 hp though. a stock v6 edge models give 190 base and with a supercharger thats at least 270... a procharger used sold on ebay for 1k for an edge mustang. if i can find one like that and get a engine it shouldnt be over 2k.
http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&rd=1&item=200301013784&ssPageName=STRK:MESE:IT&ih=010

 

[justinschmidt1]

Where did you pull that number from?

Focus more on speed rather than numbers anyway.

An m90 singleport with some bolt ons, gears, w/e can run 13s

Im not sure what a split port with a procharger runs but It cant be much faster than high 13s/14s?

Anyway, an m90 and some bolt ons should be able to put down 230+ RWHP and 300+ tq...

 

[Mr.Bolt-on]

M90 is your cheapest option, and you can go alot faster for cheaper... thats for sure. You can easily get close to 300 flywheel horsepower with longtubes, blower porting, and pulley. If you get a stock split port with a supercharger, be prepared to be disappointed because the internals are not forged like the M90's engine. If you plan on building a split port, be prepared to be even more disapointed, because the cost of the supercharger+ the build is not worth the money in my honest opinion. If you plan on going that far, just get a 302, and build it for much cheaper than a V6, plus you will have about 100 more horsepower, well maybe 180+ hp if you add a supercharger.

Remember, when doing an M90 swap... NEVER put just the supercharger on your stock single port, that would be extremely pointless, do the entire engine swap.

On another note: you will blow a headgasket on the M90 if you do not geat some sort of headers, and full exhaust. The stock (turd like) linkin log headers are the weakest link for the M90. I have read that you can expect a 75 horsepower gain with a full exhaust (headers), and pulley.

 

[whitefang98]

yeah if i do a m90 swap instead i would deff buy a super coupe engine with the m90 and just do the whole swap... thats for the info though

 

[MadStang]

Where did you pull that number from?

Focus more on speed rather than numbers anyway.

An m90 singleport with some bolt ons, gears, w/e can run 13s

Im not sure what a split port with a procharger runs but It cant be much faster than high 13s/14s?

Anyway, an m90 and some bolt ons should be able to put down 230+ RWHP and 300+ tq...

That number is actually low. Most 7psi procharger kits for the 99-04 mustang stock put out about 280rwhp/rwtq. Hell even the less efficient vortech puts out about 260rwhp/rwtq on a stock mustang setup. If you get the 11psi or 13psi kits you'll be well into 300whp range.

Stock 99-04's with procharger and street tires with a 5-speed will run high 13's all day with the 9+ psi kit. With gears and other bolt-on's low 13's, high 12's are possible.

The best bang for buck is the Procharger. It's not 14 year + old equipment from oem Ford and is backed by a warranty from ATI if something goes wrong. It's much more efficient than the m90 and much less of a hassle for install. Even if you were to pick up a running block, there are ALWAYS quirks to work out and I like to run a motor that I know exactly how it reacts, which, is exactly why I'm running the stock block with built internals. I know what my motor can take and how it reacts to certain inputs.

M90 is your cheapest option, and you can go alot faster for cheaper... thats for sure. You can easily get close to 300 flywheel horsepower with longtubes, blower porting, and pulley. If you get a stock split port with a supercharger, be prepared to be disappointed because the internals are not forged like the M90's engine. If you plan on building a split port, be prepared to be even more disapointed, because the cost of the supercharger+ the build is not worth the money in my honest opinion. If you plan on going that far, just get a 302, and build it for much cheaper than a V6, plus you will have about 100 more horsepower, well maybe 180+ hp if you add a supercharger.

See my above response for the heaton m90. Easily get to 300hp with lt's, porting and pulley? Porting alone is going to cost you an arm and a leg for the blower. And the M90 is by far not the cheapest and not even close for the bang for buck either. Finding all the parts that are actually needed for the swap is difficult in itself. And swapping an old motor into a car that is newer is also another pita. Trust me, avoid the M90 if at all possible.

Why would he be disappointed with the performance of the stock split port? They're rated to 400bhp. He can safely run 350bhp with no problems either. Using a 9 or 11 psi kit will put you at around 300whp with a solid tune. I think that's the bang for buck especially when the kit can be done and installed for $2k including gauges (wideband, boost, etc.) And he will not be disappointed with the performance of a built split port either. No one has blown up forged internals from many of the companies that sell performance blocks and they're running insane amounts of boost. The fastest v6 mustang, is running 30psi and it's still running strong. The 3.8 block itself is ridiculously strong and with internals and head gaskets made for boost they're virtually indestructible if you treat them correctly.

Personally, I like that I built my v6 rather than buy a GT. It's much more rewarding, especially on the autocross track when I'm scooting right by GT's with more power. I provide embarrassment.

 

[whitefang98]

thanks yeah i was interested in the m90 swap at first but im deff going to do the split port swap with a procharger and tune... yeah i plan on getting around 300hp and probably get the tune from vmp.

 

[MadStang]

thanks yeah i was interested in the m90 swap at first but im deff going to do the split port swap with a procharger and tune... yeah i plan on getting around 300hp and probably get the tune from vmp.

guarantee you won't hit 300hp with a tune from justin. His tunes are preset to what other 3.8's have run and he'll do what is called a "safe tune" so he isn't responsible for blowing up your motor. What you'd have to do to get a solid 300 is a dyno tune, it's only way, other than datalogging, to get an accurate tune.