what are your thoughts?

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i recently bought a 1991 lx. It has a 5.0 with 44,000miles. it is a stock block with a t-trim supercharger,60lbs injecters, 75mm throttle body with 80 mm mass air and 2 fuel pumps.  it use to have a 351 but the guy i bought it from blow it up at the track and knowing he was going to sell the car he found a 5.0 with good miles and used what ever he could from the 351.  how much hp can you run on a stock block? i was thinking a mild cam, heads and a intake but not sure if the motor can handle it.  what would you do with this set-up? i want to keep it a steet car and every once in a while take it to the track.  

the 1991 5.0 was a pretty good engine it came with forged pistons as I recall, but if you were going to add much more horsepower I personally would recommend forged rods and at a bare minimum some arp wavelock rod bolts.  plus a high volume oil pump and aftermarket oil pump driveshaft. and if you want a little more security a main support system is not that expensive.  with those mods you should be able to blast down the 1/4 periodically with confidence.  anyone else have any suggestions?  

I've been in the same situation. I just pulled the mild 306 from my 88 LX and I was going to change cylinder heads, cam, intake, and blower in an attempt to make over 600 rwhp. Although it is possible, anything over 500 rwhp with a stock block is pushing the limits of what the casting can hold. I decided not to use my 306 to make big power because there is no reason to destroy a perfectly good short-block.

For a street/strip combo I would keep it simple. FRPP has all the parts you need to make more then enough power on the street. I've used the GT-40x aluminum heads with an E303 cam and a Cobra intake and the result is a great driving, powerful car that was extremely enjoyable! I don't know if I would use a T-trim on a stock block but that is my personal opinion. If you can get your hands on an S-trim that would be a perfectly matched set-up for a serious street/strip Stang!

Good luck!

Pete Epple  

Gaskets - make sure you have the right gaskets w/blower.  

how much hp is a t-trim supercharger capable of making?  i am fine with 500 rwhp or a low 11s of high 10s car. what would it take to get there.  i would like to here some of your set-ups.  it is more important for me to have a reliable pretty fast street then an unreliable very fast race car.  

We have a T-trim on an '01 GT. with a 5-liter stroker mod-motor it made 675 to the wheels with 12 pounds of boost. The T-trim is definitely capable of making all power you'll need, the problem you're going to run into is you'll definitely be pushing the limits of the stock block if you have an aftermarker cylinder head and a good cam designed to work with a supercharger.

what is your budget for the project? If you know how much you want to spend it will be much easier to make suggestions on combinations.

Thanks,

Pete  

i have the time so the money if not that big of a deal. the car runs good so i can save up and still drive the car.  a friend of a friend had a block from a 94 cobra that i said he will sell to me i was thinking of buying it to build from the bottom up.  where is the best place to look/buy a stroker?  i would like the car to be a high 10 to low 11sec car. what would i need to get there?  

thanks for your help  

The current issue of MM&FF is all about strokers! There are a bunch of great tech stories and even a buyers guide with almost 30 companies that make and sell stroker kit and complete engines. That would be a solid place to start if you're looking for information or somewhere to buy a kit. We've already done the research for you!

Just remember...  Most stock blocks are good till about 500 rwhp. Once you get there or over that point I would strongly consider thinking about an aftermarket block.

Thanks,

Pete  

Are you running a stock block w/blower on 60lb injectors? How does that idle?

I ran a 306 w/5 lbs vortech w/methanol on 24lb injectors and pushed 412 rwhp.
like an idiot, I swapped out the 24's for 42's and my drivability went down until I put a computer on it and run it that way. Plus, I had to add a second pump. I took off the methanol and it runs about 335 rwhp. A little more manageable on 245/45/17 tires. I am not dragging mine so I do not have slicks and the 412 would not stay on the pavement.

That is why I was wondering about your idle.

As someone mentioned, get the right gaskets w/forged internals and a strong tranny.

Have fun, let me know about the idle-mine idles fine w/computer to regulate the fuel better.  

I have a 1990 5.0 GT ,I installed high flow cats and mufflers , shorty headers , MSD Dist, stock mass air , 70 MM TB, Cobra intake , 24 LB injector`s ,BBK cold air intake , when i started the car it would not idle ,it revs up to about 1800 RPM then back to idle ,1800 RPM back to idle then dies .
and it pop`s back into the intake i set the T,P,S .
Can any one help
James  

Did you go to a shop and have your computer recalibrated for your change in injector size and other mods? A stock mass air is only calibrated for 19lb injectors, so your problems could be coming from your change in injector size.