bbooda94

Hi, this is my first post!

I have a 93' mustang lx hatchback.
I have gt-40 heads (not gt-40p), gt-40 intake upper and lower, cold air intake, 65mm throttle body, h pipe, full length headers, and flow master mufflers.... I was wonder how much horse this will roughly give me and how much I'll be looking at for total horse

Also are there any more easy bolt on or delete kits to gain some horse?

All comments are appreciated!

Glenn

I don't have an answer on your hp question but maybe a suggestion or three. Under drive pullies, weight reduction and a set of rear gears may help a tad.

Glenn

oh and welcome to TMS glad your here. Your ride looks pretty good

skunk21

about 260-270 to the wheels so a around or 300ish crank. It takes a good set of aluminums and cam to get 300rwhp n/a . Then a stroker or 351 to move up more and stay N/A. The easy part is getting it close and to 300rwhp then the wall comes.

Like Glenn stated next thing would be a good set of rear grears to improve the acceleration/pull. 5spd 3.73 or 3.55, auto 4.10. enjoy the car you have a nice street motor and with gears will feel real nice .

welcome.

bbooda94

The 93 is rated 225 stock, correct?? I have been reading that the heads intake and can with give me 40 horse or is this an over exaggeration? Also, am I really only looking at a 50 Hp gain for all of the bolt ons? I read the full length headers gives it a big difference?

Thanks

bbooda94

What set of gears would you suggest to not lose top end and still gain pull? It's an aod transmission and it has a shift kit in it.

Also does anyone know what gears are in it to begin with

skunk21

A stock 5.0. will dyno at 170-190rwhp there are some factory freaks that have done slightly more. You have picked up more than you think. 1st don't go by advertised numbers and then start adding them all together. either dyno it or ask on a forum.

I have been around these cars for a long time and to be totally truthful it isn't hard to find HP numbers for them. There are so many proven and dynoed combos on the net finding hp numbers isn't hard and calling out BS isn't hard either. GT40 combos are all over the place and my ported E7 heads flow pretty close to the GT40 heads I'm also cammed and we are going to be pretty close hp wise. Like I stated this topic has been covered thousands of times over the years, it is pretty easy to come up with a engine combo for a given hp for a pushrod sbf. sorry you are not pushing 300rwhp with your combo, you would need a good cam and aluminum or better set of iron heads and other supporting mods.

Also you have an auto so take your numbers down to lower side since you have more parasitic driveline loss ( 20-25hp with a 5spd and about 35-40hp with an auto). The auto is better paired with 4.10 gears, your stock gearing is 3.27 so a 3.55 gear isn't going to feel like much at all. 4.10s for starters.

bbooda94

Did you look at the other mods that I put on my first post to the forum , just out
Of curiosity, everything I have is the gt-40 heads, gt40 upper and lower intake, full length headers, flow master mufflers, h pipe, cold air intake, 65mm throttle
Body, and 24 lb injectors

hi5.0

Nice car! Can't offer any real hp building tips, more like "freeing up" what's already there. If you're not experiencing cooling issues/charging issues, underdrive pulleys may eke out that little bit extra hp - but, IMHO and experience, not worth it. A set of 1.7 ratio roller rocker arms (and improved valve springs) could gain a bit more hp. Some claim installing a electric engine cooling fan frees up hp by reducing drag on the engine compared to the stock clutch fan. I've done this, but can't really say for sure. In any case, definitely should upgrade your alternator if you haven't done that yet.
Changing the rear end gear ratio can improve acceleration, but it does not really increase hp. With a stock AOD, 4.10's is the way to go. Can also look into a aftermarket torque converter. There's also modding the AOD internally with 4R70W parts (definitely not easy bolt on) as it gives a better low end response without the penalty of increased rpms at highway speeds. Pair with a aluminum drive shaft for reduced vehicle weight and rotating mass. Having a automatic transmission cooler (plumbed in sequence after the factory one) should be mandatory.
Replace heavy factory hood with a quality fiberglass or carbon fiber hood. Fenders optional. Can also switch to a smaller/lighter AGM battery for more weight savings.
Have fun with your project!

skunk21

Yeah I did. I'm being totally honest in my posting I don't know what else to tell you. If an afr or TW headed sbf with a decent cam and aftermarket intake, 24lb injectors and longtubes etc. is only going to dyno in the area of 300rwhp and a 347 stroker is going to dyno 350-380 to the wheels what makes you think your motor is going to pull down more. I mean really you are in the 270rwhp neighborhood and your putting it down through an auto ( nothing wrong with it) like i stated has more parisitic loss. I'm not trying to be hard **** just real. If you don't agree search it. GT40 heads do not flow like a good set of aluminums unless they have some decent work done to them and even then they are still limited. you have a nice set up, so let me say it again I'm not knocking it. enjoy the ride it is a nice one

bbooda94

I'm not trying to come off as a jack ***, by knocking your knowledge, I just thought it would bring in more.... But then again you have much more experience than I do! So thanks for your info and I'll let your know how it goes when it all said and done!

skunk21

Didn't think you where coming off like anything. some people just don't like the truth and think they have more than they do is all. I didn't take anything the wrong way and I hope you didn't either. I know for fact and how I came up with my numbers a local guy a few years ago at a club meet dynoed on a dyno jet 275rwhp with the following / real '93 Cobra intake, GT40 heads with 1.7rrs, BBK long tubes, ProM maf, 24lb injectors and a B cam. The car now has AFR heads, anderson cam and some other goodies and cleaner tune and redynoed at 293rwhp. He is pretty much in the ball park of what most of the other combos are that out are out there ( and all dynos are not the same plus they always vary). For what it is worth 1.7rr are only a gain of about 4hp or so dyno proven on a stock cam.

bbooda94

Do you think that the 4.10 gears are worth getting

skunk21

yeah