Questions regarding intakes & ecm upgrades for an 86 vic

[86VickyLX]

How much money do you have to play with? This can be accomplished with money.

[mrltd]

You expected 350-375 from a gt40 intake and gt40x heads? Not gonna happen. Those are good for about 250hp.

Will need to step up the heads and intake quite a bit. I would suggest some reading at SBFtech.com and corral.net.

You would also be surprised what 150rwhp more and a bit more tq wil do. You will also be severely disappointed if you don't budget for a trans, converter, and gears.

[Mustang Eddie]

I'm not sure about the Cobra intake, I don't think anyone has ever tried it, but it would be cool if someone made it work.

I've done it.There's plenty of meat on the Cobra intake to drill & tap to put the stud in for the top of the bracket.I then had a small piece of aluminum welded on below which I also drilled & tapped for the bottom stud.Very easy to do if you know someone that welds aluminum.

[Mustang Eddie]

You expected 350-375 from a gt40 intake and gt40x heads? Not gonna happen. Those are good for about 250hp.

You would also be surprised what 150rwhp more and a bit more tq wil do. You will also be severely disappointed if you don't budget for a trans, converter, and gears.

I agree with most of what you say here but I think he's talking flywheel hp vs rwhp.My cast iron Gt-40, Cobra intake setup in my Merc makes 305hp at the flywheel.Gears & converter will do more for you than the trans work IMO.

[Sirus]

How much money do you have to play with? This can be accomplished with money.

I'm willing to put in 3 or so grand into the car if it will give me the numbers and the feel that i'm looking for.

[Sirus]

You expected 350-375 from a gt40 intake and gt40x heads? Not gonna happen. Those are good for about 250hp.

Will need to step up the heads and intake quite a bit. I would suggest some reading at SBFtech.com and corral.net.

You would also be surprised what 150rwhp more and a bit more tq wil do. You will also be severely disappointed if you don't budget for a trans, converter, and gears.

Well as it stands i was hoping that after i got a custom dual exhaust & headers done it'd get me closer. Then maybe i'd swap out the heads & cam for something more powerful later.

As far as the gears go, i was thinking about going with a 3.27 or 3.55 gear, but i was worried about top speed losses.

The converter i didn't think about, what would be good for street use?

As far as the trans i thought because of it's year there wasn't much i could do besides change the governor over to a stang one.

[Sirus]

I agree with most of what you say here but I think he's talking flywheel hp vs rwhp.My cast iron Gt-40, Cobra intake setup in my Merc makes 305hp at the flywheel.Gears & converter will do more for you than the trans work IMO.

I'd love to see that 350 as rwhp, how infeasible is this really? Like i said i'm pretty inexperienced.

I knew it was going to take more than an h.o mod & a good intake & head upgrade, but i was hoping it'd get me at least past 280, am i a little too optimistic?

[Mustang Eddie]

I'd love to see that 350 as rwhp, how infeasible is this really? Like i said i'm pretty inexperienced.

I knew it was going to take more than an h.o mod & a good intake & head upgrade, but i was hoping it'd get me at least past 280, am i a little too optimistic?

You'd have to build a pretty radical 302 to make that kind of rwhp or build a pretty big stroker motor or 351w based motor.IMO the original iron GT-40's are much better than P's & any of the aluminum GT-40's & is also pretty old school.There are plenty of much better heads available these days. HP costs money & on a 3k budget your not going to make 350rwhp unless you find somebodies already done ,proven used engine.You'd need to make about 425hp at the flywheel to make 350rwhp.

[Sirus]

You'd need to make about 425hp at the flywheel to make 350rwhp.

Hmm, well i'll still try to get at least 350 at the flywheel.

What matters the most is that the car get's the get up & go i'm looking for out of it. I may not need to go that far to be satisfied.

I think i'm going to go with the trick flow top end kit with the street burner manifold, HO injectors, 1987 auto HO Mustang computer, 3.55 rear gear, some bbk shorty headers and a custom dual exhaust. Hopefully that will give the car the guts i'm looking for.

[86VickyLX]

Hmm, well i'll still try to get at least 350 at the flywheel.

What matters the most is that the car get's the get up & go i'm looking for out of it. I may not need to go that far to be satisfied.

I think i'm going to go with the trick flow top end kit with the street burner manifold, HO injectors, 1987 auto HO Mustang computer, 3.55 rear gear, some bbk shorty headers and a custom dual exhaust. Hopefully that will give the car the guts i'm looking for.

what heads?

[mrltd]

Hmm, well i'll still try to get at least 350 at the flywheel.

What matters the most is that the car get's the get up & go i'm looking for out of it. I may not need to go that far to be satisfied.

I think i'm going to go with the trick flow top end kit with the street burner manifold, HO injectors, 1987 auto HO Mustang computer, 3.55 rear gear, some bbk shorty headers and a custom dual exhaust. Hopefully that will give the car the guts i'm looking for.

I dont think that''s enough injector. And a stock SD ECU isnt gonna run right. You have to budget another $600-1000 for tuning. I don't know how many tuners will actually tune a SD mustang ECU either. Might want to consider a MAF conversion.

As for the converter/trans.... at least a 2400rpm stall. And if you want to make that kind of power you probably should get a good valve body and get the trans rebuilt... Really sucks putting a nice new converter then wasting the trans and ruining everything.

I've seen so many builds that people do and just give up a lot of performance through a slipping trans and a stock ECU.

[Sirus]

what heads?

The twisted wedge 170's are in the top end package.

[Sirus]

I dont think that''s enough injector. And a stock SD ECU isnt gonna run right. You have to budget another $600-1000 for tuning. I don't know how many tuners will actually tune a SD mustang ECU either. Might want to consider a MAF conversion.

As for the converter/trans.... at least a 2400rpm stall. And if you want to make that kind of power you probably should get a good valve body and get the trans rebuilt... Really sucks putting a nice new converter then wasting the trans and ruining everything.

I've seen so many builds that people do and just give up a lot of performance through a slipping trans and a stock ECU.

Would 24 lb injectors be enough, how will this affect fuel economy?

What kind of ecu would work, how much of a pain would it be to switch over to MAF?

As far as a valve body goes, can i grab a 70 mm throttle body & just use an after market egr plate? I have to drill & tap for the cable brackets right?

Can i do this in steps? or do i have to do all this work at once?

[86VickyLX]

Would 24 lb injectors be enough, how will this affect fuel economy?

What kind of ecu would work, how much of a pain would it be to switch over to MAF?

As far as a valve body goes, can i grab a 70 mm throttle body & just use an after market egr plate? I have to drill & tap for the cable brackets right?

Can i do this in steps? or do i have to do all this work at once?

24lb injectors won't affect fuel economy if you tune it right.

Go with an A9P from an Automatic Mustang 89-93 with 5.0

You have to add a few things to your harness to make it work.
You need to add the vehicle speed sensor wiring up to the computer.
You need to move some wires from one pin to another. And add the Mass air sensor pins to the harness. Other than that it's plug and play

Lol, the valve body is in the transmission.

You can do this in steps. You might have problems you may not.

I'd also recommend that you upgrade your braking system, if you want to make a bunch of power, you're gonna want to stop the car.

[johnunit]

24lb injectors won't affect fuel economy if you tune it right.

Go with an A9P from an Automatic Mustang 89-93 with 5.0

You have to add a few things to your harness to make it work.
You need to add the vehicle speed sensor wiring up to the computer.
You need to move some wires from one pin to another. And add the Mass air sensor pins to the harness. Other than that it's plug and play

Lol, the valve body is in the transmission.

You can do this in steps. You might have problems you may not.

I'd also recommend that you upgrade your braking system, if you want to make a bunch of power, you're gonna want to stop the car.

QFT

Don't try and do it all in one. If you're new to this stuff (like I am) you'll risk hitting a point where you've got the car in a million pieces and you don't know where to start getting it all back together. Plus, you'll have to save up for ALL the parts before you get to enjoy any of them.



If you need an extra set of hands or some recommendations on where to buy stuff or have stuff done, I'm in Scarborough and just started working at a custom/restortation shop in Markham, so I may be able to help you out.