Have a new guy at work and has been showing off his 89 Mustang. Me being me I just followed the crowd and acted like a dumb spectator and asked what has he done to it. He said exhaust, cold air and intake with a tune. It does sound pretty nice I must admit.


My cover was blown when he notcied the Yank Converter sticker on my DD. I told him about my project and of course the instigators (Co-workers) brought up the question about which would be faster. I turned it down by saying its not finished and don't plan to rush it.



I did wonder, how fast the fox would be? Be being me I looked around and from what I see he lied about his intake since it looks exactly like what comes up online for a stock foxbody.

As far as my Bird. All that is left is suspension. I plan to keep her the way it is til this upcoming winter.

97 LT1
-Solomon (LT1Pcmtuning) Power Tune
-52mm Throttle Body
-Slp 1 3/4 Shorties to Gmmg.
-Yank Ss 3600
-3.27 Posi
-Weight around 3000-3100 (Base Firebird)


I know I will prob take a bolt on fox body but really don't know how fast a bolt on one can be. I plan to just ignore it, just had me wondering though.

 

Maybe low 14's but it's really hard to tell without knowing if it's 5 speed or auto, bolt on only or internal work, etc. You will most likely take him with the right suspension setup. I take it you didn't get the long tubes, I've been trying to get a hold of you about the SLP's.

 

I'm pretty sure your LT1 has him. I wouldn't be too worried.

 

Without knowing if the Fox is a manual or a auto its hard to give an accurate ET however based on my experience the avg. 5.0 manual bolt on can run mid to low 13s close to sea level. Autos with a real stall are about 3-4 tenths slower.
My current Lt1(in sig pic) is a bolt on minus elec. waterpump runs 12.9-13.0 at 3000' DA, i also have a crappy clutch, stock suspension up front and LCAs out back at the time of the run in pic. My car weighs in at 3580 w/me in there. You should have no problem motor for motor........

 

Stalled, bolt-on LT1's should be in the 12s on a good street tires. With a DR 12's should be all day long.

What are you trapping?

The Fox Bodies main advantage is that they are several hundred pounds lighter than their F-body counter parts.

But a stock LT1 should take a stock Foxbody all things being equal. With bolt-ons it should be a similar story.

ANY stalled auto should be significantly faster ET wise thanks to the torque multiplication and power delivery a good stall allows for. Add sticky tires into the equation and while the Trap speed won't go up much, the ET will go way down. If my car had a stall and DR I'd be 12's all day long.

My car has a Buick roadmaster drivetrain and the stock stall is designed for a 4000lb+ car. In a car over 500lbs lighter the stall tends to flash much lower. By 1200rpm on the line with a foot-brake I'm overpowering the rear tires. 1200rpm is as high as I can launch the car, and it still goes 13.3's all day long, even when being driven 160 miles to the track.

Have you weighed your car? What weight loss have you done to get it around 3100lbs. The reason I say so is because V6 Firebirds were about 3150lbs, so for your V8 car to be around there you'd have to have stripped out some equipment.

 

Dude, I have a 91' bolt on Mustang GT with headers, intake, auto trans with 2500 stall, ported tb and maf, catback with no cats and gear. I can woop it bad with my 92' BMW 525i that has full bolt ons on a 2.5 I6. Yes the fox body is light, my gt is 2950 with everything in it but the 302 just don't have the low end that the chveys have and the stock heads only flow 155 cfm. If that car is a auto you can spot him 10 cars and beat him by 10 if you don't spin (5 if you do lol). If its a stick on street tires then you can spot him 10 and still kill him. Just a stock LT1 with a 3000+ stall and traction will kill most bolt on stangs in the real world.
You have nothing to worry about let that bird eat and post the vid when she's full!

 

A LT1 in a 3100 pound F car will destroy a Fox that has no internal engine work, assuming traction is available.

 

There were a few threads like this in the past and some fox guys came in showing mid high 12 second slips with bolt on LX fox body cars. All 5 spd cars tho, but some of these cars can move pretty quick since they are fairlyl light but most should be mid lower 13's.

My friends bolt on LT1 4th gen went 12.96 at 106 on street tires with stock auto/stock stall, 3.73 gear....1.9x 60 ft in gooood air quality. In a thirdgen at 3100 lbs or so, it should be mid 12's with 3600 stall and drag radials/slicks with good air quality. SHould beable to take the fox.

 

Yeah thats at the track. If they do it on the side street (which you shouldn't be doing) then that fox body stick (if it's a stick) will just burn rubber. Even if he leaves with the fox all he has to do is poor on the gas and watch the fox fade away. When I grudge race I don't count on a persons best time slip as what they will do against me. They can run 9.5s and i run 9.7s but if I tree them by 4 tenths then guess who will when. Don't be affaid of that stang. Go get em!

 

my friend (86 GT , DR, Full exhaust 5speed) went 14.0 flat basically bone stock in good air

i went 14.2 in my 94 Z28 with a stock stall, shift kit trans on street tire in 90 degrees / humid air at the same track. I also had a rusted out catback and 170K miles lol

you're combo sounds like a mid to low 13 sec 1/4

depending on his "boltons" you could own him or it could be a good race

I say that because my friend turbo'd that 86 and he consiters it a "bolton" lol

 

my friend (86 GT , DR, Full exhaust 5speed) went 14.0 flat basically bone stock in good air

i went 14.2 in my 94 Z28 with a stock stall, shift kit trans on street tire in 90 degrees / humid air at the same track. I also had a rusted out catback and 170K miles lol

you're combo sounds like a mid to low 13 sec 1/4

depending on his "boltons" you could own him or it could be a good race

I say that because my friend turbo'd that 86 and he consiters it a "bolton" lol

If that gt had street tires like you then he would have ran slower.

 

low 13's with a full bolt on fox body is pretty good. makes me look at them differently. haha

 

Depends on what you call bolt ons. They don't go too fast with those stock heads unless they drop some weight and gear the hell out of them with slicks and a stick. Once they do the GT40 heads/Intake or better then they start to fly.

 

As fast as teaching an old dog a new trick with no treats on a hot sunday afternoon with still the lawn to cut and church/cult to attend
agreed, GT 40 heads are good for 12 sec 420+hp easy, easy to spot though.

My 84 Z28 with LT1 (stock-headers) auto(shift kit) did 13.43 in tampa 6ft above sea level NO TUNE. It had weight reduction but im sure that the SFCs made up for that.

low 13s is not a impossibility. he would have to have alot of money or know what he is doing.

 

its funny how most will claim that the 5.0's ran circles around 3rd gen fbodies but a full bolt on L98 with slicks/stall will go high 12's too.

 

yeah thats impressive too. I just want a 13 second tbi. .24 seconds to go from my fastest time to go...

 

Just race him and see. I've raced and beat a single turbo 3 series BMW 2.5 I6 that was running 16 PSI, I consistently took ninetyone's L98 Firebird (Although it put up a good fight and pulled to nearly 130 MPH right with me) and I've lost to a seemingly somewhat slow Nissan 240SX with a turbo SR20 swapped in. That was a race of traction for me. If I would have been able to launch at or above 3K and hook, I would have took it.

And this was in my 2001 GT. From the oil pan to throttle body, including manifolds, it's a 100% stock 4.6. Just a CAI, email tune, an exhaust, gears. I'm just a decent driver I suppose.

Otherwise there will be 30 more interweb racers (Except the few knowledgeable guys above who actually know what they're talking about) who will say that your car will win without even being clear on the specs of the other car.

I know some of the 5.0s can be dogs after years of being abused, but some are kept up and have some tasteful mods and a good driver behind them..

 

lol foxbody = slowwww. i had one. all torque. it was like 175 hp 300 torque.good for off the line but after that say goodbye. i had heads intake gears and exhaust and a few more extras and an lt1 would still walk on it. just race him and show him whos daddy!

 

While stock power levels in the 5.0 aren't exactly impressive, it's the gearing in the 8.8 that kills it. I've seen some quick 5.0's with just an exhaust and a set of 4.10's in the back. Throw on a set of GT40 or GT40P heads and you've got a formidable runner. My 88 GT was fun to drive, but the gearing was just God-awful making it lazy completely stock. Having an AOD (+ the additional weight from it) in the car also doesn't help any and that's why almost all the "fast" ones have T5's in them. If your car is running good and he's being completely honest about his car - I think you've got him. You never know, though.

 

Its an auto. Nothing besides exhaust, some cheap looking cold air and a "tune".


He doesn't know much about the car, he says he bought it 5 months ago. So far from what I can see I have no problem taking him. I didn't bring it up but it seems me knowing more of his car made him keep things to himself.

 

GT40 heads making 420+ HP?? Those have got to be some pretty severely ported GT40 heads. 420 HP on a 302 cubic inch motor is a hard enough task as it is but with GT40 heads, your really pushing it. I have never seen a GT40 headed 5.0 make over 310 RWHP which isn't even close to 420 crank.

And as for the OP, this guys foxbody will be low 14's if he's lucky with a slushbox for a tranny and only a catback. You will destroy him with a modded LT1 swap. Happy hunting.

 

^^^^That's what I said. He will kill that car hands down.

 

GT40 heads are the same as explorer heads. Did they make 420 hp? - NO

it took a turbo and supporting mods for my friends to put down 420ish wheel horsepower (he had E7 heads, and all supporting mods). And yes its built right.

H/C/I = maybe 300 hp on a 302 without tearing into rotating assembly

and low 14's as long as he isnt sandbagging

 

GT40(P) heads came on the explorer but are the same (needs certain headers to fit tho). Guys can make good hp (350+) with those heads and intake. Most of the guys who do that swap get the heads milled for more comp and do some basic home porting of the intake a heads. There are a couple of forums that you can check out to see what mods do what. When it comes down to it, that LT1 makes power and if the car is light and traction is good a basic fox won't have a chance.

 

Let's see...I'm not the best driver, but not the worst. My bone-stock 1989 GT 5-speed with 70K mi ran 15.0ish at Atco when I first bought it. Full tune up with timing adjust ran a 14.7ish. Added 3.55s with sticky tires = 14.5s. Did full-exhaust, CAI, 65mm TB/EGR plate, pulleys, AC delete, back-seat delete, King Cobra clutch, replaced Quad-shocks and ran 14.1ish.

The car eventually went 12.9s with heads, a mild cam and some suspension work before I sold it. Fact is, the original 5.0s were quick for their era, but the exaggerations are rampant.

 

A bit off topic, but
whoever wins it's still a fn ugly mustang lol

 

AMEN!

 

I do admire everyones story of "back in the day", of "My home buy had those five point oh, and that beotch was faaasssst"

Im like,"You dont know WTF fast is..."

 

i aint be havin no homiez with 5.0's caus' I don be likin 'stangs

 

No chance he is low 14s with an automatic and just exhaust unless the car is gutted with a serious stall and suspension work. I'd say he is looking at high 14s to mid 15s depending on the Fox's condition and tune.The old 5.0 was rated at 225/300, which translates to about 180rwhp with the crappy AOD tranny.

 

So he has basically exhaust and some fancy CAI(not sure how much power can be gained going with a new tune, getting away from the stock tune).

I see absolutely ZERO reason you should lose unless A) You can't drive worth a damn. B) You spin the tires due to reason A. C) You have a seizure behind the wheel or D) All of the above, all happening at the same time.



Enjoy the win.