What Should it Run? Setting a goal… - Ford Mustang Forums : Corral.net Mustang Forum
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Old 10-05-2018, 02:27 PM Thread Starter
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What Should it Run? Setting a goal…

I have never set a goal. I would like some help setting a reasonable goal for my car as it sits.

I have put together a street strip car that I hope to drive some on weekends and take to TNT nights. If I can get it consistent enough I would like to try some bracket racing. I know I will never have the “quickest fill in the blank” and I am ok with it. I would like to be able to say it runs good for what it is. What’s a good goal for this car?

1987 Coupe Stock 5.0 from TB to oil pan, stock air box with K&N, 73mm C&L, race crank pulley, working A/C! manual rack, Shorty headers, 2.5” H-pipe with cats / flowmaster catback. T-5, quicktime bell, sfi flywheel, clutchtamer, tubular K-member. KYB AGX single adjustable shocks and struts. No sway bars, subframe connectors, 6-point roll bar, torque box reinforcement kit, full interior, stock 4-cylinder coil springs? solid upper control arms, solid Lakewood lift / traction bars, 4.10 gears, racing on big and little weld drag lites with 275/50/15 MT Drag Radials. Race weight between 3225 -3330 lbs depending on if I pull the spare tire and how much gas is in the tank.


1987 Coupe: Stock 5.0, T5, 4.10s and a spool
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Old 10-05-2018, 02:37 PM
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somewhere in the 14s.

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Old 10-05-2018, 02:54 PM
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The car should be capable of mid to high 13s. The goal should be to get it to run in the 12s. Do a search on Bob Cosby.
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Old 10-05-2018, 03:42 PM
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I guess I disagree, stock 5.0 isn't going to run 12s.

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Old 10-05-2018, 05:11 PM Thread Starter
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I have read some about Bob's car any clue what it weighed? Not sure Mid 12's @ 108 is a reasonable goal!

1987 Coupe: Stock 5.0, T5, 4.10s and a spool
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Old 10-05-2018, 05:55 PM
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Old 10-05-2018, 08:22 PM
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Just start out slow and never give it up. You may meet more goals you never imagined. At least that is my experience with having the same ride over 23 years.
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Old 10-06-2018, 05:44 PM
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No way it goes past a low 14, high 13. Not being negative just realistic. My buddy in a stock 94 with cia, exhaust, aluminum driveshaft and 3.73 gears with t5 went a best of 14.3. His race weight with him in it was 3200. All that suspension stuff is great but if you dont have the power you're not gonna turn the times.
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Old 10-06-2018, 11:36 PM Thread Starter
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If I was willing to gut it I would says 12.99 would be the goal. It may be close to maxed out now, but I think there maybe a little et, in the driver, weather, maybe ice it down. I think it should be able to run a 13.5x. It's best pass so far has been 13.74 @ 98.05

I am converting it to an electric fan before I take it back. The 1/8 is closer, I go there more often. Call it 8.5x in the 8th. It's been 8.71 @ 80.09 so it's really not that far off bit I also dont think there is a lot left in it with out changing parts or cutting weight.

1987 Coupe: Stock 5.0, T5, 4.10s and a spool
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Old 10-07-2018, 12:09 AM
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any 60 foot times on those passes? seems incredible to run 13.5 @ under 100mph

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Old 10-07-2018, 07:09 AM Thread Starter
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It has not gone 13.5 yet.

I no longer have the .74 slip. It ran a couple .78s those the 60' was 1.80 and 1.81, the best 60' slip i have showes 1.76, but I missed a gear that pass.

On street tires it's 60 is normally in the low 2.x and those passes don't et as well.

1987 Coupe: Stock 5.0, T5, 4.10s and a spool
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Old 10-07-2018, 07:39 AM
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I was with the cars when they were brand new. I bought one new at least every other year and everyone was racing them.

My son's pure stock 1987 coupe with A/C ran easy consistent mid 13's on good tires. My 1988 LX hatch loaded (it might as well have been a GT) auto ran a tick into the 13's with only a gear swap to a 4.10.

Pulling a little weight out of a manual trans coupe would get it around 13 flats.

The better stock all stock 5.0's were low 13's. This was at Norwalk and Milan dragways so about 500-1000 ft ASL air was typical.

I'm 100% positive of these NA stock engine numbers. Of course this was when the cars were new so the cars were in perfect factory shape. The single big mod everyone did was a gear and M&H drag radial DOT legal rear tires and skinnys on the front.

If you get an older carb car, like the 83 GT hatch I had, 14's is the norm. 82's and earlier were in the 15 area. But starting in 85 with the roller tappet engines you had to be a poor driver or not have the right gear and tires to not crack 13's in a coupe.

A little cam swap and heads will get you in 12's solid, and spending money on under drive pulleys will be one of the worse thing you can do to the car. You won't get 2 HP from an UD pulley set and it screws up cooling and alternator charge.


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Old 10-08-2018, 03:22 PM Thread Starter
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I picked up the race crank pulley years ago cheap off craigslist. The stock alternator didn't like it but the 130 amp 3g and ~2" pulley seem to charge ok. Idle with the head lights on pulls it down. I have a aluminum rad the only time it has gotten warm was sitting in traffic with the A/C on. Cut the A/C off and temp goes back down. Just finished the electric fan install have not tested it not sure if alternator will be able to keep up, if not I will put the stock crank pulley on or buy a smaller alternator pulley they sell a 1 7/8 that maybe cheaper than buying a new belt.

1987 Coupe: Stock 5.0, T5, 4.10s and a spool
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Old 10-08-2018, 04:39 PM
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For a goal of what is SHOULD run if you got all your stuff right. I would say 13.3-13.5.

Now it is a 30 year old car. Does it run like it should? Who knows.

https://www.stangnet.com/mustang-for...recipe.853108/
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Old 10-09-2018, 02:08 PM
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I have read some about Bob's car any clue what it weighed? Not sure Mid 12's @ 108 is a reasonable goal!
It was a non-AC Coupe, so I would peg it about 3050 stock (without driver). I watched Bob run 8.0X in the 1/8 mile on 26" slicks on GT turbine wheels. He would disconnect the mufflers from the H-pipe and then drive it like he stole it.

89 LX hatch, Recycled 347, Canfield 192 heads, Mac 1 3/4 LT, Victor 5.0, CSE cam, AOD, Edge 3800 lockup converter, Lentech VB, 4.10s 255R60-15 MT ET Street Radials 3080 race weight -- 11.13 @ 120.55 MPH (7.05 @ 95.53 MPH 1/8)

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Old 10-10-2018, 07:20 AM
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I'm with Sledger46... 12's.
If that stock motor is still strong, and you get the clutch figured out with those Dr's, and if Raleigh NC gets air down around 0 or negitive da, you've got a mid 12 second potential.

When mine had underdrives, off road H, KnN panel filter, 3.73's and 235/60-15's it ran 13.2's at 100 in good air on a well prep'd track. 60's were low 1.8x/high 1.79x and I was not power shifting... it did scratch the tires on the 1-2, 2-3 and 3-4 shifts tho, so, was not baby'n it.
Car was 3080lbs and I was 165lbs... for 3245lbs.
100% original suspension, stock motor from TB to oil pan with 25k miles on the odo.
At that time the car dyno's 218hp/276tq
Years later in Phoenix AZ with 76mm CnL, long tubes, off road H, 2.5 flowmaster w/ tail pipes, 4.10's, electric fan, big/little with DOTs, Hays clutch it went 12.96 at 104 in 2600' da... was a 1.72 60' on that run and I was not power shifting... it did scratch the tires on the 1-2, 2-3 and 3-4 shifts tho, so, was not baby'n it. Car would go 13.004-13.008 all day long, weekenend after weekend.
Car was still 100% original suspension, stock motor from TB to oil pan with 40k miles on the odo.
At that time the car dyno'd 232hp/292tq.

Mike H.
Duffee 306 and E7te's, Buddy Rawls cam. 368rwhp/363rwtq.
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Old 10-10-2018, 07:31 AM
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I went 13.78 with a very similar setup, main difference being an MS2 and no AC.

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Old 10-10-2018, 07:46 AM Thread Starter
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I tried to go back and figure out the DA on my last track day best I can tell it was between 2700-3000 ft. What kind of gains might I get from better air?

I finished my JY volvo electric fan install. With he added load the alternator seemed to have a hard time keeping up. I went ahead and put the stock crank pulley back on. I might need to put the stock alternator pulley back on so not to over speed it. The belt I have now no longer goes around the air pump. Will it hurt the cats to not have the air pump.

1987 Coupe: Stock 5.0, T5, 4.10s and a spool
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Old 10-10-2018, 08:14 AM
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I tried to go back and figure out the DA on my last track day best I can tell it was between 2700-3000 ft. What kind of gains might I get from better air?
Handy 13.3 at 101.3
DA Calculator - Density Altitude Calculator - DragTimes.com

and, while at the track, you can keep tabs here...
http://airdensityonline.com/tracks/
not to say it's as good accurate as a Kestrel or whatever for competitive racing, but most of us have phones, so... gives an idea of whether you drove it right or not...
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Duffee 306 and E7te's, Buddy Rawls cam. 368rwhp/363rwtq.
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Old 10-11-2018, 08:31 AM
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What kind of goal are you shootong for? If a short term goal is in mind, 13.5 would be a good target. If you plan to optimize the combo (stock motor coupe with bolt ons, a 5 speed and 4.10s) then I would shoot for 13.0.

I know a lot of posters seem to disagree but there have been enough stock intake to oil pan fox bodies that have gone high 12s that it is not out of the question. I don't mean gutted track only cars either, plenty of full interior street cars have done it with good air and a good driver. That would be my "goal" for the set up you have.

1989 LX Hatch: Black & Gold Stock 5.0, UNported E7s, Cobra Intake, 65mm TB, 75mm MAF, CAI, Pulleys, Long Tubes, Xpipe, SLP Catback, 4.10s, Springs, LCAs, 18" DD Rims, Black leather interior.
18" Street Tires: 12.95 @ 109, 1.91 60'
17" ET Streets: 12.53 @ 107, 1.69 60'
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Old 10-11-2018, 10:16 PM Thread Starter
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What kind of goal are you shootong for? If a short term goal is in mind, 13.5 would be a good target. If you plan to optimize the combo (stock motor coupe with bolt ons, a 5 speed and 4.10s) then I would shoot for 13.0.

I know a lot of posters seem to disagree but there have been enough stock intake to oil pan fox bodies that have gone high 12s that it is not out of the question. I don't mean gutted track only cars either, plenty of full interior street cars have done it with good air and a good driver. That would be my "goal" for the set up you have.
Thanks for your input. What does your car weigh? 107/109 mph is impressive. Do you know the 1/8 mph?

1987 Coupe: Stock 5.0, T5, 4.10s and a spool
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Old 10-12-2018, 05:55 AM
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I know a lot of posters seem to disagree but there have been enough stock intake to oil pan fox bodies that have gone high 12s that it is not out of the question. I don't mean gutted track only cars either, plenty of full interior street cars have done it with good air and a good driver. That would be my "goal" for the set up you have.
1989 LX Hatch: Black & Gold Stock 5.0, UNported E7s, Cobra Intake, 65mm TB, 75mm MAF, CAI, Pulleys, Long Tubes, Xpipe, SLP Catback, 4.10s, Springs, LCAs, 18" DD Rims, Black leather interior.
18" Street Tires: 12.95 @ 109, 1.91 60'
17" ET Streets: 12.53 @ 107, 1.69 60'
Dang 25th, those are some great results for a cobra intake/65tb stocker...
Care to share more?
Race weight? Density altitude? Were do you run? Miles on the odo?
Does the car still run those numbers.
Sometimes I wish I'd left mine stock... yours reinforces that.

Mike H.
Duffee 306 and E7te's, Buddy Rawls cam. 368rwhp/363rwtq.
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Old 10-13-2018, 10:21 PM
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3150 race weight. The car is not set up for drag racing. Engine has 151k on it. Heads do have GT40 valves/valve job/milled but no port work. Stock cam has been retarded 4 degrees. Car made 256/295 on the dyno.

This is the 12.53 pass. Sorry for the quality. Ran it years ago at Etown.

https://youtu.be/whSHP7ekef4

This was a slightly better to watch 12.66 pass. Traction lock was going (which is why I backed up before staging, it's a truck I wasn't trying out).

https://youtu.be/r4qsCTu8tF8
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1989 LX Hatch: Black & Gold Stock 5.0, UNported E7s, Cobra Intake, 65mm TB, 75mm MAF, CAI, Pulleys, Long Tubes, Xpipe, SLP Catback, 4.10s, Springs, LCAs, 18" DD Rims, Black leather interior.
18" Street Tires: 12.95 @ 109, 1.91 60'
17" ET Streets: 12.53 @ 107, 1.69 60'
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