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Author
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Topic: ET/MPH relationship
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smblk t-bolt
Journeyman Posts: 93
From: port alberni BC Canada
Registered: Apr 2002
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posted 09-01-2004 08:08 PM
   
Just raced my fairlane with the new 351w in it. just curious as to what kind of ET I can expect if I had gotten better traction. Through the mufflers on 12" M/T street tires (not DOT slick) babying the launch (18-2000 rpm on a 3000 stall) maybe 1/3rd throttle and slowly givin her gas until full throttle just into 2nd gear I ran a best of:60ft- 2.12
ET - 12.93
MPH - 109.1 using a couple of horsepower calculators(one based on ET, the other on MPH) I got: ET based= 292.1 rear wheel
MPH based= 324.4 rear wheel so I'm just curious what I could expect for an ET, and what is the relationship between MPH and horsepower in this case... I assume my MPH wouldnt go up as much as my ET may go down? thanx
ron
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70coupe
Gearhead Posts: 483
From: Toronto,Ontario,Canada
Registered: Aug 2000
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posted 09-01-2004 09:23 PM
I was running very low 12's with 109MPH. I mean like 12.00's.
Best of luck.------------------
351c 4v clsd heads
60'1.53
1/8 7.09@94
1/4 [email protected]
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Fastymz
Moderator Posts: 20638
From: Reno Nv USA M&M#1240
Registered: Apr 2001
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posted 09-02-2004 12:55 AM
I'd say low 12's MPH is based on power and the ET is base on how well the car is setup.------------------
SCOOP oddly obsessed with big scoops on little Mustangs 65 coupe,351w,C4,Big Boss 429 hood scoop,8" 3.40 TracLoc. My Pics
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bfxcomet
Gearhead Posts: 689
From: Port Alberni, B.C. , Canada
Registered: Mar 2001
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posted 09-02-2004 02:22 AM
I raced Ron a couple weeks back and I ran my best time against him running a 13.74/99mph. I could not believe how fast his car was accellerating at the top end. cut a great light and we raced to the line were he blew past me. I think the car can reach the low 12's. He had no traction and wheel hop.
Roger------------------
65 comet project
84 T-bird 289/C4 13.74/99mph street/strip
www.avdra.bc.ca
Made in CANADA built for speed
#1145
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Ryan Wilke
Gearhead Posts: 2265
From: Stanton, Michigan 49707
Registered: Oct 2000
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posted 09-02-2004 09:19 AM
quote:
Originally posted by smblk t-bolt:
...what kind of ET I can expect if I had gotten better traction. -- I have come to realize that making HP is the easy part.....the hard part is getting all the HP you have to hook up with your particular car. Factors of suspension setup, tranny type (convertor stall or clutch style) weight (total & distribution front to rear), size of rear tire, track conditons (specifically track prep), etc. all have a significant bearing on getting your 'lane to hook up the best it can.
...I'm just curious what I could expect for an ET, and what is the relationship between MPH and horsepower...
-- Most race calculators require two of the three factors (ET, MPH and total weight (car + driver)) to determine a close prediction.
GOOD LUCK!
Ryan 
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Scott (69Mach)
Gearhead Posts: 787
From: Walnut Creek, CA USA
Registered: Jun 99
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posted 09-02-2004 10:48 AM
I'm turning 12.0 - 12.2 at ~109
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bluestreek
Gearhead Posts: 1724
From: Athens,GA
Registered: Jul 2001
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posted 09-02-2004 04:38 PM
Here are a couple of timeslips where I attempted to get traction on full treaded street radials. I would letup the clutch at 2000 and quickly ease the peddle to the floor, and granny shift at 5400 rpms:60'- 1.95
1/4- 12.38
mph- 110.2 60'- 1.85
1/4- 12.27
mph- 109.8 ------------------
1966 Mustang Coupe: Custom glass hood and BIG scoop sits atop a 289 stroked to 331 c.i., Steel crank, rods and girdle, TFS alum. heads, Stealth 8020 intake, Xtreme 268 Solid Roller, Holley 750 HP, long tubes, 4speed, 9" 3.50 posi.
11.86 @ 116 mph (7.62 @ 93 mph)daily driver!
DanH
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