Foxy Green Foxbody Build

100mph on the 1/8 shows it's a lot closer to your goal than you think. 505hp at the tyres is close to 600 at the flywheel (assuming15% drivetrain loss)
 
hq308 said:
100mph on the 1/8 shows it's a lot closer to your goal than you think. 505hp at the tyres is close to 600 at the flywheel (assuming15% drivetrain loss)
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100mph at my weight is 505 at the flywheel, not the wheels
 
Yoyodyne said:
Those calcs assume a clean pass with good starting line leave and an efficient 60ft time. A better start would raise the finish line mph, all else remaining the same.
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I've had a few lads say the exact opposite to me, lol. I ran 125.4 mph but only 11.7, leaving at an idle with slicks trying not to break parts. 60's like 89fox (1.8)
Guys on yb said high mph because poor 60. I said I wasn't spinning, just not launching hard. Yb still say I'd drop mph, I figured it'd gain. Buddy that races a shit load said it can go either way. 😆🤣

Thats a foxbody @ 3280 with me, 4 speed and 4.10 rear, no tach or speedo and questionable brakes, lol. Dynoed 583hp/503 tq, changed intake and oil pan after dyno, figure 600ish hp at track
 
BOSS#1540 said:
I've had a few lads say the exact opposite to me, lol. I ran 125.4 mph but only 11.7, leaving at an idle with slicks trying not to break parts. 60's like 89fox (1.8)
Guys on yb said high mph because poor 60. I said I wasn't spinning, just not launching hard. Yb still say I'd drop mph, I figured it'd gain. Buddy that races a shit load said it can go either way. 😆🤣

Thats a foxbody @ 3280 with me, 4 speed and 4.10 rear, no tach or speedo and questionable brakes, lol. Dynoed 583hp/503 tq, changed intake and oil pan after dyno, figure 600ish hp at track
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More times than not I hear that mph doesn't change much as your 60ft changes and that's exactly what I saw the other day.

I don't expect a 5mph swing because of 0.3 second better 60ft.

I need to get the car to launch properly. If I can't put down the power at whatever power it is, what's the point of fucking with timing and fuel to get more power right now
 
89 Fox 427 said:
More times than not I hear that mph doesn't change much as your 60ft changes and that's exactly what I saw the other day.

I don't expect a 5mph swing because of 0.3 second better 60ft.

I need to get the car to launch properly. If I can't put down the power at whatever power it is, what's the point of fucking with timing and fuel to get more power right now
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Remember, this is supposed to be fun. :)
 
Mike Beck said:
Remember, this is supposed to be fun. :)
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It's only fun when you get what you expected after shelling out $16k for an engine that was already finished 3 times.

I was accounting for shitty driver and manual transmission when I asked for 650hp. A 9.90 car will go 10.99 with a monkey behind the wheel.
 
89 Fox 427 said:
It's only fun when you get what you expected after shelling out $16k for an engine that was already finished 3 times.

I was accounting for shitty driver and manual transmission when I asked for 650hp. A 9.90 car will go 10.99 with a monkey behind the wheel.
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Not necessarily
 
Get a handle on the power you have before worrying about having more. This time of year at the track beware the lane that might have shade on it . A warmer lane will help some . Tire pressure is very important also . Practice practice practice find what does work only one way toofind out. Proper shocks can make a big difference.
I had my pure stock 68 428CJ Mustang run 1.79 60 ft on a G70 14 polyglas tire 11.99 . My 67 427 Fairlane went 1.60 60ft with G70 15 redline tires 10.95. Combinations that work together and passes can get results be a bit more patient.
Good luck
 
89 Fox 427 said:
More times than not I hear that mph doesn't change much as your 60ft changes and that's exactly what I saw the other day.

I don't expect a 5mph swing because of 0.3 second better 60ft.

I need to get the car to launch properly. If I can't put down the power at whatever power it is, what's the point of fucking with timing and fuel to get more power right now
Click to expand...
A lower 60ft equates to a quicker ET the mph doesn't matter it's about who gets to the stripe quicker not faster, mph is just showing horsepower.
 
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