Top speed or high speed auto tranny setups?
10-04-2006, 06:16 AM
#1
TECH Addict
Thread Starter
Top speed or high speed auto tranny setups? What sort of top speed have some of you guys clocked with the A4 setup.
4th is 0.70:1 which isn't all that different to the T56's 5th gear at 0.74:1
Now a stock Corvette will pull about 180mph @ 6000rpm in this gear. So what about some of the modded Fbody's?
4th with 3.42's should be 191mph @ 6000rpm anyone had their A4 Fbody up to that speed or more? How much rwhp did it take?
And looking at the calculator if you could pull 6500rpm in 4th that would be 207mph. Surly some of the 450rwhp setups should be capable of this.
4th is 0.70:1 which isn't all that different to the T56's 5th gear at 0.74:1
Now a stock Corvette will pull about 180mph @ 6000rpm in this gear. So what about some of the modded Fbody's?
4th with 3.42's should be 191mph @ 6000rpm anyone had their A4 Fbody up to that speed or more? How much rwhp did it take?
And looking at the calculator if you could pull 6500rpm in 4th that would be 207mph. Surly some of the 450rwhp setups should be capable of this.
10-04-2006, 10:01 AM
#5
Originally Posted by 300bhp/ton
What sort of top speed have some of you guys clocked with the A4 setup.
4th is 0.70:1 which isn't all that different to the T56's 5th gear at 0.74:1
Now a stock Corvette will pull about 180mph @ 6000rpm in this gear. So what about some of the modded Fbody's?
4th with 3.42's should be 191mph @ 6000rpm anyone had their A4 Fbody up to that speed or more? How much rwhp did it take?
And looking at the calculator if you could pull 6500rpm in 4th that would be 207mph. Surly some of the 450rwhp setups should be capable of this.
4th is 0.70:1 which isn't all that different to the T56's 5th gear at 0.74:1
Now a stock Corvette will pull about 180mph @ 6000rpm in this gear. So what about some of the modded Fbody's?
4th with 3.42's should be 191mph @ 6000rpm anyone had their A4 Fbody up to that speed or more? How much rwhp did it take?
And looking at the calculator if you could pull 6500rpm in 4th that would be 207mph. Surly some of the 450rwhp setups should be capable of this.
10-04-2006, 10:19 AM
#7
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Thread Starter
Originally Posted by yak
I'm not sure on that last point. it took a buddy of mine 15.7 seconds to go from 150 to 206 in 5th gear (t56) IN an 800rwhp car. I think it will take more than 450rwhp
This only has a turbo charged Rover K-Seires S4 1.4 litre engine with 330bhp, yet at Bonniville it managed 217mph. This was evidently due to low Co drag and a fairly small frontal area combined with low rolling resistance and curb weight.
But still there are plenty of other cars that are capable of over 190mph with less power than 450rwhp. Ferrari 288GTO, Lambo Countach.
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10-04-2006, 10:27 AM
#8
Originally Posted by 300bhp/ton
I hear what you're saying but high speed is possible with much less power.
This only has a turbo charged Rover K-Seires S4 1.4 litre engine with 330bhp, yet at Bonniville it managed 217mph. This was evidently due to low Co drag and a fairly small frontal area combined with low rolling resistance and curb weight.
But still there are plenty of other cars that are capable of over 190mph with less power than 450rwhp. Ferrari 288GTO, Lambo Countach.
This only has a turbo charged Rover K-Seires S4 1.4 litre engine with 330bhp, yet at Bonniville it managed 217mph. This was evidently due to low Co drag and a fairly small frontal area combined with low rolling resistance and curb weight.
But still there are plenty of other cars that are capable of over 190mph with less power than 450rwhp. Ferrari 288GTO, Lambo Countach.
Dude, its a ***** with wheels, of course it will top out pretty strong, it is also probably geared ESPECIALLY for it and light as hell.
10-04-2006, 10:32 AM
#9
TECH Addict
Thread Starter
All it is, is a production MGF with the windscreen removed running Rover 800 steel wheels. Yes the gearing is tall, but so is the gearing I'm referring too in the Fbody.
10-04-2006, 03:30 PM
#11
Top speed takes a long time to achieve. This is how long it takes a stockish 996 TT to get 0-190MPH with zero aerodynamic mods. We probably could have squeezed 192 out of it if we pulled the mirrors.
http://www.youtube.com/watch?v=QtC1_REzuRM
http://www.youtube.com/watch?v=QtC1_REzuRM
10-05-2006, 04:16 AM
#13
TECH Addict
Thread Starter
No one else??
Maybe I posted this in the wrong section?
I can't believe there aren't more out there who have topped high speeds? I mean even in stock trim my 2.73 A4 would happily bang the 158mph limiter.
Also remember a BMW M5 is bigger and heavier and only has 500bhp, yet without the speed limiter they have been clocked at 205mph.
Maybe I posted this in the wrong section?
I can't believe there aren't more out there who have topped high speeds? I mean even in stock trim my 2.73 A4 would happily bang the 158mph limiter.
Also remember a BMW M5 is bigger and heavier and only has 500bhp, yet without the speed limiter they have been clocked at 205mph.
10-05-2006, 09:42 AM
#14
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There was a guy here who did the salt flats at/over
200 in an F-body, Cal I think was his name. May
find more info in the road racing section, Silver State
Classic etc. Don't know as it was an automatic.
I'd be thinking about how to get the lockup clutch
to hold full power output since otherwise you will be
throwing a lot of heat especially if you have a "sporty"
stall speed converter that isn't up to full efficiency
at your peak torque motor point (torque fading, vs
square or cubic-with-speed drag, setting the top
end). Figure putting out even a measly 300HP at 90%
efficient, you have to dump 30HP of thermal waste
out through the trans cooler through 1/4" diameter
worth of slow moving oil. Mmmm, toasty.
Sustained high power output is not how these cars
(F-bodies) are set up. They are under-cooled IMO.
Trans and motor.
200 in an F-body, Cal I think was his name. May
find more info in the road racing section, Silver State
Classic etc. Don't know as it was an automatic.
I'd be thinking about how to get the lockup clutch
to hold full power output since otherwise you will be
throwing a lot of heat especially if you have a "sporty"
stall speed converter that isn't up to full efficiency
at your peak torque motor point (torque fading, vs
square or cubic-with-speed drag, setting the top
end). Figure putting out even a measly 300HP at 90%
efficient, you have to dump 30HP of thermal waste
out through the trans cooler through 1/4" diameter
worth of slow moving oil. Mmmm, toasty.
Sustained high power output is not how these cars
(F-bodies) are set up. They are under-cooled IMO.
Trans and motor.