we definitely dont pull to 6500 amigo. more like 6000, then we start to fall......
98 Cobra Cams Swap on Mach 1 --->
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Mach0ne351 said:
we don't. cobras do
That dosent make alot of sense with a chip and a good safe tune on a dynomometer I wind mine to 7000 RPM all the time and it is still pulling when i let off to shift gears :dw:Mach0ne351 said:
Power falls down for cobras also. I've seen a dyno sheet of a stock 99/01 cobra and it looked almost identical as my Mach.Mach0ne351 said:
http://www.mustang50magazine.com/techarticles/138_mustang_dyno_testing/index14.html
That link has a dyno chart, not a graph, but it illustrates the point. When I have a little more time I'll look for a graph. Power went from 276 @ 6000 to 241 @ 6500. If that's what people call "pulling to redline" then my Mach does that also :shrug:
there is a little misconception between both cars. peak hp on a mach 1 comes at 6000-6100rpm. 01 cobras peak hp comes at the same rpm, again, stock 01 cobras won't put out more hp past 6100rpm, same as mach1's.
now, is not like a mach1 won't pull up to 6500rpm, in fact, if you wanted to maximize your powerband, you should be shifting at such rpms.
you have to go there because of our gearing space amigo. mach1's pull out more torque at a more lower rpm, you can wind up a mach1 engine to 6800rpm in 1st and 2nd gear, but in 3rd gear, is useless to go higher than 6200-6400 rpm simply because we have enough torque in 4th gear, (coming out from 3rd at 6200-6400rpm) to shift that soon on a stock car. you would find peak torque at 4100-4200 rpm on a stock mach1. stock 01 cobras peak torque would be at 5000rpm i believe.
that's why you would see cobras going all the way to redline in every gear. compare the tq of a 01 cobra at 4100rpm vs a mach1 tq at the same rpm. now multiply that tq times the gear ratio and you would get output power for that gear, output power that is translated into hp per the formula HP = ( Torque x RPM ) / 5252. in other words, they have to go to redline in every gear, because they want to maximize power to the wheels in every gear. for example, a mach1 shifting at 6300rpm from 3rd to 4th would be on its powerband when 4th gear is engaged, a 01 cobra shifting at 6300rpm from 3rd to 4th would be out of its powerband, tq would be really low, when 4th is engaged.
stop thinking cobras have more top end power than a mach1. stock vs stock
mach1's have a little bit more hp peaking at same rpm and more tq in the middle of the powerband that peaks a little bit earlier than a cobra.
now, is not like a mach1 won't pull up to 6500rpm, in fact, if you wanted to maximize your powerband, you should be shifting at such rpms.
you have to go there because of our gearing space amigo. mach1's pull out more torque at a more lower rpm, you can wind up a mach1 engine to 6800rpm in 1st and 2nd gear, but in 3rd gear, is useless to go higher than 6200-6400 rpm simply because we have enough torque in 4th gear, (coming out from 3rd at 6200-6400rpm) to shift that soon on a stock car. you would find peak torque at 4100-4200 rpm on a stock mach1. stock 01 cobras peak torque would be at 5000rpm i believe.
that's why you would see cobras going all the way to redline in every gear. compare the tq of a 01 cobra at 4100rpm vs a mach1 tq at the same rpm. now multiply that tq times the gear ratio and you would get output power for that gear, output power that is translated into hp per the formula HP = ( Torque x RPM ) / 5252. in other words, they have to go to redline in every gear, because they want to maximize power to the wheels in every gear. for example, a mach1 shifting at 6300rpm from 3rd to 4th would be on its powerband when 4th gear is engaged, a 01 cobra shifting at 6300rpm from 3rd to 4th would be out of its powerband, tq would be really low, when 4th is engaged.
stop thinking cobras have more top end power than a mach1. stock vs stock
mach1's have a little bit more hp peaking at same rpm and more tq in the middle of the powerband that peaks a little bit earlier than a cobra.
zero3mach1 said:
that used to be my theory too, but i've noticed that shifting at 6300-6400 was way slower than shifting at 6100-6200. i'm going to shift at 6 grand tonight to see what effect that has on my times.
so, did you see any difference shifting at 6000rpm ?????
zero3mach1 said:
yep, dropped about .3 by going from 6300-6400 to 6100ish. was going to try it to see how shifting at 6k would affect it, but last time i went out was on et streets and had to relearn how to drive the car anyway...
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