Most high end cars capable of high speeds are not speed rev limited. They don't reach fuel cut off for overrevving the engine, they reach a speed governor that cuts fuel and/or spark.

the gearing for these cars are way to tall to be rev limited.

 

Oh yeah bikes can no doubtaly go extremly fast. The good thing about a bike is the faster you go the stiffer you get (straight line). Wind resistance won't let you make a too stupid of a mistake such as trying to do a turn at high speeds.

 

Even for the power that the 5.7 Hemi produces in the 300C, I am skeptical it could push it to 171 MPH. Having a 'chip' and air intake don't exactly make it stock either but 340 HP is still somewhat meager to push that car to that speed. Even the C5 Vette with the same power and a better drag coefficient only did about that fast.

This 'chip' and its smoother shifting I find amusing because my 05 Magnum R/T (with 5.7 Hemi) shifts way too smooth as it is. It has that power-reducing 'feature' during shifts that help extend tranny life. It also extends shift times and therefore 1/4 mile times. The SRT version does not have this though and makes for much quicker shifts, albeit at the expense of potentially burning up your clutch bands quicker.

 

300c in canada has a governor. u wont go any faster than 220km/hr.

 

I'm not saying your wrong by any means cause i dunno much about all this...and have no care to get into a hardcore debate or anything over this. But i thought longer shift times were harder on transmissions. I was always under the impression (probably more so from shift kits) that a quicker and possibly bit firmer shift was better for the tranny than a longer one). Not right? or there's a whole lotta grey area?

 

My truck is governed from the factory at 100mph , it could easily go faster.

 

1. I found this info on the 300C website and the guy that did 171 with the (minor ) upgrades but mainly stock car, to a remote location at a air strip he is a fighter pilot that wanted to see how fast his 300 would go.
2.the SRT will have its own chip in the next month or so. The fastest I have done in a 300 C to date is 190 KPH so I think yuli has a good point on that 220KPH limit but would like to see if there is a govenor or not for canadian cars.
3. SUX 2BU just getting my info from the 300 web site bud. just wondering how you like your magnum I took one for a spin last year but was not the HEMI it handled very well for me.
I was thinking of buying a new car but My DAD had own a 04 toyota Carolla
ce, now I am going to get it.(Hopefully everyone will stop making fun of me cause I have a purple car.

 

I topped out my grandpas 300c at 167mph...

 

That is highly inacurate... a lot of high end Euro, or Italien cars have Rev limiters... I know this from seeing Ferrari's, lambo's, porsche's, and many more on the Dyno hitting them.

Mark

 

Negative. It is absolutely correct. Do the math using gear + final drive ratios. They most certainly are limited by gearing and aero drag. Your comparison on the dyno is irrelevant to top speed since the Dyno has zero aero drag.

I never said that these cars don't have rev limiters. I said they do not top out on their max speed due to hitting the rev limiter in top gear.

They run out of power to overcome aero drag prior to redline in top gear.

Example: 2003 Porsche GT3 in top gear at 8200 rpm redline would yield: Wheel speed = ~484.43 km/h

Its quoted top speed: ~310km/h

FYI In general longer shift times are harder on the "hardware" ie. reaction clutch, pressure plates, etc but better for the friction material as they have less slippage during upshifts. Usually this is ok because the stress exerted on the hardware is far less than its fatigue limit.

Transmission wear is closely related to temperature (and consequently viscosity) of the ATF fluid. Lots of clutch slippage produces high Tranny temps.