I know SC's are primarily low end beasts and not built for all out sports car street competition, but what i would like to know is if you wanted to dramatically increase acceleration to real sports car like levels and make a broader power band (expanding mids and top end power), would it be a good idea to open up and upgrade head components, and install a 10% (or more) OD pulley, a flowing exhaust system, and say 4.10 gears on an AOD?
I'm not planning to run the car beyond 120mph, all i want out of this thing is the ability to beat up other sports cars on the street- so is there any reason why I shouldn't do this? I calculated that my rpms will increase by 750 over stock at highway speeds roughly, and this will put alot more leverage or force in lbs at the wheels.
For example, let say a typical stock Viper can put down this (hyperthetically);
(engine torque x (trans gear ratio x diff. ratio)) x 0.80=wheel torque (??)
Viper-
500ft lbs x (3.00 1st gear x 3.55 diff.) x 80%=4260 ft lbs force at wheels (4000 rpm)
SC (estimate-mine after above mods)
420ft lbs x (3.00 1st gear x 4.10 diff.) x 80%=3936 ft lbs force at wheels (2800 rpm)
Well.. I guess the viper would still be slightly faster off the line primarily because of it's higher rpm- the SC would drop off somewhat (not badly) past 2800 rpm.
So i guess the objective is to get as much HP and torque spreaded out up high around 3000 to 6000 rpm and then gear it up as high as possible to be able to come close to those other extreme sports cars- adding MUCH big power at higher rpms is the key for the SC to overtake (weight included). Somehow i think the supercharger drag, weak heads, and crank are the limiting factors with achieving that.
You know I'm not sure that equation above is correct either.
Anyone please share your thoughts-
I'm not planning to run the car beyond 120mph, all i want out of this thing is the ability to beat up other sports cars on the street- so is there any reason why I shouldn't do this? I calculated that my rpms will increase by 750 over stock at highway speeds roughly, and this will put alot more leverage or force in lbs at the wheels.
For example, let say a typical stock Viper can put down this (hyperthetically);
(engine torque x (trans gear ratio x diff. ratio)) x 0.80=wheel torque (??)
Viper-
500ft lbs x (3.00 1st gear x 3.55 diff.) x 80%=4260 ft lbs force at wheels (4000 rpm)
SC (estimate-mine after above mods)
420ft lbs x (3.00 1st gear x 4.10 diff.) x 80%=3936 ft lbs force at wheels (2800 rpm)
Well.. I guess the viper would still be slightly faster off the line primarily because of it's higher rpm- the SC would drop off somewhat (not badly) past 2800 rpm.
So i guess the objective is to get as much HP and torque spreaded out up high around 3000 to 6000 rpm and then gear it up as high as possible to be able to come close to those other extreme sports cars- adding MUCH big power at higher rpms is the key for the SC to overtake (weight included). Somehow i think the supercharger drag, weak heads, and crank are the limiting factors with achieving that.
You know I'm not sure that equation above is correct either.
Anyone please share your thoughts-
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