# 02' Lingenfelter quickest steetlegal car ever!!

Discussion in '2000 Lingenfelter 650 Corvette' started by LifeInTheFastLane, Aug 9, 2002.

1. #51
Re: 02' Lingenfelter quickest steetlegal car ever!!

Impreza Is A Ledgend...

866/650 lbft = 1.332 = 33% increase
absolute pressures are 14.5psi more than guage pressures (14&20)
34.5/28.5 = 1.211 = 21% increase

since torque is dependent on boost pressure, increasing 1 increases the other by the same amount, or by a smaller amount, but never by a larger amount.

since power is torque multiplied by rpm/5252, power has to go up relative to the torque - u can lie about power by quoting a value other than the peak (1969 ZL1 for example) but u cant lie about the torque

the only way u could get 866lbft out of a 427TT is by increasing the boost by 33% which would be 23.5psi guage, which is higher than the quoted maximum for the turbochargers - so they cant be stock

the 427TT revs easily past 6000rpm, most engines produce about 90% of their peak torque at the peak power rpm, 90% of 866lbft @ 6000rpm = about 900hp

its always a good idea to see if something is possible before blindly believing what u read in magazines etc as most ppl do on this site (of course doing aero-mechanical engineering at university helps)

2. #52
Re: 02' Lingenfelter quickest steetlegal car ever!!

another interesting point is that if u use the equation
power = change in kinetic energy over time, P = 1/2*m*(v2*v2-v1*v1)/t

for the 427TT u get 632RWHP between 90-100mph, thats the power used up in acceleration. If u suggest a 19% power loss through the transmission (understandable when uve got a 'box strong enough to handle 866lbft) taken from an automotive engineering data book, u get 802hp x 19% = 152hp WASTED through the transmission

that leaves only 650RWHP left for 1) acceleration 2) air resistance and 3) tire friction - and of course 650RWHP is only available if u r constantly at the peak power rpm, which is impossible if u r accelerating (unless u have a CVT gearbox)

most cars can only use 80% or less of their available RWHP at any 1 time, and yet the 427TT uses 632/650 = 97%......yeah right

if the 427TT abides by the same rules that every other car ever made does, then it most likely has 632/80% = 790RWHP = about 950hp

sorry for the physics lesson but car design is a science <A BORDER="0" HREF="http://www.supercars.net/emoticons.html"><IMG BORDER="0" SRC="http://speed.supercars.net/cboardhtml/emoticons/smile.gif"></A>

3. #53
Re: 02' Lingenfelter quickest steetlegal car ever!!

cheers man, so what career are u going for/doing.

4. #54
Re: 02' Lingenfelter quickest steetlegal car ever!!

well im in my 2nd year at university, 3 more years for my Masters Degree

i want to be in the field of aerodynamics, 1 day mayb designing F1 cars, but since the oppertunities r limited i'll probably go in2 the aircraft industry over in the States

5. #55
Re: 02' Lingenfelter quickest steetlegal car ever!!

nice plans good luck

6. #56
Re: 02' Lingenfelter quickest steetlegal car ever!!

7. #57
Re: 02' Lingenfelter quickest steetlegal car ever!!

Racing or test driving, i dont wanna touch formula 1 cos i personally think its crap im aiming for gt/endurance

8. #58
Re: 02' Lingenfelter quickest steetlegal car ever!!

nice, i think F1 is crap aswell but i wanna work in F1 coz the money is good, given the choice though i'd wanna be involved with Le Mans, sports prototypes rule all