LS1speedy

iTrader: (3)

You have a 2002 Ls1 with an A4 and put down 290rwhp, which is a 12% powertrain loss. Your built tranny and rear is ready for any thing you throw at it.

1 engine ($2500)est. + $500 for tune
________
cat-back exhaust($450+$150)
Lid ($100+$100)
25% UD pulley ($250 + $200)
Ported TB ($120 + $200)
1.85RRs ($600 + $250)

325rwhp est.

$85.71/hp

2 engine ($3000)est. + $500 for tune
________
cat-back exhaust
Lid
25% UD pulley
Ported TB
cam ($400 + $1000)

345rwhp est.

$63.63/hp




3 engine ($7800)est. +500 for tune
________
true dual set up($600)
headers ($600 + $450)
LID
25% UD pulley
90mm Intake/90mm TB ($1000 + $250)
Heads ($2500 + $350)
cam

418rwhp est.

$64.84/hp




4 engine ($8000)est. + $500 for tune
________
cat-back exhaust
Ported TB
EPP D1sc Procharger kit ($6000 + $1200)

460rwhp est.

$56.66/HP



5 engine ($10800)est. + $500 for tune
________
cat-baxk exhaust
LID
ZL402 ($8500 + $1500)

500+rwhp

$53.81/hp





6 engine ($18000)est. + $500 for tune
________
cat-baxk exhaust
LID
ZL402 Low CR ($8500 + $1500)
D1sc Procharger ($6000 + $1200)

700+rwhp

$43.90/hp


So in conclusion from this, the more you spend the lower the dollar price per horsepower. Do you all think this estimation is right on target?

02NHRAtransAm

iTrader: (17)

you forgot one factor that could really cheapen your $/hp ratio..... nitrous

Dip Stick

iTrader: (1)

not to mention, if you do it as you mod.. usually you end up upgrading already bought items.. which in turn is wasted money in the hp/$ ratio.. itll kill it fast.

Not to mention alot of people put in supporting mkods that add no hp at all.

Doesnt look like you took into consideration tires/wheels.. suspension mods etc.

Didnt include any of the new twin turbo systems they have blowing around.
Though the built tranny/rearend was mentioned.. but what's that run installed? 6k? parts and labor. hurts hehe

The first two builds wouldnt need the suspension rear/tranny mods.. though when you start hitting the 400+ range then you need them.

RPM WS6

iTrader: (3)

This is not quite accurate. A stock '02 LS1 engine makes 350hp (F-body or Vette). A stock '02 A4 car would very likely make around ~290rwhp as you state. That's a loss of 17%, which is more accurate for the A4 trans. 12% would be a better calculation for the M6 trans.

MSDRbooger

iTrader: (1)

i just happen to have a stock 02 T/A with an automatic trans. actual SAE dyno numbers are in my sig

SHINER

iTrader: (18)

start with gears and a stall(if your tranny doesnt already have it)


Then get heads/Cam/boltons Run you anywhere from 2500-4000 depending if u buy used or new parts and where you buy them.


Search is your friend!


Your car runs pretty stout for a stock A4.

SHINER

iTrader: (18)

your car runs very stout for a A4.


How much ultimately depends on which route you wanna take. What you expect from your car, and many other things.

Try searching the dynometer section, and using the search.

H/C/boltons run you anywhere from 3000-4000 for everything and ultimately if you are going to perform the labor yourself.



Good luck. This is a very expensive/addicting hobby.