Omega Doom

iTrader: (2)

about 5 years ago I had my car dynoed and it made 414rwhp 390rwtq. Now I know after many miles you lose some RWHP and RWTQ but does anybody know around how much? and also I recently had to replace my rearend which I did with another 10bolt but this one came with 4.10 gears so im just wondering how much RWHP those gears eat up? and lastly I just slapped on some Weld Pro Stars(so lightweight wheels) so just for the sake of musclecar knowledge I guess you could say I wanted to ask to see if anybdy on here knew any of the answers to my inquiries

Omega Doom

iTrader: (2)

oh damn sorry this a A4 car with a Yank 4200 stall full weight 2002 WS6

HCI2000SS

iTrader: (2)

I'm not sure there is some difinite and accurate way to measure any of this since there are so many factors and possibilities involved

Omega Doom

iTrader: (2)

yea I kind of figured but hell anything like rough guestimates will be accepted

HCI2000SS

iTrader: (2)

I remember my old tuner telling me he sees around a 2 to 3 percent loss on the dyno with gears. I do remember that

Omega Doom

iTrader: (2)

hhhmmm interesting so that's like what from 414rwhp ???

HCI2000SS

iTrader: (2)

About 8-12 hp

Omega Doom

iTrader: (2)

oh ok that's not too bad and thank you for your replies this morning sir

Omega Doom

iTrader: (2)

I figured having at least 400rwhp with a 4K stall and 4.10 gears might be enough to take on the new 5.0s and 2016 SS

HCI2000SS

iTrader: (2)

Glad to help. What mods are done to your ride?

Omega Doom

iTrader: (2)

stock block,heads,and intake 2002 WS6 it has FLP long tube headers with true duals and a RPM5 cam along with the Yank 4200 stall and it was tuned by Sam Miller now 5 years ago on a 100* day in North Texas in july it ran a 11.78@116 1/4 and 7.49@94 1/8 that was with no suspension mods and MT 275-40-17 DRs and stock A4 tranny and rearend with 3.23 gears

HCI2000SS

iTrader: (2)

Gotcha. That's definitely enough to take out a stock 6th gen or 5.0. Even if the gears cost a few hp on the dyno it will be faster in a race, and that's all that truly matters. Plus your car is lighter

Omega Doom

iTrader: (2)

ok well since then I have added UMI LCA and relocation brackets plus their panhard bar and also a built 4l60e with transgo shiftkit then more recently the 4.10 gears, ported mass air flow ends and a smooth bellow, also Im about to finally replace my patriot valve springs with some BTR 660 versions and going to also replace my old factory stock plug wires with some MSD versions and finally removed my heavy OE Z06 wheels with Toyo DRs with the lighter Weld Pro Stars big and littles with some MT 275-60-15 DRs

madmike9396

iTrader: (29)

The track will tell you the real results. I highly doubt you have lost any hp from engine wear

HCI2000SS

iTrader: (2)

The lighter tire and wheel setup will help quite a bit too

Omega Doom

iTrader: (2)

yes my tuner told me years ago that in cooler weather alone I should have dropped a few tenths he felt the car could run 11.40s in the 1/4 so yea im hoping I can drop a few more tenths but now my minor delima is the tires although they fit don't hit the fenders on bumps, now I was told to roll the fenders but another good friend told me use a double adjustable panhard bard to center the rear? which by the way my car is lowered a bit. what do you guys think???

HCI2000SS

iTrader: (2)

I have an adjustable panhard bar and rolled my fenders, and I still rub a tad with 315 BFG dr's.

Omega Doom

iTrader: (2)

wtf I wonder why yours are rubbing with 315's they are only 26" tall? im running a 28" tall tire and im told that the adjustable bar will let me center the rearend to where I wouldn't have to roll the fenders? also how did you roll yours? with what tool?

HCI2000SS

iTrader: (2)

Yes 26" tall, and yes I used one of those fender rollers as well. I know every car is different, so some will rub and others won't with the exact same tire, wheel, etc....Granted it only rubs around a turn on occasion but it still does.

Omega Doom

iTrader: (2)

oh ok do you still have your bumpstops