Can a driveshaft make this much of a difference?
Thread Starter
11 Second Club
iTrader: (4)
Joined: Aug 2004
Posts: 1,832
Likes: 0
From: Rockland County, NY
Can a driveshaft make this much of a difference? i have a head and cammed 02 ss that dyno'd at 425 hp to the wheels. Last year i ran a 12.2 at 117.5 mph in the quarter. since then, i've installed a custom 3.5" steel shaft in place of the stock aluminum piece. Today at the track, I couldn't get better than a 12.8 at 113 mph. Last year, even if i spun off the line and through 2nd gear, i would still never trap lower than 116. Is it possible that changing to a steel driveshaft cost me 4.5 mph and over half a second on my et?
Doubtful. Weather change is what I'd bet your issue is. You may have lost a tiny tiny bit of time, but definetly not more then half a tenth to a tenth (if its really heavy) by changing the DS.
Thread Starter
11 Second Club
iTrader: (4)
Joined: Aug 2004
Posts: 1,832
Likes: 0
From: Rockland County, NY
I never actually weighed it, but if i had to estimate, i'd say 6-8 lbs. Another thing that baffled me was that my friend with his 04 vette that only has vararam intake, 90mm throttle body, underdrive pulley, and b&b exhaust was running 12.85 at 111. Is it possible that my car may have reacted more drastically to the weather than his did due to my tuning?
