Stock horsepower

[rplaster]

What is the diference in the moters of the 2002 corvette verses a 99? If you look in the model center it shows a 99 with 345hp and 350tq. I think it's 2001 or 2002 it shows 350hp and 375tq. I just recently bought my 99FRC so if this is an old or stupid question please forgive me i am still learning.

 

[1999C5FRC]

The main differences between a 1999 and 2002+ are: Different intake (from the LS6), new cam, and lower restriction cats. Newer cars also have the LS6 PCV system and engine blocks.

Hope this helps,

John
1999 C5 FRC

 

[rplaster]

Is there a noticable difference in power? Are the newer vette's a bit faster? My 99FRC is stock with only 6000 miles. I would like to mod it just enough to beat another stock vette but i don't want to compromise reliability.

 

[1999C5FRC]

Well, the newer cars only have 5 more horsepower, but that doesn't tell the whole story. The torque comes on sooner in the newer cars. For example, The 2002+ cars have 375 Lbs at ~4400 RPMs (manual trans, per GM, auto is 360 Lbs at 4,000). This translates to 314.28 HP at 4,400 RPM (TQ * RPM / 5250 = HP).

The 1999 produces 350 at ~4400 which is 293.33 HP

So, even though the 2002+ has only 5 more peak HP, at 4400 the difference is 20.95 HP.

Now, the hartop weighs 3174 Lbs to the coupe's 3246, HP ratio is

9.20 lbs for every horsepower at peak - FRC has slight advantage
9.274 lbs for every horsepower for the coupe at peak

However,

10.82 lbs for every horsepower - FRC at 4400 RPM
10.32 lbs for every horsepower - coupe at 4400 RPM, coupe has advantage

So, theoretically, all being equal, the 2002+ will take you offline until engine peak at ~5400 RPMs (where both cars will equal out), until 170+ MPH where the .29 coefficient of drag on the coupe will start to put the hammer on the .31 coefficient of drag on the FRC, and top out a tad bit faster.

bottom line is this, given a good driver, either car could beat the other in a drag race.

I hope this helps,

John
1999 C5 FRC

 

[justafamilyman]

Hi rplaster,
Simply this, Chevy-Corvette has been tweeking the LS1 engine. What differences will you "feel" between the two, probably none. It is only on the strip and track where the differences may be seen, You now have the best American made soprts car ever built. Forget the 5 ponies and just enjoy the ride.
A collective Vette peace.
Blue Borg Brian 1 of 58

 

[Gorgon]

rplaster, welcome to the CAC and I must say I really like your choice of car. Enjoy the ride as this is a fabulous car.

Leon

 

[rplaster]

Thanks for the info guys. Gorgon my 99FRC is pewter also i was very lucky to find this car. It's stock, 6000 miles, it has HUD, Magnesium wheels, never driven in the rain, and the guy even had the window sticker which i framed. Can you tell i'm a proud new vette owner?

 

[CSDMagred01]

They made those changes in 2001.