Hi all , how many horsepower has a Z28 -98?
Friends tell me 288 but i thought it was 305.
What time 0- 60 mph for a not modified car with automatic?
Come on boys , help a girl out
/Nellie

[This message has been edited by Nellie (edited August 14, 2002).]

 

Nellie,

They were rated from GM for 305hp.
Most were making 315-345. Seems the 98 were the wild years on variences in power.

Most cars assuming a decent launch would be 4.9-5.4 0-60mph

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DaveD
1998 WS6 #207
-ARE Stage II Head/Cam
1998 Regal GS
-It Has Boost

The Phantom of CamaroZ28.com
Http://PhantomTA.cz28.com

 

Hi Nellie,

My manual transmission '98 dynoed 288 at the rear wheels when it was stock, but that was 800RPM below the rev limiter due to a speed governor on my car.

The manuals seemed to average in the 290's to the rear wheels, with the automatics averaging a bit less. The base vehicles were advertised with 305HP, and the SS/WS6 variants were badged with 320HP if I recall correctly.

Most concur driveline loss on a stock vehicle is 15-20%, so divide your rear wheel numbers by 0.85-0.80 and you get a good guess as to what the engine is making by itself. The percentile difference between 345 and 288 is 16.5%.

0-60 for an automatic? A lot of variables, but I agree with Dave.

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1998 Chevrolet Camaro Z28 - Navy Blue Metallic 6-speed
Best 60'/ET/MPH: 1.95/12.33/115.06, before LS6 intake.
SAE DynoJet: 402HP, 378TQ [366/344 before intake].
Power Mods: FTRA, FRA, FRA2, K&N 33-2118, Whisper Lid, Whisper MAF Ends, TB Bypass, LS6 intake manifold, CNC 2.02/1.57 heads, CC 218/226 527/535 112, NGK TR55's @ .050, Grot headers/Y-Pipe/CarSound cats, 3" cutout, Ed Wright tuning, SPEC Stage II clutch.
Other Mods: Bridgestone 265/40/17 Pole Position tires, Enkei Win wheels, Hotchkis PHR/STB/LCA's, Addco 32/21mm F/R sywabars, Powerslot rotors, Hawk Plus brake pads, Stainless brake lines.

 

Hey Nellie, do you have any web addresses for swedish speed parts stores ? I'd like to check swedish price level. I might take my 98Z28 to Finland when I'm moving back there and Finnish tolls and taxes are just plain sick. Imagine :

your_price = ( orig price + shipping ) *
( 1+toll ) *
( 1+ dealer cut ) *
( 1+ sales tax )

sales tax = 22%
toll ~= 10%

 

Rated at 305- see sig- underated? Hell yes!!!!

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98 Z28 A4 2.73 aluim. driveshaft
Free mods SLPlid & bellows
BMR LCA & SFC
Stock: 288rwhp 311rwtq

 

I'm confused, Is the 98 Z28 the LS1 or LT1 ? It makes out 305 hp and also give out about what in torque ? Does the 5.5 sec is verified (anyone has a source I can use to prove my friend). Does anyone know if the canadian models are any different?

Sorry for resurrecting an old post

 

The '98+ V8 F-Bodies have the LS1.

The '93-'97 V8 F-Bodies have the LT1, and a handful have the LT4.

Torque is rated at 335 for '98-'00 and 340 for '01-'02, but it's more like 370 ft-lbs. at the engine.

Most Z28s and SSs will hit 60 at around 5 seconds. Don't believe what you see in magazines, they're testing NEW cars, and any car gets a little faster after it's been broken in.

 

They average at 345HP.

My car is stock with only the K&N filter and I can get from 0-60 in under 5 seconds. I have a 1998 A4 Z28 with 3.23 gears.