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Canadian Enthusiast

Canadian

Posted
Posted

Hello to all,

 

Looking at an '03 base Silverado extended cab 4x2 with a 4.3/Auto set up, I do not know what gear set it has.

I searched this site a bit looking for info on how well this combo works for occasional towing,<1500 Lbs trailer w/ 4 people. the rest of the time the truck would commute and do light duty

 

My other question is WHY doesn't Chevy put the I-6 in the Silverado, and when might they, anybody know??

 

Thanks

 

Canadian

bobcat5544 Enthusiast

bobcat5544

Posted
Posted

With out the VIN # or the RPO codes that are located in the glove box I couldn't tell for sure what gear ratio you have. as a guess it will be either 3.42 or 3.73

 

Far as your second question. 6.0L I-6 gm has been using them since 2001 on up in the sivlerado mostly found in the 1500HD and the SSR models

Canadian Enthusiast

Canadian

Posted
  • Author
Posted
With out the VIN # or the RPO codes that are located in the glove box I couldn't tell for sure what gear ratio you have. as a guess it will be either 3.42 or 3.73

 

Far as your second question. 6.0L I-6 gm has been using them since 2001 on up in the sivlerado mostly found in the 1500HD and the SSR models

 

 

Bobcat 5544,

 

Not the 6 liter V-8 the inline 6, 4.1 liter.

 

This seems a much better choice for the pickup truck.

bobcat5544 Enthusiast

bobcat5544

Posted
Posted

Sorry had a brain fart on that.

 

GM is looking into getting rid of the 4.3L v6 and using the I-6 4.2L in the 1500, but it is not for sure if they will or when. They may start offering it in the next 1-3 years and still have the 4.3l option untill there supply runs low

Ductape Enthusiast

Ductape

Posted
Posted

The 4.3 is very torquey for its size. I used to drive a '92 WT with the 4.3. Towed a jeep on a car trailer many times. Probably 5,000 lbs in tow.

It would pull it very well. Better than some small V-8's I've used. Sorry I don't know what gear ratio it had.

 

DT

gyusher Enthusiast

gyusher

Posted
Posted

My 07 is a 4.3. . came with a 3:23. . long legs. . .almost too long. . I'm thinking about changing to either a 3:73 or a 4:10

 

2000rpm now is almost 80mph. . . I think 2000 at 70 would be just dandy. . .even 72/73 would be fine. . .

 

In the old days with your Turbo 350/400 4:10s might be too short but now-days with OD etc 4:10 is far more appealing. . .

Canadian Enthusiast

Canadian

Posted
  • Author
Posted

Here are the numbers by the Chevrolet litrature

 

4.3 liter V-6 195 HP@4600 RPM, 260 Lbs/ft torque @2800 RPM

4.2 liter I-6 291 HP and 277 Lbs/ft 90% of torque available between 2000-6000 RPM

 

Compare that to the 4.8 liter V-8 285 HP@5200 RPM 295 Lbs/ft @4000rpm

 

Too bad for guys like me that would like the I-6 and not the V-6 or V-8 in a Silverado.

The numbers tell the whole story!

 

Canadian

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