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Discussion Starter #1
:brick:

Why did GM quit using the 5.7 litre Vortec in the Chevy and GMC trucks? It would have been nice to have a 4.8, 5.3, 5.7, 6.0 and 8.1 litres available to their lineup.
 

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Isn't the 6.0L basically a reworked 5.7L? I'd rather have a new engine design than an old one. If all the engines were basically equal in age of design and features, then I'd agree (like the I-4, I-5, and I-6 engines).
 

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The 5.7 truck engine was one of the GenI smallblocks, along with the 5.0L, and the 4.3 V6 is basically a Gen1 5.7 with 2 cylinders chopped off. This engine was essentially replaced by the GenIII 5.3. The 5.3 makes more horsepower, although a bit less torque, and gets better mileage.

The 6.0L is also part of the newer GenIII family, and really didn't have a counterpart before 1999, unless you go back to the 70's and the 400 (6.6L) small block.

The 5.7 was a damn fine engine though. It easily outpowered the Ford and Dodge competition, and got better mileage to boot.
 

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Originally posted by LakeMichigan+May 26 2004, 08:33 PM--></div><table border='0' align='center' width='95%' cellpadding='3' cellspacing='1'><tr><td>QUOTE (LakeMichigan @ May 26 2004, 08:33 PM)</td></tr><tr><td id='QUOTE'> <!--QuoteBegin-MelvinJ@May 26 2004, 07:11 PM
The 5.7 truck engine was one of the GenI smallblocks, along with the 5.0L, and the 4.3 V6 is basically a Gen1 5.7 with 2 cylinders chopped off.  This engine was essentially replaced by the GenIII 5.3.  The 5.3 makes more horsepower, although a bit less torque, and gets better mileage.

The 6.0L is also part of the newer GenIII family, and really didn't have a counterpart before 1999, unless you go back to the 70's and the 400 (6.6L) small block.

The 5.7 was a damn fine engine though.  It easily outpowered the Ford and Dodge competition, and got better mileage to boot.
we talked about other engine sizes, I would be typing for 45 minutes to write out ALL the CID combinations the small block Chevy mill had in V6 and V8 configurations (factory installed in cars & trucks, not afterwards "builts") from 1955....what was the smallest V8...265CID from 55ish and the 94-96 Caprice....and the smallest V6...the 200CID from the late 70's A & H bodies??? [/b][/quote]
The smallest small block was the 262 from the Monza in 75 and 76, and the Nova in 75. I think the 4.3 from 94-96 in the Caprice was 265. That seemed like a nice little motor - 200 hp.

I think 200 was the smallest of the 90 degree Chevy V6s,
 

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Discussion Starter #5
:argue:

The 6.0 litre is not a reworked 5.7. the 6.0 litre is the same 366 cu in motor GM has used for many years in their medium duty trucks, it has just been modified to work in the lighter models.
 

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Originally posted by Winston@May 27 2004, 06:25 PM
:argue:

The 6.0 litre is not a reworked 5.7. the 6.0 litre is the same 366 cu in motor GM has used for many years in their medium duty trucks, it has just been modified to work in the lighter models.

No, the 6.0L is part of the GenIII line of small blocks. It was new in 1999. The 6.0 medium duty truck engine was an old big block. Totally different.
 
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