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Articles on 4200 I-6


SupraGlue

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I've been learning a little more about GM's Vortec 4200 inline six after taking a look at one on a stand at the Detroit Auto Show. These articles have some good info on it:

 

http://www.edmunds.com/ownership/techcenter/articles/44833/article.html

 

http://www.popularmechanics.com/automotive/auto_technology/2000/11/new_engines_for_2001/

 

DOHC, four valve, CNP, VVT (exhuast cam only) -- it's undersquare (93mm bore and 102mm stroke), which is good for torque, but bad for revs (6300rpm redline). Still it makes 270hp along with 275ftlb of torque.

 

From the description, the main bearings are girdled. It also has a cast oil pan, and uses lost foam casting (more precise than sand casting) for all the engine castings.

 

All in all it looks like it could be an exciting engine for the boosting crowd. smile.gif

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