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Originally Posted by wpage
The 5.3 v8 sounds interesting. Coming off the 3.5 and 3.7 I5 the Buick v6 4.3 would have been a nice choice.
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The GM 4.3 is an inherently unbalanced motor because of its 90 degree block layout with 6 cyls, When they added the balance shaft it helped some. With 6 cyls. you want to stick with 60 degrees and 8 cyls. 90 degrees. That's why they were able to take massive horsepower out iof the 3.8 motor unlike the 4.3. The Rebel