[HYPR]

Originally Posted by HO455

The biggest drawback on them is they are not a very efficient engine. Flat out use more fuel. I had a 68 396 SS Chevelle at the same time I had a 69 GTO. Both were T400 auto cars with comparable miles and mostly stock (headers). The GTO would get 16 to 17 mpg and the Chevelle was 11-12 mpg highway.

Yep I agree they are a reliable yet pretty boring motor with poor economy. Once I get the rest of my '72 C20 CS dialed in the way I want it the 402/TH400 with the DNE2 OD will go off to another home and an L96/6L80e will take up residence under the hood. Better MPG and way better SPM with over 360HP and 380FT stock. Once the Computer is reflashed and tuned plus headers and a few other tricks these are not unheard of to get 10% more in both HP and Torque numbers. The best news is I am seeing this combo pretty regularly for under $3000 with under 100K on them. My current has only 84,500. My '06 GTO with an LS2 has 161K on it and runs prefect with no issues at all and still delivers 18-24MPG and lots of Smiles Per Mile!
Bob