Quote:
Originally Posted by David R.
What are the advantages to having the high compression heads? What kind of improvements do you achieve in performance? I am currently going through my AA engine. Are there any drawbacks from deviation from stock head?
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With my original stock head, I would have to plan my routes to avoid having to shift down on long or steep grades, thereby pissing off the modern cars as I crept along?
With the 6.0 head I just fly up the grades and not having to shift down any more.
With the 6.0 head just be mindful of not advancing spark to the same level as the 4.5