Quote:
Originally Posted by Jyromefedx
Are there any spec sheets that break down how the individual heads increase performance?
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Yes. I have seen a few in magazines or advertising. They are usually based on a stock a displacement engine but there have been a few based on various oversize engines.
Most people have only heard the old myth about boring a block just enough to clean it so there is plenty for the next rebuild. HOGWASH!!
How many of you have ever rebuilt the same engine 2, 3, 4 times??
If you bore to the limit as determined by ultrasound and
reduce that number by .030 you will have a block that can be rebored 2 more times and will produce enough more hp that you will be smiling all the way.
This is a far cheaper way to get the same results as a high compression head for a mild street engine.
If you want to add a head on top of this, then you are getting
into the realm of hot rodding and should be well aware of the other things involved in this modification.