Headwork?
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I haven't seen it done for the 4.8/5.3 often as it's not really worth it. For the cost of some really worked up heads, you can drop in a 6.0 with better heads already...
I think gains are in the 20-30rwhp only. Not much to write home about really for the cost.
I think gains are in the 20-30rwhp only. Not much to write home about really for the cost.
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