![]() ![]() Working with the 180cc RHS heads was a mild Comp High Energy 252H cam that offered 0.425-inch lift, 206-degrees of duration 0.050) and 110-degree LSA. Though this power level would easily be served by a set of ported stock or Vortec heads, we stepped up to a set of as-cast Pro Action aluminum heads from RHS. ![]() Toss in a mild cam and cylinder head upgrade and the power gains really start to add up. Replacing the 2G with a Q-Jet and intake alone can be worth 25-30 hp. The first 100 hp is the easiest since every component on the stock two-barrel engine is restrictive, starting with the diminutive carburetor. Obviously, coaxing more power out of a two-barrel 355 isn't particularly difficult, especially given the vast array of performance products available.
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