Hi Rod
Why not just upgrade to the newer SOHC or DOHC heads? Trey flow bench
tested a turbo Legacy head (which is supposed to be improved over the NA
head) and it flowed quite poorly compared to the newer models. Although
this is just a guess, you could probably gain 8 to 10 hp with such a swap.
PeteH
> From: "Rod Grosvenor" <roderic@cableone.net>
> Subject: Re: Second Cat?
>
> I plan to pull both
> heads, mill them approx .0040", late 140-horse cams & followers & go from
> there. The possible lower cyl pressure could be due to worn cam lobe(s) or
> followers-we`ll see! ROD
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