Originally Posted by ieatfeets
does anyone make a set of headers for the fwd l27? ive found um for rwd app. but i cant find any fwd headers... or am i going to have to have some custom fabbed?
I am not aware of ANY L27 in a RWD format (let alone an L67)...the S1 manifolds flow extremely well as-is, much better than an S2 mani...but what you need to look out for are hairline cracks in L67 manis (L27 manis are the same, but you can find those with almost to no cracks in any boneyard). In fact, S1 manis are pretty close to what a custom header would look like anyways, so why waste the money?
As for the original question, as wilwren said, there is much else to do other than the cam. One thing people forget to look at are lifters. Older lifters, as I discovered when I tore into my motor, fail collapsed...engine will still run, but valve lift is reduced. The computer can compensate somewhat, but nowhere near as good as a replacement set of lifters. Even after cleaning all my lifters, they were still a little mushy...new lifters aren't mushy at all. I would start there if you want more lift out of your valves.
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