Larry, I was considerng the PRI cam as well. How do
you think it works for you? What kind of added power
are you expecting fromthe cam, and head work. Did you
get the PRI head too?
Mark
--- Larry Elswick <sos@kymtnnet.org> wrote:
>
> I just finished my engine
> rebuild and initial test driving. The first 1/3
> of the throttle is terrific with plenty of response;
> after that it just sits there. This sounds like the
> beginning of my search for those elusive "perfect"
> carb needles for my HS-4's. The car ran great
> before that darned rod "came a'knockin". Here's
> a list of the engine modifications as part of the
> rebuild.
> 1. Engine bored .020" over
> 2. New flat top pistons
> 3. Head ported and polished with larger valves and
> .125" shaved off
> 4. PRI performance cam (280 Duration and .435"
> lift at the valves). Tubular pushrods cut .125"
> to keep the geometry correct.
> 5. Dual HS-4's, I don't have a clue on what the
> current needles are or how to find out.
> 6. 4-1 Monza header.
>
> I've considered buying a fuel/air ratio meter to
> check
> the entire RPM range for mixture. First does this
> sound
> like a mixture problem? What are my options for
> correcting
> this problem? I saw some DOS software for comparing
> needles. Is there any newer software? HELP! Thanks!
> Larry
=====
-Mark Holbrook-
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