Bob, Tim, and listers,
Here we go, I will list my particulars first then go on to the carb
questions. This will be kinda long.
Engine, 5 bolt 289 thirty over, crane copy of the hipo 289 cam (hydrolic)
Heads, 289 with 351W valves, port matched, cleaned up pockets etc.
Compression, 10:1
Headers, 2" exhaust, no crossover, 3 chamber flowmasters.
Intake, Tiger lowrise.
1/2" composite Phenolic plate with pcv takeoff going to rear holes.
this is all the details I can recall without the build sheet in hand.
Carb, out of the box it had #70 jets all around, and 6.5 powervalves.
30cc accelerator pumps. The Idle air bleeds and Highspeed air bleeds
look like baby jets and are screwed into the venturi area of the carb.
On most Holleys the air bleeds are machined into the carb body and are
only tuneable if you drill them out, with the new design they become
tuneable by changing the size of the bleed itself. Larger means more
air/less fuel, smaller/morefuel/less air. All four throttle plates are
stainless and have 1/8 holes on the leading edge. With four corner idle
there is better fuel dispertion to the entire engine but it's harder to
get it dialed in. I have dropped the jet size to #66 and changed the
powervalves to 4.5. I am still to rich at Idle so I ordered the air bleed
kit so that I can lean out the idle air pre circuit. I tried driving it
around some and it had pretty good responce off idle, stuffed me into
the seat pretty good :). The air bleeds are part of the circuit that
pre emulsify's the fuel before going through the venturi. I think this
is still to rich. I am only out one turn on the bleed screws, any more
and it gets real stinky. I only have 11" of vacuum at idle (1000rpm) and
can't get it to idle any lower. The carb also has a rear throttle plate
adjustmet screw that is upside down so I had to make a special
screwdriver to adjust it. The only vacuum port on the carb is where the
aircleaner stud is so I had to drill out and tap the stud so that I could
measure vacuum and then button it back up. What a pain, am I having any
fun yet? So the bottom line is if you want one of these get ready to
pony up about $700.00 bucks and order the airbleed kit and a jet kit and
a powervalve kit. I had to run one of those chrome dualfeed fuel lines
but it is mostly hidden, the fuel runs on the passenger side so the fuel
line looks better. I have to get back to work now so send the next batch
of questions to me and I will get to them. Have a great weekend :)
Bill
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