--- In hbodiesofnorthernohio@y..., locomonza <no_reply@y...> wrote:
> Hi, I have a problem with my holley, Ok the engine is a 350 with a
> holley 1850-3.
> When the car is at idle the fuel ratio gauge shows me that it is Ok
> but when I put the car on heavy load or a cruicing speed like 55 or
> 60 mph it shows me a very lean condition, I think maybe the power
> valve is not the correct for my vaccum, I have 15in at idle in
drive
> and I have a power valve 65, the power valve may open too late???
> could this be the problem???.And this could be the problem of my
> engine running too hot???
> Please if anybody can help me with this one.
> Thank you in advance
> Alex

From what I remember, Holley powervalves should be only 2 inches
below what you idle at. This would put you at 125 or so. Also
sounds like you need more fuel with larger jets. I do remember I
could not get a powervalve low enough for a 327 with a roller cam in
it. I had an 850 CFM double pumper. Everyone said it was too much
for the 327. I blocked off the powervalve and jetted the secondaries
8 numbers richer to make up for it. 78's in front and 88´s in back.
Mileage was terrible, but I wasn't after mileage. Ran mid 12's in a
73 Camaro.

Mike