carburator problem, please help!!!!!!!!!!

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carburator problem, please help!!!!!!!!!!

Postby h-bot » Thu Oct 03, 2002 8:44 am

From: locomonza_REMOVE_369874_THIS_@yahoo.com

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




[This is message #132 by user locomonza on Yahoo! Group H-Bodies of Northern Ohio: http://groups.yahoo.com/group/hbodiesofnorthernohio ]
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carburator problem, please help!!!!!!!!!!

Postby h-bot » Thu Oct 17, 2002 1:14 am

From: mich_southpaw46_REMOVE_159908_THIS_@yahoo.com

--- In <a href="/group/hbodiesofnorthernohio/post?protectID=180181253150082198090149061101176012018058057136039121079242048096092076083061">hbodiesofnorthernohio@y...</a>, locomonza <<a href="/group/hbodiesofnorthernohio/post?protectID=091233212180056219138097203245129208071">no_reply@y...</a>> 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




[This is message #134 by user mich_southpaw46 on Yahoo! Group H-Bodies of Northern Ohio: http://groups.yahoo.com/group/hbodiesofnorthernohio ]
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Posts: 53214
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