Making the switch from single plane to dual plane intake

78C10

Member
My 1978 C10 is nothing more than a toy that comes out in fair weather for fun only. Right now I have a Victor Jr intake on a new motor that has been out less than 10 times and usually never goes more than 5 miles round trip. I know I should be using a dual plane manifold and I am ordering one tomorrow. Last time I drove my truck I got cought in some traffic where I wasnt able to keep the motor up in the RPM range where it normaly runs. By the time I got home through the neighbor hood where is the only time I dont keep up on RPMs I pulled into my driveway where it died and acted flooded and wouldnt start for a while. I have never had this problem before and am wondering if using the single plane maniold was causing the fuel to not be atomized correctly and puddle up in the manifold causing it to act flooded. Normally the truck runs great and stong but usally never sees under 2500 Rpm unless its stopped due to a traffic light or stop sign.
 
that sounds more like a carb tuning or fuel system problem to me!
a single plane intake will generally have noticably less low rpm torque than a dual plane intake below about 3500rpm but fuel puddling in the plenum is normally not a problem if the carb and fuel delivery system is correctly set up.

you might want to watch this video

http://www.youtube.com/watch?v=N_ART4SBmdg

the basic rule is a dual plane intake will almost always be the better choice over a single plane intake if the cam duration is under about 235 degrees@.050 lift

AND READ THRU THESE LINKED THREADS

viewtopic.php?f=44&t=392&p=5415#p5415
 
I never have had a chance to look into it yet that was just something I was curious if it was possible. Maybe something got stuck in the needle and seat causing it to flood. It has never had this problem before and saturday I drove the truck a short distance about 4 miles round trip and it was running fine with out problems.
 
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