Carburetor change out recommendation

[Cream Puff]

Hello everyone! This is my first post so be gentle
Cream Puff is a 1968 c10 with 292, straight six engine, 63,000 original miles. I got her from a neighbor who inherited it from his late grandfather from Oklahoma (he was the original owner.)
The truck sat for 5 years with a full tank of gas. The seals were bad so I went ahead and had the engine rebuilt since we were going to be that far into the engine anyway.
My problem is the 1 barrel Rochester carburetor has been rebuilt twice now and it is still giving me trouble. I now think it is one of the passages way down deep and I am ready to replace it.
Q.I was wondering if I could get some advice on what type and or size carburetor you would recommend for all around performance? The truck is completely stock and I want to keep that way as much as possible, but am willing to change out the carburetor.
Thanks for your help.

http://67-72chevytrucks.com/vboard/c...ic132057_2.gif

[kcsa75]

Welcome neighbor!

I'm afraid I know about as much about carburetors as I do nuclear physics, but couldn't pass up the chance to welcome a fellow Lenexan to the board. There's a lot of knowledge here.

[67 chevelle]

http://www.rockauto.com/catalog/more...335&cc=1029721

[Zeke's Garage]

A Holley 390 CFM on a Clifford or Offenhauser 4bbl intake will be your best 'performance' choice. Or have your original rebuilt by a reputable place. I personally didn't take any of my own advice and built a MegaSquirt fuel injection system for my 250.. You can guess which is cheaper and simpler..

Good luck.