Use a fairly conservative dual pattern cam like the comp cams XE262, 1 5/8" headers, dual 2 1/4" exhaust with good mufflers, a performer vortec pattern intake, a tweaked q-jet or 600 edelbrock carb (vaccuum secondarys) and you will have a very strong, torquey daily driver. One of the mags did a buildup a few years back on a 334 like yours...it had 64cc iron heads (non vortec), performer intake, 600 holley, headers, and a comp cams high energy 268 cam...it made massive off idle torque but ran out of steam around 4800-5000 rpms. Build for torque...you will never get lots of top end power out of this combo because of the excessive shrouding from the small bore. I think the mag buildup made 360 pounds of torque at only 2500 rpm and about 320 hp. I'll see if I can find the article and post more specifics.
375hp 78 Chevy truck
77 Chevy Nova
95 Chevy Lumina 3.4L
and building a 78 Nova
[This message has been edited by travis (edited 03-31-2001).]