ive got a complete engnbldr street rv,os ss valves with his 261c cam ,quench set at .007" thorley header 2/1/2 inch pipes. 5.29s locked on 35x15.5 tsl sx's

its real torquey , my next mod will be the msd ignition.and an lce adjustable cam gear. i get about 12mpg now,i think it runs a little rich on the mains still so im going to run a smaller main jet its a 170/170 factory, im going to try a 165 on both sides. i think the smaller jet will help with mileage. and help me get a little more power in the mid rpm range. now it kicks hard off idle to about 3000 rpm it makes its best power down low which is what i like but id like to help it pull a little higher like 4000 or so.