[DrKnow65]

Nice and clean SD, that 340 must be pushing the car around very well indeed. I like that you went with the holley demon for a carb :) Aluminum radiator propably keep it plenty cool but I'd toss that fan (They never pull air like they sound they are) get a pair of high flow 12" electrics and mount them diagonally. You'll pick up a few HP and not have the three little scars on your elbow like me hehehe.

I absolutley loved my chevelle when it had the 2.98:1 freeway fliers in the 12 bolt. I swapped up to 4.11's with a spool but was never happy about the RPM's at freeway speed (spent alot of gallons at 6,000 rpm going from cali to vegas). Twisted alot of driveshafts (even a $380 race shaft that was supposed to be good to 1200hp) before I realized the bushings in the trailing arms (boxed old school) were junk letting the rear end rotate up and bind the joints... oh whell live and learn.

I had a mercury 454 marine block (thicker cylinder walls you could bore to .110 over) rectangle port iron heads, 10.25:1 pistons and a eagle forged crank (454). Single plain holley manifold and an 850cfm double pumper, stock rods (yup) and super comp headers running dual 3" out in front of the rear tires.

Never broke 11:50 with the 295/70r15's but then I borrowed a set of 10" slicks and man did it fly!

Best money I spent on that car was the trailing arm bushings, hochkis springs (stock hieght), and 1 1/2" swaybars front and rear. The car never got more paint than primer black :( stripped every part and all the undercoating to cut weight (~2650 lbs w/o gas)
She was LOUD and rattled to no end, I loved that car. Didn't even have a radio.

No power brakes? you still running drums in front? disc's were my first upgrade after I hopped a curb and almost hit a lady waiting to cross the street at a red light.