langss,
For my lug nuts, I currently have to use metric tapered lugs for the front wheels because I have the "1LE Mod" which consists of using 90's B-Body spindles and 3rd Gen F-Body 12" front rotors which have the later metric thread pitch. For the rear, I currently roll the car around with standard tapered lug nuts. I have to do final fitment on the rear with the disc brake conversion because I'm using a rear end that came out of a Camaro.
5th T/A,
Your assumption should be correct. Aluminum LS blocks are about 125lbs lighter than iron LS blocks which are similar in weight to Pontiac engines. Factoring in aluminum heads, intake and carburetor, I would guess around 200lbs difference on engine. To go further on this subject, I'm bolting the aluminum engine to my original 4spd transmission and doing a 1" engine setback on the frame. My setup will probably be lighter than most LS swaps you will see because I'm not running a big/bulky overdrive auto or T56 transmission. Manual brake swap should be another 20-30lb taken out of the car. This setup should be as light and well-balanced as you can get without going too crazy on modifications. I won't be doing things like striping out the door structure or fabbing aluminum core supports like some of the racers do. These basic things I'm doing are enough for me.
FormTA,
Thanks! I was actually planning on doing one of the classic Holley carburetors with the gold zinc coating but this polished aluminum body 770 carb fell right in the same price range, is lighter and was in stock for sale. Not what I planned on initially but I think this is working out for the better.