Just to set things straight,, you don't need no big block to put the car on the bumper.
This is from last year with a 660HP 436 small block that is now my backup motor. After a season of carrying the fronts WELL out past the 60' cone, and dropping it back to mother earth somewhere after the 1-2 gear change,, I had to replace the front suspension with an AJE front frame kit. (nice pieces BTW). And I had shortened the oil pan almost an inch by slamming it to the ground and I have NEVER lifted with the fronts in the air. Anything that goes up high,, comes down HARD and that's all there is to it. I totally destroyed the original stock underpinnings in just one season. Just as Big Dave found,, the stock Chevy II suspension is real fragile and won't tolerate much of this before it's toast.
In order to stuff a BBC in one of these you have to cut the inner fenders and box the area that covers the coil springs,, and cut the rear of the inner fender for the fenderwell exit headers. Anyone who has ever messed with these early shoebox's knows 80% of the strength of the front suspension is built into the inner fender panels. Removing anything from them is just asking for trouble.
This year with the new motor combination she's running 9.30's @ 143 and with all the original glass, window operators, a full cage and tubular frame rails replacing the stock floor, it tips the scales at 2625 pounds (without driver) and that was after loosing over 200 pounds with the
AJE front frame kit compared to the stock suspension. If I were to go fiberglass doors, fenders, lexan windows and all I'm sure the thing would be easily at the 2100 pounds.
In the end,, it doesn't take a big block to make one of these things just plain STUPID FAST.