Nitrous 383, the motor was put together following the exact specs of AFR's engine (we called and got all the details of it), the vette sees about 90% strip action, it doesn't have all the luxury items (heat, A/C, etc.). I believe it weighs about 2700lbs, (can't rememeber exactly). When the as spec AFR motor went in it it pulled 11.28 at 121mph, he left the line at 1800rpm because he is a real good chassis tuner and knows his stuff, car has 4.88's and th350 with a MSD limited to 7000, and he hit the limiter about the last 40' of the track. We pulled the motor changed to lightweight crank, aluminum rods, and Ross racing pistons(10.25CR), custom solid roller, and AFR single plane manifold, kept the AFR 180 heads, changed to a 7700 limiter, car pulled 10.80 at 129 (but had serious traction problems). Now after working on traction issues it's best time is 10.50's with highest mph of 136. Vettes are light and if you remove unnecessary parts and unwanted parts they get even lighter. Plans are to build another motor with 220 AFR heads and 12:1~CR, roller cam, etc., and add a two stage fogger NOS, tub out the back, and a few other mods, but keep it street legal. He's hoping for 9's or better but we'll have to wait and see.
4U2NV, I bet if you bought parts through ebay (to make it a 383), and shopped around for some used AFR heads went with 9.5CR, torqy cam, you could have a 12 sec motor easily and all for less than $2500. The question is will your car handle a 12 sec motor. But if you want 375hp then by all means, build it the way you want it.