So the '80 engine has 2-bolt mains? (you first listed it as having 4-bolt mains).
As others stated, this engine is not a '70 LT-1 or even the slightly later 350 that continued with the forged pistons/cranks and better rods (thinking circa 72/74 Z28). So this engine, if just rebuilt stock / mild, would not harm the 200-4R, but you may want to budget beefing it up for a future power increase.
And as other stated your power's going to mostly depend on the heads. You can get the standard Vortecs but will have to limit the lift on the cam to roughly .500" (due to the valve springs). There is another Vortec that can see upwards of .600" lift if I'm correct. Note that Vortec heads will need a Vortec-specific intake as well and the covers are center-bolt. I would stick with a flat-tappet hydraulic cam (you can go roller but there some other things you need to do). A good set of pistons, crank and rods (if reusing the rods at least have them checked and cleaned up). Upgrade the bolts of course. Also, if you go the turbo route, check what the compression ratio needs to be - this is going to dictate the piston and the head chambers used. Also look into the amount of boost the turbo puts out. Lastly, you could always build it as a 383!!
As others stated, this engine is not a '70 LT-1 or even the slightly later 350 that continued with the forged pistons/cranks and better rods (thinking circa 72/74 Z28). So this engine, if just rebuilt stock / mild, would not harm the 200-4R, but you may want to budget beefing it up for a future power increase.
And as other stated your power's going to mostly depend on the heads. You can get the standard Vortecs but will have to limit the lift on the cam to roughly .500" (due to the valve springs). There is another Vortec that can see upwards of .600" lift if I'm correct. Note that Vortec heads will need a Vortec-specific intake as well and the covers are center-bolt. I would stick with a flat-tappet hydraulic cam (you can go roller but there some other things you need to do). A good set of pistons, crank and rods (if reusing the rods at least have them checked and cleaned up). Upgrade the bolts of course. Also, if you go the turbo route, check what the compression ratio needs to be - this is going to dictate the piston and the head chambers used. Also look into the amount of boost the turbo puts out. Lastly, you could always build it as a 383!!
