If you have NOT ever built a engine..........most definitely buy a crate engine. The ZZ4 is just a little more the the one you are interested in. Some Chevrolet dealers have their own ZZ430's for less than 5 grand. 430 horsepower will really push the Monte Carlo.....
If you have built engines in the past...........you may save a few dollars and get a stronger engine by doing a lot of the work yourself. Carefully selected 'used' pieces combined with NEW stuff can make for a very powerful yet drivable street engine.
Bigger is BETTER........and size does count.
You can build a stroked 350 (383) for small money.......not much more than a standard rebuild. SBC 400's are great for moving heavy cars too
......a .030 overbore makes for a 406. Easy to get 375 - 400 horses .
DEUCE..General Rodding Tech Moderator