Originally Posted by clarion69374

Kinda dead thread but in case OP hasn't made a decision yet I would say 4.3 just finished my swap and I'm glad I went with a 4.3. Not trying to take anything away from the 3.4 because it is a great motor but the 4.3 has more power more parts and you can supercharge them too if you wanted to get crazy. And there's nothing like a 4.3 that sounds like a sbc