Would a 3.4L 04 Chevy Impala motor fit a 3.4L 98 Chevy Venture?

Answer 1

you are getting into the years where the 3400 received various upgrades, i believe the most major of which is the camshaft and valve timing. don't take it to the bank but i don't believe the swap will work without major work. don't ask a salvage yard because they will flat out tell you no. i have done motor swaps like these in the past and currently doing a motor swap for a Montana of the same year. i have used a motor from a 2001 grand am and swapped it into a 1997 venture with a few changeovers, the biggest being changing the injection rail and the coolant crossover pipes. hollander interchange told me that the swap i did above would not work period. i would check around on the internet to see the difference between the later model engine and the bad one you currently have. there is a difference but i cannot tell you if it was 03 or 04 that the motor received the upgrades. if the valve timing remains the same, compression is the same, if the core engine remains the same then the swap can be done.