steckelberg
20+ Year Contributor
- 77
- 0
- Sep 16, 2002
That "K" engine is only for the 4G63 engine. They never made a special edition 420A engine (besides tranny and timing in different places with the same horse power such as a neon R/T). The situation with you brother probly had to do with different gearing, rather than HP and weight vs. HP and weight.


I still need to make a trip to the junkyard to get everything else. I plan on doing the swap in 1 weekend. Im gonna take out the motor and leave it on the cherry picker to do everything, seems like it'll be easier. Hopefully it goes smoothly, but Im sure I'll run into my own little list of problems.