Originally Posted By: efi-diy
Add 10# of boost to a stock 4200 and you get 400 rwhp....

Buy a rusted out 2wd donor. Around Calgary complete engines with harness/pcm can be had for C$500.

watch this... he is using a TH400.

https://www.youtube.com/watch?v=hGYuPENQZHM&feature=youtu.be


Just a note - its running E85.

51 GMC 4.2 turbo
Can't solved today's problems using the same technology/thinking that created them