I wish I knew more about this setup to help ya I'm doing similar combo but goin with the edelbrock avs2 650 carb. Sure its not the duration of the cam causing it? Pcm4less is who i used when i was using the spider crap and keith from there told me to stay under 220 duration. Did you have any...
I've been running this setup for over a month tc locks up like normal an everything works great! Read the comments in that vid lol others are fine I've talked with them guys and the owner of the truck...running strong for 3 years!
My setup is using the 600 Holley carb with the tps kit you have to have it. I wired the white wire off coil pack to the HEI rpm side of dizzy an the power wire off the coil pack to the power side of dizzy that gives u ignition and your stock tach will work. You have to make sure all your grounds...
You do not need a stand alone im living proof! Lol did this swap last month all the 4l60e needs is a rpm signal to work and i figured it out works like it did with fi