The 411 swap on an LT1takes a lot of tuning. You also have to put a 1996 and newer valve body in your 4L60E. I am finishing up tuning a 411 swap on my LT4 Hotcam engine that is heavily modified. I will assist anyone who plans on doing one.
The delteq system and a good opti work great without spending the cash on the 411 swap. I was wrong when I said that delteq was out of business. I was just looking at their website. The kits are still kinda pricey, but still cheaper than a 411 swap. We will have to see what Aroberson77 & Vilefly come up with.
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