Don Terrill’s Speed-Talk

First, I hope this is the place for this. I didn't get any responses on the Harley forum (not surprised). For context, I am rebuilding an Evo HD motor, with 10:1 compression (up from 8.5:1), EV-27 cam and a Crane HI-4N ignition. I set the base timing to where it was at disassembly as a starting poin...

Thats what I ended up doing. Gutted the HEI and connected the system like its a 2 wire. Thanks for the help.

That is what I thought. Not sure why Fitech says not to use an HEI...why not just provide the steps to so this. I have the 8861 and the 8860 (what looks to be an extension harness) on the way to wire in the EFI for timing control.

I am looking to better understand the differences between conventional and HEI distributors. I am currently running a Fitech EFI system with an HEI distributor. According to Fitech, this eliminates the ability to control timing with the EFI system. Since I am turbocharged, I REALLY need to retard ti...

I appreciate the feedback and that is seeming like what I am going to have to do but I was hopeful that I could get it functional (cruiser, not racing it) with the vacuum/boost reference.

Hi all, let me start with the build. Its a chevy inline 6 (250) with forged internals, bigger valves, mid lift turbo cam, and a turbo obviously. EFI done by Fitech 600hp power adder system. I am not cntrolling timing with the fitech because I am currently running an HEI on mechanical advance only. M...