Holley HP users

1973Barracuda said

Steve, when you say correct harness, what part number are you referring to? Only two main harnesses that I am aware of.

HP Harnesses - Holley Performance Products
I am using an early one.

Thanks for the information on the LS TB, that is the way I have been leaning.

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Yeah it depends on your sensor setup. And forgive me if I am not quite understanding the issues, but all I had to do was pick either early or late design on the cam and crank sensor set up. The throttle body already had the GM sensors that matched up to the wiring harness. I didnt have to splice or rewire anything. I was very plug and play, nothing like the FAST system i was running prior. The throttle body is a very nice addon thou, just throttle cable bracket and exit point not the best for the HEMI engine.