Vehicle: 258, with Holley truck avenger 470 carburetor. Nutter bypass. Computer is sitting in the back seat as of an hour ago. (All wires cut by PO, so I pulled it out of the dash today.)
Carburetor details: 37 squirter, currently 10.5 power valve (initially had a 6.5 then tried a 2.5 trying to get something to change to no avail.) Can't remember primary/secondary jets but I verified that they are stock. Full manifold vacuum with 18-20in, approx 8* initial advance. (Need to check again. I don't trust my timing light. Think I broke it)
Symptoms. Well really only one starts and runs great, as long as I only use the first 1/4 or so of the throttle. Anything beyond that, at any time, the engine stumbles and will quit running.
I'm sure I'm leaving it details that would help, but I'm not sure what they are yet. Let me know and I'll definitely find out or provide them as soon as I can. I am brand new here, so I don't know how the notifications work yet, but I'll be checking in anyway.
Thanks in advance!
Sorry, currently no engine pics. I'll add some tomorrow though. Advice on what to photograph is welcome.
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Friday, July 5th, 2019 AT 1:31 PM