I have a real problem and I'm at the end of my rope.
1967 coronet 383bored and stroked to 431 Holley 4160
750cfm vaccum secondaries. 6psi of fuel pressure 5/16 fuel line.
My problem is it just shuts down. 1st gear fine shift at about 4 grand, 2nd gear fine I shift to 3rd/drive at about 5 grand it drops to 3500 when I shift and just dies at around 3800. It actually bogs/sounds like it shuts off pull my foot out of it and it comes back to life around 3000.
What I've tried to do to fix it.
new blaster 2 coil
new plugs
new cap and rotor
replaced rubber fuel line at tank and from hard line to fuel pump.
put a pc of fire blanket between header and fuel line. to divert heat.
Anyone have any Idea's