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Think I’m going to start over with the idle mixture screws and lean out the secondaries as that may be my problem cruising. My Carter fuel pump is also putting out 5, 5.5ish.
Car doesn’t bog at all, it’s just the shitty AFR at mellow cruising that’s annoying me.
Running a 180 tstat. 3.5 PV (in original post) TTI 2” headers. O2 bungs are just after header collector. Idle vacuum is 12ish, but when putting in gear, idle vacuum dropped to 7 custom grind cam will get specs tonight. Cruising vacuum is roughly 15. Center carb is new from a couple years ago...
Engine is a 512 with aluminum heads, 10.5 CR. Initial timing is 20 and all in at 2,200 is 36. At idle, Six Pack hovers around 14.5 AFR. But while calmly cruising at 35/40mph, the AFRs are 12.5 driver side and 11.5 pass side, or richer. Center carb has 62 jets and 3.5 PV. secondaries are...
Bbody Rallye dash indicator green lens set with gaskets and parking brake warning light gasket.
$15 shipped to lower 48 states. PayPal or money order accepted. PM me if wanting it.
NIB Holley 12-887 adjustable fuel pressure regulator (4.5 -9 psi) with return line port to fuel tank. THIS IS NOT THE RECALLED UNIT.
$75 shipped to 48 lower states. PayPal or money order accepted. If near NW Indiana, I’m willing to meet in person for hand delivery and cash. PM if wanting it.
Ended up just emailing Promax and there’s channels directly above the jets, so just screw in and go. That’s what I figured since the car gets plenty of fuel.
For those running the Promax Six Pack secondary jet plates, does this look right, is the gasket supposed to be closed behind the jets? Or does the jet well go up in front of gasket? I’m guessing it’s right since the car doesn’t super lean out when getting on it, just seems weird to me.
Also...
Looks like the rear negative/grounding wire is missing from the engine block to firewall, which can create all sorts of reliability issues. See yellow circled area. Unless there’s a lead somewhere else. Should be two, negative battery to front right of engine block, and back left to firewall.