Quote:
Originally Posted by w72
You guys are nerds and I love it. I'm just curious which fuel would get into detonation or pre-ignition first. I'm about to fire up a new 467, going to try it with the Sniper running timing control as I don't have a suitable carb handy.
I'm sure the efi unit can handle the fueling for break-in, but not keen on taking chances with the built in all-or-nothing timing setup that brings all the advance in at once. I'm comfortable setting up a 2d timing table in the Holley software. Any input on a good starting place?
It's a fresh Len Williams 467 (4.25" stroke), zero-decked, Melling SPC-8, 1.65:1 rockers, RA manifolds with the larger collectors, RPM intake. I've seen people recommend wildly different timing specs for similar mills. I'm more concerned with a safe first 1000 miles than maximum power for now.
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Nice build. What heads and CR? I am 470cid, 4.25" stroke, .040" overbore. Running the SPC-8 cam, 1.65 lifters on the rare #64 HO heads 87cc. Puts my CR like 10.6:1. Been thinking of Sniper. But funds are stupid tight right now and I can't seem to finish this rebuild form the crappy Comp cam going flat a few years ago.
Oh and with the XE274 cam, I used to have to have 16* initial. I think I was 32 total,, all in by 2800. With approx 12* vac advance on manifold vacuum