X3 on the SP3 At least on my build, and it sounds like others also, the SP3 has no downsides, the 350 loves it, drivability is awesome, cold start is instant, no coughing or backfiring like a lot of other single plane intakes when cold. I find my plugs color evenly compared to a dual plane with its convoluted passages, which tells me the fuel distribution is more uniform.
New addition to the bucket of bolts..... Mechanical oil & temp. That gives me 2 elect & mech. of each. The vintage Stewart Warners lighting sucked. I had to change the bulbs out on these to match.
Thanks Steve! If I fly out to AZ this winter, there just might be a bare set of aluminum heads in my suitcase on the way back.
Sounds Great!! Gotta love that high-compression sound with that cam pumping thru an N-25!! Congrats on getting it all together!!