Game for you all, which winter modification/tweak is likely to provide the most benefit?
This is very subjective I know but what item or two do you think will do the most good and in 3 words or less why?
Replaced Autolite 3923’s with 3924’s, gap reduced from 45 to 40
Power valve restrictor opened up a couple thou to bring A/F from 13 to 12.7 ish (nitrous prep)
Increased lash by ~ .020” across all rockers, looking to quiet at least one slightly noisy roller lifter
Some minor custom carb spacer internal leak sealing to improve dual plane all the way to carbs
Verified/tweaked proper primary and secondary slot exposure/uniformity on all 4 corners x2
Added oil separator for pcv, had previously removed valve cover baffle for rocker clearance
Added 2nd A/F sensor so I can switch between sides for monitoring (both showing equal at idle)
New rear leaf springs with much more rigid isolators
New 1 1/8 diameter sway bar installed up front, stock was maybe 3/4"
Polished and a coat of wax over all
Finished N2O plumbing and wiring
Can already see vacuum is slightly better at idle and idle in gear seems a bit more healthy, no street time yet
Thanks.