So early results...
Napa 800cca battery, 190rpm cranking, mostly 3+ sec cranks and many 5+ sec.
Antigravity ATX-30hd battery, 140rpm cranking but in the 4x I've started it, every time starts within 1 sec????
I'll post logs soon, don't have them on my phone but there might be something else at play here beyond my pay grade.
ATX-30hd was 13.3 volts fresh from Antigravity (they are the only ones that sell this battery, all other batteries vendors can sell).
Maybe the starting and cranking volts are helping other components fire up faster and cranking rpm is one strong variable but not the end all.
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69 GTO Convertible, 4000lbs
462ci, 606tq/569hp - 93 oct @ 34 deg (207psi)
11.7:1, KRE H Ports, Lunati HR 282/290 w Johnson Lifters & 1.65 Scorp, E30, EFI, Holley HP + Dual Sync, 12-1 Crank Trig, 120lb Inj & 1000cfm TB, Torker II EFI Int & Rails, PTC 10", Rock Valley SS Tank, Dual 450s, Aerom EFI Reg, Aero Front & Wilwood Rear Disc Brakes, Dougs 1 7/8" & Borla Pro XS 3", Alum Rad & Dual Fans, 12:1 Box, UMI Arms & Viking Berz Fr + Rear CO Shocks, Hella UP5.0 Vac Pump, 12 Bolt, 3.73, 33 Spline
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