Nice, sounds like you got the converter issue figured out.
In that thread post what changed, like loosened it and now leaving at like 4000rpm? 1.35 60ft is great, also update on there what tire you're running, Slick or Drag Radial?
With Paul K in here, I'm sure things like...
Cam size and LSA (I'm 110LSA)
Compression (11.7)
I'd gamble us tighter LSA guys need more timing and then the even higher compression cars with the bigger LSA need less timing up top.
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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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