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| Pontiac - Boost Turbo, supercharged, Nitrous, EFI & other Power Adders discussed here. |
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#1
07-09-2026, 01:17 PM
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I was curious how your build was coming along, you're on the right track. 16psi at 9.5 compression isn't anything crazy with 19 degrees timing but this on 93 octane, then intake temps (intercooler)?
Fuel and intake temps can be variables on a heavy car in the Summer with FI. If you can run even E30 blend you'll gain more headroom for safe power yet only need to richen it up a little.
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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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#2
07-09-2026, 01:48 PM
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Quote:
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69 Firebird - Angry Bird 455 with 84mm Torqstorm |
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