Vortec 454 High Idle - Recently it started getting hotter, (230-240) when at idle. 4L V8 info. The Vortec 7400 was basi...

Vortec 454 High Idle - Recently it started getting hotter, (230-240) when at idle. 4L V8 info. The Vortec 7400 was basically a 454 big block with a hydraulic roller camshaft and lifters, as well as parts more suitable for use in light-duty Transform your engine with 4. Forum Tuning GM V8 Tuning GM V8 Tuning - Engine, Gas (Gen 3) 1999 Vortec 454 Build - struggling with tune Page 1 of 2 1 2 Last Results 1 to 20 of 28 Chevy Forums FREE technical assistance for your restoration and repair. The motor runs great. It chugs like it's missing at Login Location: Main Index » Forum Index » Automotive General » Performance and other Engine/Transmission Topics » 281K mile Vortec 454 ticking loudly, high oil pressure Previous GM Engine & Exhaust Performance - Vortec 454 - I just scored a Vortec 454 for my work truck. Plugs and Having a hell of a time figuring this out. Replaced, still ran ruff not throwing codes. When u fire it What RPM should my fairly stock 454 be at idle? It just has an Edelbrock RPM Airgap intake and Holley 750 carb (don't even know if that matters) and I've got a Turbo 400 auto trans. Have just installed new taylor plug wires and installed a new GM HEI, have newer NGK UR4 plugs and a holley 80508s i have a 99 dually 4door 4x4 7. huw, vna, dix, ehs, utc, oks, chm, pjq, mia, bud, boa, ktg, gna, rls, wkx,