Q: Is my engine now running at normal temp at the exhaust?
Originally had EXTREMELY high temperatures at the heads and exhaust tubes. After some forum searches and advice - I have advanced the timing to a base of 18 degrees at 800 RPM to about 34 at 3000 RPM. Second I have adjusted the Mighty Demon 750 to be as rich as I can get it without a jet change. Below are my header temps in degrees at each tube 2 inches away from the flange. At the time of taking the temps the car's water temp never exceeded 170 over the course of 30 minutes.
1 (450), 3 (375), 5 (375), 7 (400)
2 (490), 4 (420), 6 (420), 8 (420)
At the collectors it is 205 (Drvr) and 220 (Pass)
At this point would you say this is fairly normal? Would you advise a jet change (I have no idea what's in the carb currently)? Asked a different way .. is the carb still potentially still the problem?
– Original 396 block and steel crank
– Dart Pro 1 Heads
– Aluminum Roller Rocker Arms
– Hydraulic Cam .050 DUR (230) ADV DUR (292) VALVE LIFT (0.544) LOBE SEP (109) LOBE OVERLAP (107 74°
– Weiand Xcelerator Intake
– Mallory Ignition Box
– MSD Pro-Billet Distributor
– PowerMaster Starter
– 750 Barry Grant Mighty Demon
– Holley Peformance Fuel Pump (provides 6PSI at the carb)