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114 Posts
I have a good honest question here that should reguire a lot of different thoughts. What is the proper rpm's to shift? Is it at the highest torque rpm? or maybe the highest HP rpm? or is it a compromise of the two? When I run my combo on the dt dyno it shows that I max out torque at 5000 but I max out of HP at 6500. I stil am within 60 HP at 7000 but I am down 120 fp of torque at 7000. on the graph the torque and HP cross lines at 5400rpm's. In real life my motor runs into a brick wall at excactly 5400 rpm's. It just quits pullin altogether and won't rev any higher. I have the good Holley electric red fuel pump, brand new Crane springs and related stuff, New Holley 750, Trick ignition new 3/8 fuel line from inside the tank to the carb. the dt dyno shows me that the lifters are pumping up ( I dont have anti pump ups or fast bleed yet). I have some Rhodes on order for later next week. But any way,
,what determinds when you guys shift, It makes no sence to pull past the torque but maybe torque is what gets you off the line and HP is what gets you to the other line, and if that is the case then I would be better off to shift at 5400 when the torque meets the HP. Maybe not
Anyway I am goin racin for the first time in 28 years as soon as the weater clears and it ought to be fun
Bob





