COPO, Drag-Pak, CJ II, (FX) Secrets

Mark Yacavone · 01-27-2023, 09:31 PM

I happened to be at Speedworld for one of the first test sessions of the then new blown CJs. John Calvert, Gary Stinnett and a few others were there with the Brent Hajek cars.
The stick cars would just wring the tires off them and wouldn't lift the nose more than an inch. I remember thinking that these cars will be a bear to make consistent and competitive. I know it could be all about the clutch in the stick cars.
Fast forward to today... I see FX cars with big hp and torque numbers cutting great lights and wheelie-ing to lots of dead on runs, and winning eliminators, ..on 9 inch tires.
How is it being done? Timing? Starting out with minus numbers? Boost control? What else?
We hear that the COPOs don't use drive by wire. Do the others?

I'm thinking this thread might belong one floor down, if we get actual tech oriented answers.
Not sure we will. It might take membership in the Six Figures Club to find out ;-)

01-27-2023, 09:31 PM	#1
Mark Yacavone Veteran Member Join Date: Mar 2002 Location: Miles From Nowhere Posts: 7,743 Likes: 2,847 Liked 5,003 Times in 1,903 Posts	COPO, Drag-Pak, CJ II, (FX) Secrets I happened to be at Speedworld for one of the first test sessions of the then new blown CJs. John Calvert, Gary Stinnett and a few others were there with the Brent Hajek cars. The stick cars would just wring the tires off them and wouldn't lift the nose more than an inch. I remember thinking that these cars will be a bear to make consistent and competitive. I know it could be all about the clutch in the stick cars. Fast forward to today... I see FX cars with big hp and torque numbers cutting great lights and wheelie-ing to lots of dead on runs, and winning eliminators, ..on 9 inch tires. How is it being done? Timing? Starting out with minus numbers? Boost control? What else? We hear that the COPOs don't use drive by wire. Do the others? I'm thinking this thread might belong one floor down, if we get actual tech oriented answers. Not sure we will. It might take membership in the Six Figures Club to find out ;-) __________________ "We are lucky we don't get as much Government as we pay for." Will Rogers Last edited by Mark Yacavone; 01-27-2023 at 09:36 PM.