Me too.
What a killer engine...no torque...just rpm and high end breathing with that big Holley.
Engine was like a huge chainsaw engine,no torque but tons of horsepower at high revs.Then I bought a Roadrunner and installed a bracket engine in it.Along with a lot of other driveline and chassis mods.It was the only car I ever owned that wanted to kill me if I wasn’t careful.
39127140 GM part number if recollected proper was one of the optional performance solid lifter camshafts offered for small block Chevrolets in association with the early Z-28s. This high lift long duration cam offered a 1400 rpm rough race car idle with very little low end torque. With other goodies like bowtie angle plug heads, Hooker headers, double pumper large Holley, a good ignition system you had high rpm fun fun fun horsepower that fostered love and loyalty for GM and Chevrolet performance products. Sadly that is gone now and all that remains are fond memories of what once was. Build it right and turn it tight