I had some elongated holes in my upper control arms where they connected to the no-hop bars. I welded 1/4" washers to the sides of the links and used 1/2" bolts to put it back together. I took it out and the car would spin the tires way easier than it ever had. ( There was a motor rebuild over the winter too.) I thought that maybe the bolts were too tight and were pinching the no-hop bars and sort of locking the suspension, so I loosened them up. I know they are not squeezing the no-hops now and the car will still spins the tires like crazy. I mean, I was tootling down the road at 55 mph in 4th. I slammed third gear and it spun the tires for at least a full one or 1 1/2 seconds.
I have tried thinking this through, but, I can't figure how a misaligned rear would rob that much power. Can anybody explain that?

the no-hop bars are doing their job.
how is the weight transfer and what tires are you running???
car seems to be over powering the traction, what was the 60'-time???

60 foot time was 2+ seconds.
However, I haven't had it back to the track since I fixed the upper control arm problem.

My question is, is it possible that the 4link was out of alignment under power
enough to steal that much HP?

I know everything is straight and slop free now.
The car has never spun the tires this easily.
I'm just not sure what to make of it.

I will wait and get it on the track with some slicks and see what happens.

that top speed of 114-mph indicates approximately 450-rwhp,
this should give you an et of about 11.92-sec.
this assumes a car+driver weight of 3860#. :) and traction......
did you do anything extra to the engine on rebuild???

that top speed of 114-mph indicates approximately 450-rwhp,
this should give you an et of about 11.92-sec.
this assumes a car+driver weight of 3860#. :) and traction......
did you do anything extra to the engine on rebuild???

Yes, solid roller.
Larger carb.