Th400 1st Gear Shudder
I have a Hughes Th400 with a forward pattern manual valvebody. I was having some trouble with it having a bind higher up in the rpms in 1st gear, but that problem is fixed after installing a new valvebody.
I still have an issue in 1st gear though. I will put it into 1st gear, but it will not roll forward unless I give it more throttle than should be needed. When I crack the throttle just enough to get it rolling, I can feel it struggling a bit and it will stop and go without hitting the brakes. Staging the car over the weekend was somewhat of a chore because when I brought the rpms up to 1300 and used the brakes to bring it in, it would shudder really badly. The problem was gone the second I stabbed the throttle.
Any ideas of what this could be?
1968 Chevelle - 3795# with driver
6.0 LSX with TSP 224R cam swap
16psi on 89 octane