Re: Thrust problems with two step in Stock
 

I can tell you I cracked two cast crankshafts using a two step box. I don't use cast cranks or two steps anymore and no problems.

Re: Thrust problems with two step in Stock
 

John,
For years I have put thrust pressure oiling on engines that use a 2 step or Trans brake.
It is a simple modification to the bearing.
Upper thrust bearing only or the block side
side of bearing opposite the notch
rear half of this bearing to the rear of the oil channel
increase the parting line slightly by chamfering(.060)

It will allow some additional oil from the bearing's oil channel to trickle into the back thrust area under pressure.

Re: Thrust problems with two step in Stock
 

In 2017 I fought thrust bearing issues in my Superstocker. I researched everything I could find about it and made several changes. In the rear side of the thrust face I drilled a .060" hile through the thrust face into the oil gallery and then dressed the bearing to allow the pressure fed oil to cover the face. I also added ground straps from the transmission as well as the starter to ensure that there was no chance of a poor ground. Mopar starters bolt to the transmission. I measured the converter pull up and made a .060" shim for the Bell housing to increase my pull up. I switched my main caps to billet caps. I did no transmission modifications and my issues went away.

Darcy Clarke
6254
A/SA SS/EA

Re: Thrust problems with two step in Stock
 

Stock 2046


Back in my s/g days late 80;s alot of the 468" cars Ext. balanced would wear the thrust

flange about 100 runs. The 427 Int. balanced cars never had a problem.
Also make sure you bolt the trans up to the block and spin the converter
freely.
Regards