Doug Nash transmission
I am building a '68 Camaro and I already have a 454 that is bored .060" over, an Eagle forged rotating assembly, a .540"/.540" Comp cam and hydraulic lifters, I have a Doug Nash 5 speed with a Long vertigate shifter. I have a Lakewood bellhousing and I've already purchased a Ram billet flywheel, Ram clutch, and a Ram pressure plate. The bearing surface for the throwout bearing on the tranny is about 1.37" OD. My question is what throwout bearing am I going to need to use? I've talked to the tech line at Summit and they have no clue, I called Richmond and they were absolutely no help, and I just want to get this right, so if anybody can help me, I would really appreciate it.
You should be able to use a standard big block throw out bearing, the OD of the transmission input shaft bearing retainer should be the same unless it was changed, as it is interchangeable with a Borg Warner T10. To be sure call Richmond Transmission support and/or check the manual.