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Bird dog · 09-10-2018, 11:03 PM

Some good news today. I don't think I need to pull the T-56 to shim the slave.

When I ordered the transmission (and the clutch, slave, etc), I was told that the GM slave cylinder Im using does not need shims. I have never installed a transmission/clutch/slave before so I wasn't sure I was doing everything correctly. Everything I read on the internet talks about shimming the slave to the proper tolerances.

When we started the truck (it was still on jacks), it wasn't "fluid" into gear and as soon as it went into 1st, the wheels started rolling with the clutch pedal floored. Therefore, I assumed there wasn't enough throw for the clutch to fully disengage.

When I called the vendor (very helpful) he immediately said that I must still have air in the line. Which I now believe to be the case.

Hint to future T-56 installations: order the remote bleeder valve. The GM located bleeder valve for these trannys is impossibly stupid and difficult to bleed. The brake fluid goes everywhere.

09-10-2018, 11:03 PM	#93
Bird dog Registered User Join Date: May 2017 Location: Lynden, WA Posts: 91	Re: '72 gmc Some good news today. I don't think I need to pull the T-56 to shim the slave. When I ordered the transmission (and the clutch, slave, etc), I was told that the GM slave cylinder Im using does not need shims. I have never installed a transmission/clutch/slave before so I wasn't sure I was doing everything correctly. Everything I read on the internet talks about shimming the slave to the proper tolerances. When we started the truck (it was still on jacks), it wasn't "fluid" into gear and as soon as it went into 1st, the wheels started rolling with the clutch pedal floored. Therefore, I assumed there wasn't enough throw for the clutch to fully disengage. When I called the vendor (very helpful) he immediately said that I must still have air in the line. Which I now believe to be the case. Hint to future T-56 installations: order the remote bleeder valve. The GM located bleeder valve for these trannys is impossibly stupid and difficult to bleed. The brake fluid goes everywhere.