69L48Z27
Well-Known Member
First, this is not in a B Body. I have a 77 W150 with 318, and full time transfer case. All stock and I’m sure the trans has never been apart.
Fluid is full and looks good.
Symptoms:
- After driving for a while (10+ miles) and the truck is good and hot it will do this, never when cold or the first part of a longer drive. When I sit at a light in gear (more than 30 seconds) and I give it gas to go, it acts like it’s in neutral and then goes into gear. It may get up to 1500RPM. The harder on the gas, the harder it slams. Reminds me of doing a neutral drop. In gear idle is 700RPM.
- Only other issue is cold and reverse. After the truck sits for a week or so it takes a lot of RPM to engage reverse and get the truck to move. Seems like it’s slipping. Once it gets warm or even driven daily it doesn’t do it. I’ve started the truck in neutral and it makes no difference.
Other than that the trans doesn’t slip and it shifts really good, kick down is good too.
So, what am I looking at? Bands, servo, converter, full rebuild? Hoping this is a common symptom of an adjustment needed.
TIA.
Fluid is full and looks good.
Symptoms:
- After driving for a while (10+ miles) and the truck is good and hot it will do this, never when cold or the first part of a longer drive. When I sit at a light in gear (more than 30 seconds) and I give it gas to go, it acts like it’s in neutral and then goes into gear. It may get up to 1500RPM. The harder on the gas, the harder it slams. Reminds me of doing a neutral drop. In gear idle is 700RPM.
- Only other issue is cold and reverse. After the truck sits for a week or so it takes a lot of RPM to engage reverse and get the truck to move. Seems like it’s slipping. Once it gets warm or even driven daily it doesn’t do it. I’ve started the truck in neutral and it makes no difference.
Other than that the trans doesn’t slip and it shifts really good, kick down is good too.
So, what am I looking at? Bands, servo, converter, full rebuild? Hoping this is a common symptom of an adjustment needed.
TIA.