Manually shifting turbo 400 - The 1947 - Present Chevrolet & GMC Truck Message Board Network

crawdad · 10-18-2004, 09:35 PM

I started to jump in on the other thread below, but thought it best to start another since my problem is a little different. My transmissing will pull and shift fine as long as I have it in drive. When I was driving it home right after I bought it, I noticed that if I pulled in down into a lower gear, it didn't seem to make a difference. If it was shifting down, I couldn't tell it. I did notice after I got it home that it was a couple quarts low on transmissing fluid. Would that be the likely cause of my problem, or do I need to look at something else. I've since put fluid in it, but haven't taken it back out on the road because I don't have a tag for it yet. Any ideas appreciated.

JimKshortstep4x4 · 10-19-2004, 07:59 PM

Two quarts of fluid will make a big difference. I suspect that it will work right unless you have something major wronmg.

Jim

Longhorn Man · 10-19-2004, 08:36 PM

Did the linkage feel sloppy at all?
Is there a chance you were in second gear when you dropped it down?

Fred T · 10-19-2004, 09:26 PM

Two big no-nos with a 400 are running low on fluid and running hot. Both can prove fatal in a hurry.

crawdad · 10-19-2004, 09:41 PM

When I went to get the truck, I decided to drive it home and check out as much as I could on the road. Had my brother following me with the trailer just in case. I had to come down some pretty steep grades, and I dropped the shifter down one notch from drive to second (?) to decrease my speed a little, and just to see if it would gear down. I wasn't going very fast at all, maybe 20-25, and when I pulled it down, I couldn't tell any difference at all in engine speed. In fact, once when I stopped for gas, I got ready to leave and accidentally pulled it down into 2nd instead of drive. I was way down the road before I happened to look down and realize I wasn't in drive. Couldn't tell by the sound, engine speed, or anything. Don't know if this information tells you anything or not. I know it's almost impossible to trouble shoot something like this over the internet, but I appreciate your ideas. It gives me something to check.

10-18-2004, 09:35 PM	#1
crawdad Senior Member Join Date: Sep 2004 Location: Georgia Posts: 614	Manually shifting turbo 400 I started to jump in on the other thread below, but thought it best to start another since my problem is a little different. My transmissing will pull and shift fine as long as I have it in drive. When I was driving it home right after I bought it, I noticed that if I pulled in down into a lower gear, it didn't seem to make a difference. If it was shifting down, I couldn't tell it. I did notice after I got it home that it was a couple quarts low on transmissing fluid. Would that be the likely cause of my problem, or do I need to look at something else. I've since put fluid in it, but haven't taken it back out on the road because I don't have a tag for it yet. Any ideas appreciated. __________________ 2012 Silverado LT 1500, 5.3, 6 speed auto '86 SWB C-10 Silverado

10-19-2004, 09:26 PM	#4
Fred T Cantankerous Geezer Join Date: Aug 2002 Location: Bel Aire, KS Posts: 6,264	Two big no-nos with a 400 are running low on fluid and running hot. Both can prove fatal in a hurry. __________________ Fred There is no such thing as too much cam...just not enough engine.

10-19-2004, 09:41 PM	#5
crawdad Senior Member Join Date: Sep 2004 Location: Georgia Posts: 614	When I went to get the truck, I decided to drive it home and check out as much as I could on the road. Had my brother following me with the trailer just in case. I had to come down some pretty steep grades, and I dropped the shifter down one notch from drive to second (?) to decrease my speed a little, and just to see if it would gear down. I wasn't going very fast at all, maybe 20-25, and when I pulled it down, I couldn't tell any difference at all in engine speed. In fact, once when I stopped for gas, I got ready to leave and accidentally pulled it down into 2nd instead of drive. I was way down the road before I happened to look down and realize I wasn't in drive. Couldn't tell by the sound, engine speed, or anything. Don't know if this information tells you anything or not. I know it's almost impossible to trouble shoot something like this over the internet, but I appreciate your ideas. It gives me something to check. __________________ 2012 Silverado LT 1500, 5.3, 6 speed auto '86 SWB C-10 Silverado

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10-19-2004, 07:59 PM	#2
JimKshortstep4x4 Senior Member Join Date: Jul 2001 Location: Muskegon,MI,USA Posts: 6,026	Two quarts of fluid will make a big difference. I suspect that it will work right unless you have something major wronmg. Jim

10-19-2004, 08:36 PM	#3
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,690	Did the linkage feel sloppy at all? Is there a chance you were in second gear when you dropped it down?



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