61 olds vaccuum diagrams?

drgnbumpr63 · November 7th, 2007, 03:34 PM

i havent been posting much just absorbing alot of info. but i was wandering if anyone has any info or could point me in the right direction. i've already purchased an origional shop manual but it didnt have the info i needed. i'm looking for a vaccum diagram for my 61 olds dynamic88. i think i'm missing a line going to my trans and hopefully that will solve my trans problems. thanks in advance for your help.

Starfire61 · November 7th, 2007, 08:01 PM

Are you referring to a vacuum modulator? The Roto-Hydramatic (or Slim-Jim) doesn't have one. There is no direct vacuum input to the trans on these cars. There is a mechanical link (TV rod) that runs from the carb linkage down to the trans on the driver's side that plays an important role in both down & upshifts. In spite of it's appearance, it is exquisitely sensitive to adjustment. Read the appropriate sections of your manual thoroughly & try fiddling with the adjustment. Make sure you keep track of how many time you rotate the attaching yoke as you bring the TV rod in or out, that way you can always adjust it back to where you started. What sort of problems are you having?

drgnbumpr63 · November 8th, 2007, 06:34 AM

thanks for the input. well when i put the car in gear it stalls out, now i'm used to working on classic chevy's and that symptom usually points to a vaccum leak. also on the passenger side of the engine compartment there is a metal tube that comes up from under the car with a small canister on it and then it sort of hooks down and it looks like a vaccum line of some sorts. any idea what that is?

drgnbumpr63 · November 8th, 2007, 07:01 AM

i work for an independant parts jobber and we sell mostly napa parts.

Starfire61 · November 8th, 2007, 08:55 AM

Yeah, the Slim-Jim wasn't exactly one of GM's high points, but the problem you're describing sounds more like a carb issue or perhaps another vacuum problem. Assuming your timing is set right make sure the vacuum advance is working. I had a bad diaphragm in a vacuum advance once & had both a big vacuum leak & lousy performance. Drove myself nuts trying to figure it out. I'd also go through the carb & make sure the floats & other adjustments are set right. Is this a 2-bbl engine?

drgnbumpr63 · November 8th, 2007, 09:31 AM

yep, it's a 2bbl. i just had a local resto. shop rebuild it for me. the problem was there before i had that done. i also just replaced my b/b becuase there was a leak in that, so i'm planning on replacing all of my vaccum lines.

KQQLCAT · November 9th, 2007, 09:47 AM

Your shop manual should have a diagram for vacuum lines mine does and sure helped me out. Mine were all cobled together with "t" conectors. I replaced all the lines in mine also because they were pretty briitle.

Pat

November 7th, 2007, 03:34 PM	#1 (permalink)
drgnbumpr63 Junior Member Join Date: Jul 2007 Posts: 6	61 olds vaccuum diagrams? i havent been posting much just absorbing alot of info. but i was wandering if anyone has any info or could point me in the right direction. i've already purchased an origional shop manual but it didnt have the info i needed. i'm looking for a vaccum diagram for my 61 olds dynamic88. i think i'm missing a line going to my trans and hopefully that will solve my trans problems. thanks in advance for your help.

November 7th, 2007, 08:01 PM	#2 (permalink)
Starfire61 Senior Member Join Date: Dec 2006 Posts: 76	Are you referring to a vacuum modulator? The Roto-Hydramatic (or Slim-Jim) doesn't have one. There is no direct vacuum input to the trans on these cars. There is a mechanical link (TV rod) that runs from the carb linkage down to the trans on the driver's side that plays an important role in both down & upshifts. In spite of it's appearance, it is exquisitely sensitive to adjustment. Read the appropriate sections of your manual thoroughly & try fiddling with the adjustment. Make sure you keep track of how many time you rotate the attaching yoke as you bring the TV rod in or out, that way you can always adjust it back to where you started. What sort of problems are you having? Last edited by Starfire61; November 7th, 2007 at 08:10 PM..

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November 8th, 2007, 06:34 AM	#3 (permalink)
drgnbumpr63 Junior Member Join Date: Jul 2007 Posts: 6	thanks for the input. well when i put the car in gear it stalls out, now i'm used to working on classic chevy's and that symptom usually points to a vaccum leak. also on the passenger side of the engine compartment there is a metal tube that comes up from under the car with a small canister on it and then it sort of hooks down and it looks like a vaccum line of some sorts. any idea what that is?

November 8th, 2007, 07:01 AM	#4 (permalink)
drgnbumpr63 Junior Member Join Date: Jul 2007 Posts: 6	i work for an independant parts jobber and we sell mostly napa parts.

November 8th, 2007, 08:55 AM	#5 (permalink)
Starfire61 Senior Member Join Date: Dec 2006 Posts: 76	Yeah, the Slim-Jim wasn't exactly one of GM's high points, but the problem you're describing sounds more like a carb issue or perhaps another vacuum problem. Assuming your timing is set right make sure the vacuum advance is working. I had a bad diaphragm in a vacuum advance once & had both a big vacuum leak & lousy performance. Drove myself nuts trying to figure it out. I'd also go through the carb & make sure the floats & other adjustments are set right. Is this a 2-bbl engine?

November 8th, 2007, 09:31 AM	#6 (permalink)
drgnbumpr63 Junior Member Join Date: Jul 2007 Posts: 6	yep, it's a 2bbl. i just had a local resto. shop rebuild it for me. the problem was there before i had that done. i also just replaced my b/b becuase there was a leak in that, so i'm planning on replacing all of my vaccum lines.

November 9th, 2007, 09:47 AM	#7 (permalink)
KQQLCAT Registered User Join Date: Oct 2007 Location: Hudson, WI Posts: 102	Your shop manual should have a diagram for vacuum lines mine does and sure helped me out. Mine were all cobled together with "t" conectors. I replaced all the lines in mine also because they were pretty briitle. Pat