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| | | | Joined: Mar 2010 Posts: 13 New Guy | | New Guy Joined: Mar 2010 Posts: 13 | My 65 with a 3 speed manual tranny only goes into 1st gear when I am at almost a dead stop. If you are rolling at any speed at all, it will grind when dropping down from 2nd. I've never had a tranny that wasn't synchronized, is this what I'm dealing with? Didn't really think at this late date they were still making them that way. I've learned to deal with it this way, but it is annoying at times.
Dan | | | | | Joined: Feb 2002 Posts: 12,029 Cruising in the Passing Lane | | Cruising in the Passing Lane Joined: Feb 2002 Posts: 12,029 | then you've never had a pre-68 3 speed, none had a syncro 1st until 68 - double clutch it if you feel you need to downshift before you stop  Bill | | | | | Joined: Feb 2007 Posts: 434 Shop Shark | | Shop Shark Joined: Feb 2007 Posts: 434 | And in addition--check your clutch linkage and maybe try tightening it up a bit.
It is easy to do (at least on a 66 GMC), just crawl under it and tighten up the nut with your fingers. My experience was there was some slack in the linkage and I tightened up just until the slack is out--no more problems.
Finally, come to a complete stop before bringing into 1st gear.
R-Bo
1959 Apache 1/2 ton Big Window, Short bed Fleetside (under reconstruction)
1966 GMC 305V6 in the family
| | | | | Joined: Mar 2010 Posts: 13 New Guy | | New Guy Joined: Mar 2010 Posts: 13 | none had a syncro 1st until 68 That's great news Bill, good to know it operates as intended! then you've never had a pre-68 3 speed All my pre-68 Chebbies were slip and slide Powerglides. But I do have a 64 made by the other brand that starts with an F. Fully synchronized tranny in that one, surprises me that my Chevy doesn't. I feel much better now knowing I don't have to pull the tranny. Thanks for the quick response, Dan | | | | | Joined: Jun 2004 Posts: 8,597 Riding in the Passing Lane | | Riding in the Passing Lane Joined: Jun 2004 Posts: 8,597 | Yes, the F word vehicles started useing a full syncro 3 speed in 64.
They say money can't buy happiness. It can buy old Chevy trucks though. Same thing. 1972 Chevy c10 Cheyenne SuperIn the Gallery Forum | | | | | Joined: Oct 2009 Posts: 426 Shop Shark | | Shop Shark Joined: Oct 2009 Posts: 426 | Borg Warner t-16 was a synchronized 3 speed used in the mid 60's GM. Mostly high HP big block cars though. | | | | | Joined: Feb 2007 Posts: 230 Shop Shark | | Shop Shark Joined: Feb 2007 Posts: 230 | Your 3 speed in that year did not have a synchonized 1st gear. The only way you can drop it into 1st when rolling is to play with the accelerator until you can match the speed of the gears in the tranny and then drop it into 1st. 2nd and 3rd gears are synchronized by a large synchonizer hub. | | |
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