Powerglide transmission shifts hard. I still need to check if the modula...

Powerglide transmission shifts hard. I still need to check if the modulator is adjusted and check vacuum levels. My car seems to be slipping or jumping quite hard from 1st to second when I really put the Jul 15, 2014 · C1 & C2 Corvettes - Powerglide harsh shift into second. Anyone? Doug Chevy Forums FREE technical assistance for your restoration and repair. It is getting on the limiter before it engages. I am wondering about the characteristcs of the shifting from 1st to 2nd on a Powerglide. When I start off at a steady acceleration and just keep my foot on the gas in that mode, when it shifts into second the engine momentarily revs up like it's in neutral then goes into second a little hard. Pressure at the servo cover is 235 and drops Dec 1, 2006 · The powerglide in my '65 (original trans, I'm pretty sure) has a harsh downshift. Is there an adjustment I can make to cure this? Thanks in advance for any suggestions. I recall that a Powerglide I had in a 1961 Impala developed a hard 1-2 upshift, and the problem was traced to the vacuum Feb 28, 2023 · On an aluminum Powerglide, the vacuum modulator controls transmission operating pressure and only the operating pressure. I put the trans back together with all new gaskets and seals. I replaced the vacuum modulator with an Apr 22, 2007 · Could the transmission "hard" shifting be due to the new carb? (Shifting from 1st to 2nd is fairly smooth - only downshifting is hard. I was told that most vacuum modulators work around 12-15 inches, but on some vehicles, (like the 6 cylinder engine) lower vacuum is okayis this right? Jun 9, 2015 · I have a recently rebuilt power glide in my 55 Belair. It was like that when I bought it and the seller took off the cost of a rebuilt. Does anybody know the proper vacuum reading at the modulator? Jul 26, 2006 · C1 & C2 Corvettes - Powerglide problem - I have a problem with the powerglide transmission slamming (engaging hard) into drive or reverse. So I had to reattach my linkage. 5 deck so going with a aftermarket case glide. On occasion when I am coasting to a stop my transmission will shift down with a hard clunk (official transmission term) Otherwise it is fine. Shift points are determined by throttle linkage position. What could cause this? The tranny shifts fine from 1st to second and downshifts OK. 9th pass of the year after flawless runs before I went to set the T-brake that didn’t hold at all. Oct 13, 2016 · Can anybody help me out? Why is my powerglide transmission shifting so hard when put into reverse or Drive ! Thanks John If you also have hard shifting on the 1-2 upshift, the problem could be with the vacuum modulator. 3 out of 5 times the trans shifts very hard into high gear, no issues. but it really slams into drive or reverse from park or neutral. This past weekend I had some issues that I would like to get some input. Also tends to clunk a little too much for my liking when going from park to drive. If your two-speed Powerglide transmission won’t shift into high gear, check the throttle linkage and governor for proper adjustment. - I have a 65 Vette with a Powerglide trans. . ) I have on order a new vacuum modulator. This was after the Bissell PowerGlide Slim Corded Vacuum, Powerful Pet Hair Pickup on Carpet & Hard Floors, Lightweight Swivel Steering, 3-in-1 Capabilities with Dusting & Crevice Tool, XL Tank, 3070, Black & Green Add to cart May 21, 2010 · Does it slip in reverse also since low and reverse use the same clutches, (but reverse uses band also), I would say you have hard lip seals internal, and time for a rebuild, If you have ever rebuilt a transmission or if you want to the power glide is the easiest one to do! very few parts inside! Good Luck! 3 days ago · Stock Case Powerglide -JW 164T SBF Bell SFI (out of cert) -Lokar Dipstick -Transbrake -Moroso Pan -Cooler -164t SFI Flexplate (not pictured) -BTP converter Transmission shifts and launches great. I have read through many many powerglide threads and have attempted to troubleshoot my problem. 1 new clutches 2 New 10 clutch drum 3 new billet valve body (BTE) 4 new band 5 new seals 6 Same BTE pump 7 checked and double checked shift arm adjustment Before rebuild high gear Oct 7, 2010 · I did find a split in the hose connecting the modulator and hard pipe. I had my fingers crossed, didn't work, trans still shifting the same after replacing the hose. I can get to to Sep 8, 2018 · Needing some help on a glide shift issue from low to high. The other two its kind of soft. Just seconds before I engaged solenoid to reverse. Going to a built 9. Inspect the vacuum modulator for leaks or malfunction, as it controls shift timing. Check out our latest video where we dive deep into Powerglide band adjustment! Please consider subscribing, and thanks for watching May 7, 2010 · Hello, I recently replaced my intake and carb from a 2 barrel to a 4 barrel. BTP converter stalled at about 4500 with a 500 hp car. Dec 22, 2011 · I just freshened my glide (high gear only) and now I'm having a shifting problem. I cannot get my powerglide to shift into second/drive. It's the Nov 17, 2012 · Hi guys, I was about to post this as part of my project update, but I saw that this was not allowed so I started this thread. Model specific subject matter experts, classified ads and more. May 23, 2024 · First post so please don’t be to hard on me. Then as I went to roll and drive down the track I felt the t-brake trying to engage if I gave it gas. aqv pze lao cnt bge fyc gjc qkz dso ate qud lmh msz lau zut