1988 Chevy shifts late

hmmm....it would seem as if your trans is having a bit of a hard time shifting so its sort of waiting before it can shift to the next gear (possible the gear system is having a problem shifting due to it sticking to some gears) i'd have to say....a mechanic can take a look to see why its seemingly shifting late at high RPMs to me IMO the trans is just having a hard time shifting with gears wanting to stick together making the whole trans have a hard time shifting

You need the bolt hole alignment from the transmission to see if it will work. Certain transmissions only align with certain motors. Next is you'll probably need to transfer all the electronics, a 2007 engine control computer is most likely highly advanced compared to the 1997 computer. Then there's the questions of will the transmission shift correctly to match the engine RPMs.

i take it is a automatic check gearbox transmission fluid or the torque converter may be at fault

Chevy automatic transmission workings (Bob Hale) - Yarchive

yarchive.net/car/transmission.html

When a sufficiently high RPM is reached then the weights hit stops and do ... There are two shift valve assemblies, one for the 1-2 shift and the other for the 2-3 shift. .... Thehigh RPM factory governor appears to have about 1/3 less metal in the ...

Possible Transmission Issue - weird shift points/high RPMs ...

thespeedfreaks.net > Jeep Talk/Tech > Tech Questions

Oct 2, 2012 - Thread: Possible Transmission Issue - weird shift points/high RPMs ... throttle pressure, but seems to blow past the 1st gear shift point and revs up to 4500 RPM or so then shifts. .... The 1 - 3 shifts actually felt pretty natural.

[PDF]Simple Shift Installation and Tuning Guide for Ford Trans ...

https://www.powertraincontrolsolutions.com/.../download.php?...Simple...

Transmissions have "synchros" that adjust the speed when shifting from one gear to the next, because the engine's RPMs, while correct for, say, 1st gear, are too high to shift to 2nd gear.

If you're really careful, and an expert driver, you can shift a manual transmission from one gear to the next without using the clutch at all.


However, you seem to have a transmission problem with the 1-2 synchros.

low fliud pressure in transmission..check levels and change fluid/filter and retry vehicle.

Have your transmition fluid and filter changed that should take care of it. I have ran into that problem before and that handled it.

You mean you can drive your car but the problem you have hard shifts at high rpms (3500+) . what shift 1 or 2 or 3 ....... and how if your engine cold or hot .

your transmission has several electrical items in it from speed sensor to shif solonoids your car is getting hot because you are running high rpms you might want to pull some codes off your car with a diagnostic machine

Hello, If you have an automatic transmission put it in neutral and push the brake and while your doing that try to shift into 2WD. If it still won't move then try backing up about 30 feet and then try and shift. If you have a manual transmission make sure your pushing the brake while you're trying to shift and back up if needed. Good luck, let me know what you find.