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Drivetrain => Transmissions => Topic started by: summercruzn on October 14, 2009, 12:28:05 PM

Title: ST400 aggressive going into gear
Post by: summercruzn on October 14, 2009, 12:28:05 PM

Hi guys,

Just wondering if someone can tell me why my car seems very aggressive when i put it in gear. It's like a damn monster especially when putting it in reverse.

It feels kinda cool but i'm worried it might cause problems.

Car is 65 special thin pillar and here is the driveline...

* 1965 - 401 stock
* 1965 - ST400 rebuilt stock
* The rear is 10bolt stock (don't know the ratio) and originally had V6/ST300 in front of it.

Thank you,
Gary
__________________
65 special 401/st400
65 skylark GS post (#matching)
64 special vert V6
64 special vert V8
68 Chevelle SS396 (missing engine)
 :violent1:

Title: Re: ST400 aggressive going into gear
Post by: Loren At 65GS on October 14, 2009, 06:27:30 PM

Gary,
Stock rear end ratio for the v6 would have been 3.08.
You don't mention idle speed, if too high , it could cause the harsh shift feel putting the car into gear.
Another thought , adjustment of the stator switch .

Loren

Title: Re: ST400 aggressive going into gear
Post by: summercruzn on October 14, 2009, 10:16:32 PM

Hi Loren,

Thanks to you and a few others on V8 i'm going to investigate a few things tomorrow. The idle speed is a bit above the 500rpm mark on a tach i just installed so that might be a bit high. Another thing that might be wrong as i'm told is the 12v for the VP may not be there for high stall due to wiring etc.

I'll let you know if i resolve this tomorrow.

Thank you,
Gary

Title: Re: ST400 aggressive going into gear
Post by: Brian on October 15, 2009, 07:26:19 AM

My guess is the switch on the throttle linkage that switches the torque convertor to high-stall mode is not adjusted properly, is not working, or has a wiring problem.  The power for the variable pitch comes off the same fuse as the windsheild wipers, so if your wipers are working, you should have power up to the orange wire coming out of the harness along the firewall that feeds the variable pitch circuit.

Title: Re: ST400 aggressive going into gear
Post by: summercruzn on October 15, 2009, 08:20:07 AM

Thanks Brian, i'm pretty sure now that this is the problem. I will verify it tomorrow morning. I do recall the wipers not working so this comment you made points exactly to that, the fuse is probably blown.

I'll let you know.

Cheers,
Gary

Title: Re: ST400 aggressive going into gear
Post by: WkillGS on October 15, 2009, 11:21:50 AM

You should be able to hear the solenoids click when they are energized. All it takes is 12v applied to the terminal on the side of the tranny.