Author Topic: Turbo 350  (Read 2549 times)

Offline 32bantam

  • Full Member
  • ***
  • Posts: 114
    • View Profile
    • SS3 Race Team
  • Your Best Time: 6.87 at BG 2013 aiming for 7.0
  • Your Track: Empire Dragway, NY
  • Your Vehicle: 32 Bantam altered
Turbo 350
« on: September 04, 2017, 01:20:50 PM »
Hi Dan....I have a friend that has a turbo 350 in a street car that is upshifting, under normal driving, way too soon.
What do we adjust?  Govenor springs or weights?
Thanks
Steve Walczak

Offline gregm784

  • Sr. Member
  • ****
  • Posts: 381
    • View Profile
    • Means Racing
  • Your Engine: 387 Dart/Brodix
  • Your Track: Famoso Raceway
  • Your Vehicle: 1997 Stirling 200" FED
Re: Turbo 350
« Reply #1 on: September 04, 2017, 03:01:43 PM »
TV cable adjusted properly?
Greg
El Dorado County, CA
www.meansracing.com

Offline 32bantam

  • Full Member
  • ***
  • Posts: 114
    • View Profile
    • SS3 Race Team
  • Your Best Time: 6.87 at BG 2013 aiming for 7.0
  • Your Track: Empire Dragway, NY
  • Your Vehicle: 32 Bantam altered
Re: Turbo 350
« Reply #2 on: September 04, 2017, 03:23:52 PM »
Kick down cable on the T350...yes, set full out at full throttle.
Steve Walczak

Offline crider

  • Full Member
  • ***
  • Posts: 199
    • View Profile
  • Your Best Time: 5.01
  • Your Engine: BBC
  • Your Track: farmington, Nc
  • Your Vehicle: in progress
  • General Location: south east
Re: Turbo 350
« Reply #3 on: September 04, 2017, 05:47:25 PM »
Try turning the screw in the modulator in a little bit

Offline bikeguy307

  • Full Member
  • ***
  • Posts: 241
    • View Profile
Re: Turbo 350
« Reply #4 on: September 05, 2017, 06:16:51 PM »
The governor controls the up shifts in conjuction with the modulator to a point. The kickdown cable takes over at WOT to carry the shifts beyond the governer/modulator cross over, as well as force a down shift at slower speeds.

Other than WOT, upshifts occur when governer pressure crosses modulator pressure. You can raise upshifts by raising modulator pressure, making the governer go higher to match it. This is done by screwing the modulator adjuster in. This is more minor adjustment 4 to 6 mph.

GM made governers with several weight combos in them. The heavier the lower the shifts the lighter ones had a higher shift. Going from the heaviest to lightest can make close to 15mph difference. If more is needed you can do a governer weight kit, or you can get a governer from a 700R4 corvette/police unit. They are the same as a 350, but the weight package is the lightest of all GM governers.

Offline 32bantam

  • Full Member
  • ***
  • Posts: 114
    • View Profile
    • SS3 Race Team
  • Your Best Time: 6.87 at BG 2013 aiming for 7.0
  • Your Track: Empire Dragway, NY
  • Your Vehicle: 32 Bantam altered
Re: Turbo 350
« Reply #5 on: September 05, 2017, 06:24:27 PM »
Thanks Dan......I will pass this on to him. See ya this friday
Steve Walczak