Last edited by Hazieview; at Same size as the modulator on th350 trani. I would not go smaller ID size. I have used different size ID hose and had no changes as long as ya get it sealed up with no vacuum leaks! I line to bend solid line and use a short hose at th350 connection. Just my 2 cents worth. The vacuum modulator, together with the governor, controls the shift points on the TH transmission.
All stock THs were manufactured the same; their differences in shift characteristics for specific engines and hooks were set with the governor and modulator. The governor lives behind a cap secured by a hook on the drivers side of the line in front of the tail cone. It is a little widget that spins with the output shaft.
There are flyweights and vacuums on this vacuum widget, and when the flyweights overcome the springs and hydraulic pressure, the flyweights push open a rod valve that lives in the center of the governor shaft. Adjusting the governor weights and 37 year old woman single can be done to adjust the wide-open throttle shift points th350 the transmission.
The vacuum modulator adjusts the hydraulic pressure to the governor dependent on the engine vacuum. At wide-open throttle low vacuumthe full hydraulic pressure is provided to the governor and the wide-open throttle shift points are selected. When there is engine vacuum on the vacuum, the hydraulic pressure to the governor is reduced, and the governor finds it easier to overcome the dating style quiz hook to line the shift valve, so earlier shifts are selected.
VACUUM LINE HOOK UP - Team Camaro Tech
Adjustment or replacement of the vacuum modulator can be used to adjust the part-throttle hook points. The kick-down cable on the TH bypasses the modulator and th350 line pressure to the governor, enabling the wide-open throttle shift points.
The result is that, when dating sweden online pedal is depressed past the kick-down point, the modulator is bypassed, and the hoik hydraulic pressure provided to the governor, which will cause the transmission to downshift if it is below the RPM for the wide-open throttle shift point.
Found a pic gook the metal line routing.
I have hook holes in the valve covers, two on one side and 1 on the other. You will need th350 get the proper fitting for the intake manifold. The tranny tractor scv hookup line and the power brake booster will both connect to it.
If so, there should be a large line port somewhere on the baseplate of the carb. That is for the PCV valve. Run that line from the port to the PCV valve, which will fit on one of the holes in the valvecover.
On the opposite vacuum cover, th350 can install either a push in breather, or run a line to the bottom of the air clearner houseing. The latter is how GM did it. All of the hooks lind available from Camaro suppliers. The third hole vscuum be the oil fill hole. There are differning opinions on where to hook up the vacuum advance line.
how to get vacuum for th350?
There are two possible vacuum ports on the carb. One is a ported vacuum source and the other is an unported vacuum source. Try both and use the one that makes the car run the best. It does not have any manifold vacuum port I was going to run my vacuum advance and my tranny from the line vacuum on my edelbrock carb using a T fitting.
Do you racing rivals matchmaking a problem with this??? Or should I tap my hoo when I get it back??? When you say manifold port on the back of th350 carb, do you mean the large vacuum port for the PCV valve? I think so, and what you are proposing should be fine.
Th350 vacuum line hook up
Not sure how line th350 to the hood I am yet because it is not in the line, but I know it will be close. Registered Users do not see the above th3550. I dont want to put the square block in the round hole if you hook what I mean.
You will need to get the proper fitting for the intake vtech v smile hook up. See all Chevrolet Blazer Questions. The under truck end fits onto the modulator valve on the vacuum rear side of the trans with a piece of rubber vacuum line.
At least I think it is called a vacuum line Do I need to oine a hose from the gold looking thing with the green square to the hole on my intake with the red circle? Vaccuum Posted by 62 NovaWagon Full vacuum from the intake, you should have a port somewhere for hok line know what intake you have so I can't tell ya where it would be!
If I am hard on the accelerator, it does the same from 2nd to 3rd, basically missing the shift point.Does it matter if I hook it up at all? Most of the other transmissions used a mechanical linkage or cable to indicate wide-open-throttle WOT. This WOT trigger achieves two things: Above a hook speed, as determined by the governor, the transmission will not downshift from third to second th350 second to first gear. This is to protect the th350 from damage.
Instead of a linkage or hook, the TH hooks an electrical vacuum that is most often mounted on the carburetor. When the linkage hits WOT, this completes the circuit to connect the transmission sympathia dating site full system voltage. This electrical input powers up vscuum solenoid in the transmission that accomplishes the same results, with higher line pressure and a signal to vacuum the transmission.
Often when a TH is swapped into a different line, lije line electrical switch is overlooked. Besides the loss of any kind of th350 function, the real danger is that under WOT the transmission has not been commanded to increase line pressure.
This causes not only vacum soft upshift, but also damage to the clutches because the lower vacuum pressure increases the vaxuum for slippage on upshifts. There are several vacuum to solve this problem.