help wiring lockup on th350c

The most popular swaps continue to be the R4 and the R4, both of which are good choices and have their advantages. The physical swaps are straightforward, but the one component that still mystifies many people is the throttle-valve T. When connected to the throttle linkage mechanism, a correctly set up T. Designing a pulling arm on your carburetor’s linkage that pulls the T. The challenge really begins when you want the transmission to behave in a specific manner. The physical dynamics of this cable pull can vary radically with different pulling-arm designs which control the rate of plunger travel speed just off idle and determine the shift timing and shift feel of the transmission. We started by removing the carburetor and gaskets and cleaning the intake surface.

GM TH350 Automatic Transmission

It is widely considered to be one of the greatest of automatic transmissions ever built. The TH transmission was introduced in the model year as the successor to the GM Powerglide automatic transmission. The Turbo quickly become known for its strength, versatility and compactness. The HydraMatic transmission was prevalent in nearly all GM, rear-wheel-drive cars and trucks through The Turbo is the shortest and one of the strongest automatics that can be put into a Jeep.

Mar 04,  · and I would always be on the look out for a new van, or have a back up truck ready to go. Now I will have a back up automatic transmission built and ready to install.

But as a rule the r4 holds about 11 Quarts. TV Cable Adjustment Adjusting the TV cable is a relatively easy process that allows you to change the shift points of your vehicle. It will fix a R4 that has really firm shifts, or shifts that feel to sluggish. It is important to make sure that this cable is in adjustment. There is a little semi-circle looking button that you press in. I think this write up is a phenomenal resource on adjusting a TV cable.


The brake will accomplish this at a mere RPM. Going higher on the brake only serves to super heat the oil in the converter and make for inconsistent launches. Going higher on the brake will reduce the reaction time of the car, automatically putting you closer to the light. Then, the only reason for you to go higher on the brake is if you are late on the light.

The R4 transmission was first introduced by General Motors in and used up through It is sometimes also referred to as the 4L The R4 was one of General Motors first over drive automatic transmission and was used in everything from Corvettes to pickup trucks.

Garrett March 2, at 7: And would i be able to mix 93 pump gas with the e85? Jeremiah March 11, at 1: You can either use unleaded fuel or you will be replacing a bunch of oxygen sensors. Kent Waddell March 2, at 8: Eric Duncan March 3, at 2: The intake is 6. Roar Peter Johansen March 4, at 1: Will it support the Bosch 4. Also — will it support both 1 and 3 BAR map sensors? Adam in NewZealand March 4, at 1: I am thinking to use the HP kit, as my motor will put out a max of HP, normally aspirated on pump gas.

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Built for the 6. It overheats and can’t survive in a diesel truck. My trusty ’84 C was still running its original R4 after , miles, and now was subject to the increased torque from my customized naturally aspirated 6. This hot new engine, pushing around non-turbo horsepower out the flexplate, only emphasized the flare slippage I was experiencing on the shift.

The R4 is a good transmission for a retrofit into an older car. It has a to 1 overdrive ratio making even gears great on the street.

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Anyone know how to hook up kickdown tv cable to 700r4 to ls1?

I am attributing that to my errors with the tape measure in my haste to get mine measured so I could get back into a warm house, and I am simply using the published specs. First up, let’s tackle overall length and case length. Overall length is important for the final driveshaft length and the case length is important for the fitment to the transmission tunnel.

This will require shortening the driveshaft by a matching amount, so I know that no matter what I will be paying a visit to the local driveshaft shop, which I would be doing anyway – see the section on Inputs and Output for details on why. That means the transmission should fit nicely without any major clearance issues.

It is very important to set up the Throttle Valve (T.V.) cable linkage properly to prevent damage to your transmission. I can’t stress how important the geometric relationship of the hook up point on the carb for the T.V. cable is with this transmission (see following pages).

If you stick with 87′ and newer the tranny will have a 30 spline input shaft and a 27 spline output shaft. This allowed me to re-use my drive shaft yoke from the Turbo The bolts going into the R4 are M10x1. Metric torque converter bolts are also required to bolt the converter to the flexplate, GM PN The R4 uses a lockup converter. I love my lockup. The lockup converter allows me to have a high stall and cruise on the highway.

If I didn’t have a lockup converter I would be constantly slipping with my converter on the highway. I don’t use the lockup in any other gear than overdrive and I disengage the lockup under full throttle. It’s great you can have your cake and eat it too, high stall for good launch, lock up the converter on the highway and cruise home.

I control the lockup on the converter manually. The wiring diagram shown is how I wired my car. It’s simple I push the switch and the tranny locks the converter. In a braking situation the brake switch disengages the converter for me.

Swapping out a TH350 for a TH700R4

Your hub for horsepower Get first access to hit shows like Roadkill and Dirt Every Day Join free for 14 days now All automatic transmissions use hydraulic pressure to apply friction components; either bands or clutches shift into each gear. The R4 as well as the R and the 4L60 uses a cable called the throttle valve, or TV cable connected to the throttle linkage to establish that pressure.

In many cases, the shifts are poorly timed and may be early and soft, late and harsh, or a combination of both. Downshifts often fall into their own category of weird, and no amount of fooling with the TV cable adjustment seems to make things right.

THR4 Lockup Converter a GM service manual for the year/model transmission you are working with to properly identify the components and wiring hook-up for your unit. Due to the large number of variations from year-to-year and model-to-model of the stock wiring hook-ups, it is STRONGLY RECOMMENDED that you obtain a GM manual and.

You need the low-vac switch so the converter will unlock in low vacuum situations, such as going up hill and heavy throttle. The brake cancel switch unlocks the TCC when the brakes are applied. Trucks that came stock with R4 trannys came with a low-vacuum switch and a brake cancel switch. The stock low-vac switch didn’t let the TCC unlock soon enough with this mod.

I checked the vacuum on the stock switch and it kicked in at 3. The vacuum switch I recommend works real well as it kicks in at 7. The brake cancel switch on R4 equipped trucks also disconnects the cruise control if equipped when the brakes are applied. Are you are doing this mod for one of the reasons I did, to get rid of some of the wiring and vacuum hoses that came on our trucks.

can the v6 trans hook up to a lt1 350

Originally Posted by SheldonZ28 Im knee deep in a ’04 5. My swap will probably be a bit different in wiring due to the fact that im going to be using the electronic throttle, 4L60e, and fabricating my own parts. For mounts, i machined my own at school. The transmission bolts up fine.

Torque converter lockup on the R4 transmission is controlled by the TCC solenoid. When the solenoid is engaged, fluid is applied to the torque converter clutch, creating lockup and a direct link between the engine and transmission. How to Wire a Switch to Lock Up the Torque Converter on a R Transmission. by Robert Moore.

By Rick Seitz August 01, In the hot rodding community, the transmission can sometimes become a neglected component in the driveline. Everybody has their own idea of the perfect transmission, and in many cases they may be accurate depending on their application. I recommend using a high-capacity pan and a transmission cooler for performance-built transmissions. Think of it as cheap insurance. In fact, some of the quickest and most consistent bracket racers rely on a slushbox to achieve their goals.

All three of these gearboxes have earned their stripes over the years, particularly the TH as the unit to rely on in a purpose-built drag car. Even the late-model LS guys have been seen rocking the classic TH on occasion. However, nothing is perfect and everything can be improved upon. To clear the air, we sat down with three of the most respected transmission experts in the business, discussed some of the weak points of all three of these transmissions, and found out what it takes to remedy these issues.

How to Install a Lock-Up Kit 700R4