4l80E, What to be done to tow heavy, as in HEAVY!!

4l80E, What to be done to tow heavy, as in HEAVY!!

This is an easy conversion, reuse your transfer case and drive shafts as they are now. You get all of this plus no core charge. Proper installation of the throttle valve cable on Factory and after-market carburetors or fuel injections. This information applies to all R4, 4L60 and R transmissions. Throttle valve cable adjustment instructions, numbers 4, 5 and 6. The throttle valve cable must be hooked up in this manner so the pressure will rise faster off idle and slow down at heavy throttle. If the pressure cable is pulled in a more even manner the pressure will be too low at light throttle. Failure to hook-up the throttle cable in this way will burn the three-four clutch pack up fast. The throttle valve cable controls transmission pressure. Adjusting this cable is the most important step when installing a R4, 4L60 or R transmission.

GM Gen 3/LS Series Engine to GM TH350/700r4 Transmission Kit

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.

Find helpful customer reviews and review ratings for B&M Torque Converter Lockup Kit at Read honest and unbiased product reviews from our users. easy to hook up nice. Read more. Top critical review. See the critical review › out of 5 stars R4 overdrive.

Report John answered 5 years ago The test is: Once you start the truck the pressure should drop to about when you rev the engine it may increase slightly but may not and if you do a road test it should be If it pressurizes good but drops below 11 when you initially turn the key on then I would suspect there’s a good chance the diaphragm in the regulator has ruptured. If it doesn’t put out good results to begin with then we could suspect the pump.

Did you blow through the fuel filter after removing it? If there was excessive restriction it could have easily fried the pump due to the filter causing the fuel to “back up”.

Planning a 700R4 Transmission Swap..

The transmission swap in my ’81 is finally completed. Well I had some bigger hurdles to overcome but the car is running again. The main obstacle was that the R4 does not just bolt in and the only way to make it work was to modify the transmission crossmember.

Early muscle cars were fitted with overdrive transmissions and a popular swap was the R4 transmission but the most important part was the Throttle Valve cable setup which determines how well.

By Jefferson Bryant January 23, Hot rods are all about personality. The transmission rarely gets much more than a single thought: For the purpose of this story, we are going to throw out the whole stick-shift thing; this story is all about high-performance overdrive automatics. Modern automatic transmissions go far beyond the old slushbox technology inside the typical TH or C4 you find in most hot rods. With great power comes great responsibility…oh, wait, wrong story.

Knowing that these guys have more overdrive gearboxes running around some seriously heavy-hitting powerplants, we knew these were the guys to hit up. Gearstar uses top-shelf components in their performance transmissions. Red oxide clutches, performance steels and billet servos make a big difference in the longevity and power handling of a transmission. Avoiding Parasitic Loss It is a well-known fact that transmissions eat up power; it is just a fact of gearhead life.

The less efficient a transmission is, the more you have to put into the engine to make up for it. This can be a real drag pun intended.

700r4 you need it

It would have fit him to a T. And then it all went wrong. With better lines than the more shrunken-appearing Continental and Mark VI, it should have been a great success. But the gas crisis adversely affected sales of all cars, and even luxury makes like Cadillac and Lincoln were no exception. Still, it was a great success compared with its Lincoln Town Coupe competitor, of which a mere 7, were built for

May 06,  · Hook the vacuum hose to ported vacuum on the carb. Put the choke switch in the pipe plug outlet for 4th gear. Wire a fused wire from the ign circuit through the vacuum switch, through the choke switch & to the trans. connecter.

When the brakes are applied the relay switches to pin 87 and the circuit is broken, thus unlocking the torque converter. A common Bosch-type relay used. If you do not understand basic wiring, get help from someone who does or research it first. It’s not rocket science. The Relay Applications Guide under ‘Resources’ below has the required info, for example.

When pressure is applied, the switch closes the internal contacts to complete the circuit. Pressure turns them “on”, no pressure they are “off”. The pressure switch with 1 pole is self-grounding. This means a wire connected to it will be grounded through the switch case when pressure is applied to the switch. The 2 post switch can pass current through the switch when pressure is applied.

No voltage passes through the switch when there is no pressure. These switches are not designed for use on the outside of the transmission case because they are made with bleed holes in them to equalize the pressure from the heat of the ATF they are exposed to. For use on the outside of the transmission, use switches rated for external use to avoid possible fluid leakage.

Turbo 350 to 700R4 swap – 71 Camaro

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. For some strange reason the low-vac switch doesn’t let the TCC unlock soon enough with this mod.

The 4LXX automatic overdrive transmissions are a great way to “get shifty” no matter what you use your car for. We got the top tricks from pros.

We offer several versions of this trans for applications up to horsepower. This trans has a low first gear ratio of 3. This trans was built with a Chevy only bolt pattern, but we have a package for Buick, Olds, Pontiac, and Cadillac people so you can enjoy the benefits of this excellent transmission too. We also provide a custom rebuild service for those interested in keeping the original trans but need an upgraded version to handle additional power mods. Call for more details. The built-in display and keypad lets the user adjust and tune for their specific application and diagnose problems should they occur.

The controller can can drive an electronic speedometer as well. No further adjustment or maintenance is needed. Properly tuned, your vehicle should have better gas mileage during cruising, and be more responsive to the throttle. Catalog PT R4HD Our heavy duty replacement model for vehicles originally equipped with the or those wanting to upgrade to an overdrive with a maximum of horsepower. This model features over 25 upgrades and modification to improve durability and performance and comes with our heavy duty lock-up torque converter with stall speed up to rpm.

This transmission is calibrated to bring out the best of this engine’s power and torque curves and includes out ZZ4 Torque-Max torque converter. If you are considering this engine for your car or truck this trans will bring out the best in its performance and economy.


My R4 was sourced from a ’92 Buick Roadmaster with Chevy engine. Thankfully the advancement of the ’92 version of the R4 already had mine as a theoretical “one wire” set-up. In the hope of having others avoid issues I had, I’m relaying the following information: The R4 had many valve body configurations.

Nov 11,  · You’ll need to hook up your TV cable to the carburator. Know what you are doing here, or have someone who knows do it, or you’ll burn the trans up quickly. I’ve had one in my 71 1 .

In his original gearboxes, he used a hodge podge of Muncie and T10 architecture. I’d be really surprised if you had “Muncie” gears from him. Can you get tooth counts? On to crash boxes! If you look at your gears, underneath the actual helical gear teeth, is a small ring of little saw-teeth. This is your clutching ring or engagement teeth. In a “crash box” you file every other tooth, or every 2 teeth off.

The sliding clutch is splined on the inside, and these splines mesh with the engagement teeth on the gear. Now you’re “in gear. To do this, you remove every other tooth, and every other spline. Some people remove two splines and skip one. Then you take the bronze synchronizer ring and either throw them aside, or mill the engagement teeth off to suit. Often times the synchronizer springs are omitted as well.

First gear usually isnt modified, because you only downshift into 1st.

TH350/TH400 to 700R4 Conversion

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