1969 C3 Chevrolet Corvette: Specifications, VIN, Options, Performance, Recalls, & More
Answer A is wrong. The pump will usually make a whining or whirling noise. Answer B is correct. Hardened seals allow fluid past when cold, but as the vehicle warms the seals begin to function again. This transmission will need an overhaul to fix this problem. Answer C is wrong. Perform a stall test to check the torque converter’s performance. Always check to see if it is recommended by the vehicle manufacturer before proceeding.
How to Assemble Ford C4 Transmissions: Cruise-O-Matic / Select Shift
Fuel control system Other parts affecting the combustion process emission devices, etc. Each has a characteristic effect on vacuum and you judge their performance by watching variations from normal. It is important to judge engine performance by the general location and action of the needle on a vacuum gauge, rather than just by a vacuum reading. Gauge readings that may be found are as follows: Normal Engine Operation At idling speed, an engine at sea level should show a steady vacuum reading between 17″ and 21″ HG.
A quick opening and closing of the throttle should cause vacuum to drop below 5″ then rebound to 21″ or more.
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Set the float level. An incorrect float level can give you all kinds of symptoms and problems, so get this one set right off the bat. Most Holleys have a sight plug on the side of the float bowls, and have externally adjustable floats. Adjust the float level until fuel just barely starts to dribble out of the plug, then lower it until the dribble barely stops. The slotted screw in the center of the adjustment is the locking feature — loosen it and turn the hex nut CW to lower the float level, CCW to raise it.
Make sure your Power Valve is in the ballpark. This means that the power valve will open and start dumping fuel into the discharge when manifold vacuum hits 6.
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The other vacuum ports on your carb are probably ported, which might make your transmission do some odd things when you try and coast. Ported vacuum shuts off when the throttle plates are closed, so no vacuum The brake booster runs off of manifold vacuum, which is always highest when the throttle plates are closed, and tapers off as you step on the gas. That’s what your transmission needs. Tony 64 I was just wondering if anyone has gone off the carb.
C3 Corvette Corvette Overview The Chevy Corvette arrived on the coattails of critics who had been anything but kind to the inaugural C3 Corvette .
Do your speakers go pop, pop when you turn it on? Some of your speakers are dead? There are three ways to go. There are challenges to installing an aftermarket receiver in a late-C4 originally equipped with the up-level, UU8 or U1F Delco-Bose music systems. The most significant are: While it is possible to modify the sound system to achieve this compatibility, doing so requires soldering skills along with electronic components not included with aftermarket receivers. Installation of an aftermarket stereo in the latter is more difficult because the wiring work involved is more time consuming.
This kit eliminates the need for advanced wiring work or with any metal or plastic fabrication work required to install a modern aftermarket receiver in a C4 and what remains is easily accomplished by do-it-yourselfers. The unique Zip Products wiring harness bypasses the OE tuner and connects the Pioneer direct to the stock Delco-Bose speaker units along with the stock radio antenna.
When we were done, we had a system which sounded better than the original. The Pioneer offered such modern conveniences such as:
How to Disassemble Ford C4 and C6 Transmissions: Step by Step
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Diagnosing Torque Converter Problems: Image courtesy of Bankspower. Some of the more common scenarios include: If the vehicle exceeded its towing capacity for a prolonged period, then torque converter damage can result. If the internal components are simply old and worn, then this will of course cause the torque converter to fail.
As torque converters wear, the vanes will bend. This can result in sluggish shifting or even failure to drive.
Turbo 350 Transmission Vacuum Modulator
It has been said in our forums that a Ford Mustang Convertible 5. Swap the mounts to opposite sides Left-Right. The convertible engine mounts and hardtop engine mounts are not the same. The Ford Mustang GT uses the same engine mount. Ford Mustang Convertible 5.
For ’67, the C4 became the “Select-Shift” with a conventional P-R-N-D shift pattern and a new valve body. This is the way the C4 remained until production ended in
On c6s and c4s this is at the back passenger side of the trans on the bottom. The c6 I had was stock, and it would shift at like at WOT. So whenever I was racing, I’d disconnect the vacuum hose and it would shift at around I have since blown up that c6 so I replaced it with a reverse manual shifting c4, so no longer any need for the vacuum line.
So you ran it straight from the vacuum tree on the intake manifold to the lines for the transmission? I have 2 lines going to the transmission By the way it is a c4. You sure one isnt a cable for your shifter or an oil line for a trans cooler? There should only be one vacuum line going to your trans.
LS Swap Automatic Transmission Guide
The sport-performance two-door four-seat Cabriolet convertible mantle is now taken by the current Audi S5 Cabriolet and new Coupe. Unlike previous generations of the S4, only the sedan will be imported to the United States and Canada. The S4 now compares more closely with the BMW i. Previously unavailable enthusiast driver aids are now optional, such as Audi’s Sport Rear Differential, active steering and adaptive damping suspension part of the Audi Drive Select Package.
The front axle was moved by 6.
Date: 10/15/ PM Ref: Moroso 4 Vane enhanced vacuum pump Moroso 4 Vane enhanced vacuum pump P/N Includes vee belt pulley and mounting bracket Used in nice condition, previously fitted to a street eliminator car.
The exhaust ports and holes are also in the same location. All LT1 heads use self-aligning rocker arms. The intake manifold is proprietary to the LT1, however, a standard small block Chevy intake can be modified to work. There are no coolant crossovers on the intake, coolant is routed through the back of the cylinder heads through a crossover tube.
All LT1 engines use center bolt valve covers. The LT1 and LT4 intake manifolds appear the same from above, all LT4 intakes are powder coated red from factory, but the difference is in the intake ports. LT4 intake ports are raised, and use different cylinder heads and intake port gaskets. The intake manifolds do not have the fuel rail crossover in the front like the intakes, however the intakes can use the fuel rails.
You can use the fuel rails on all of the intakes, but you can only use the fuel rails on the later model intakes.
Repair Automatic Transmission Pressure Test Most transmission cases have test ports to retrieve hydraulic pressure readings for the line, clutch and servo circuits. They have bolt like plugs screwed into them. Locate the desired port and screw the pressure fitting in where the plug was.
C3 Corvette Corvette Overview By , the United States economy was on the mend from the global economic recession. The recession, which had been caused in part by the oil crisis, had caused.
Transmissions Turbo Action transmissions are custom built with the greatest of care in mind for you the customer. Turbo Action has the performance and reliability record of over thirty-eight years for custom building automatic transmissions. Our custom building means quality, durability and performance. Turbo Action’s automatics are specially built with many innovative engineering designs.
Requires vacuum modulator hook-ups if transmission equipped originally with modulator. Maintains stock shift pattern. Competition Transmissions Engineered, designed and built for the ultimate in performance, dependability and durability. Extensive modifications to the oil circuitry, added lubrication features, special high gear alterations, specialty components and care. Some models not for street use. Certain models available with automatic features including electronic control, but basic models are manual control only.
Shift pattern will vary according to model.
HONDA Civic Service Manual
The C4 and C6 transmissions are equipped with an adjustable vacuum diaphragm assembly. A similar adjustable diaphragm has been released for service with the FMX transmission. The vacuum diaphragm assembly has an adjusting screw in the vacuum hose connecting tube The inner end of the screw bears against a plate which in turn bears against the vacuum diaphragm spring. All readings slightly high or all readings slightly low may indicate the vacuum unit needs adjustment to correct a particular shift condition.
For example, on a C4 transmission, if the pressure at 10 inches of vacuum was psi and the pressure at 1.
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Versions of the C4 have also been produced for big-blocks. It is one of the easiest automatic transmissions to rebuild and modify because it is so simple and there are a lot of seasoned racers and builders who know a lot about this transmission and how to get it to perform. There are different approaches as to how to build a C4 and what to put in it. Seems everyone has a different opinion about how to build one for street and competition.
For a comprehensive guide on this entire subject you can visit this link: You can use the social sharing buttons to the left, or copy and paste the website link: Even with the best factory parts, the C4 is a hardy box that will serve you for years and thousands of miles with regular fluid and filter changes. Street and weekend-racing C4s can easily handle to hp without breaking a sweat. From to , the C4 had a. In , Ford went to a larger. Ideally, you can find a complete or-newer C4 transmission core that already has these changes because very little changed through the end of C4 production in This means there is an abundance of C4 cores available from 10 years of production so you can build the kind of transmission you need for street or strip.
There were two C4 shift patterns employed during its production life.