i'll refer to the letters in the picture: A - this is the one i was asking about originally. i thought it might be the coolant temp. I again reference the Kings of Carbureted Big-Blocks, NHRA Pro Stock racers, to illustrate the value of proper engine cooling. Serpentine belt requires the use of a reverse-rotation water pump for a 1988-and-newer engine. (Photo Courtesy Be Cool). Shut the engine off, leave the electric pump and fans running, and you’ll be ready for the next round of eliminations in a few minutes. What are the two sensor for in the side of the heads? Find CHEVROLET 7.4L/454 Coolant Temperature Sensors with N Engine VIN Code and get Free Shipping on Orders Over $99 at Summit Racing! Sensor GM 6. That used to be true when all cars had stock carburetors that were jetted as lean as possible for best fuel economy, and before the introduction of synthetic motor oils. Big-block Chevy water pumps were produced in two lengths, short and long. It’s an old wives’ tale (more likely an old husbands’ tale) that your engine has to be thoroughly warmed up to make maximum horsepower. Short-style pumps were used in passenger cars through 1968 and in Corvettes through 1974, while light-duty trucks had them until 1972. If you liked this article you will LOVE the full book. Modern high-performance and racing carbs are calibrated richer than stock, and EFI systems have coolant temperature sensors that richen the fuel delivery when temps are low. An overheated engine can have far more serious consequences than just an embarrassing stop along the roadside to let things cool off—blown head gaskets, burned or tuliped valves, scuffed bores, and burnished piston rings are all possible if you keep driving when the temp gauge gets to the far side of “H.” The cooling system is usually the last thing on any performance enthusiast’s list of things to upgrade, but if you design and execute your system with a bit of forethought and knowledge, it does more than just keep you from overheating while cruising the local car show; it helps your Rat motor make more power.
Written by Tom Dufur and Posted with Permission of CarTechBooks. Here you can see a Be Cool aluminum dragster radiator mounted horizontally behind a 555-cube Rat motor. For the life of me I can not find a replacement one that is an exact replacement. That is the alternate place for the temperature sensor.
Remember to use a reverserotation water pump if you go with one of the serpentine belt systems. • This may be as much as 15 hp, depending on the pump and pulley system used. Chevy Muscle Car Tech Tips, Guides, Articles & How-To. Another way to prevent getting this page in the future is to use Privacy Pass. The new aaw harness has a wire for a temp sensor on the driver side. Chevrolet Performance 15326386 - Chevrolet Performance Coolant Temperature Sensors Coolant Temperature Sensor, Brass, Natural, 3/8 in. A Meziere billet aluminum electric water pump bolted to the front of the engine handles coolant circulation. Sender needs to match year and with or without gauges, probably available from a GOOD parts store, although they may have to order it for you.
Many aftermarket water pumps are more than just lightweight versions of the stock pump.
The car has a 73 454 installed. Performance & security by Cloudflare, Please complete the security check to access. Lowspeed drivability is poor only because the carb is tuned for the proper air/fuel ratio when the engine is thoroughly warmed up. There is no such thing as keeping the engine “too cool” for best performance, so let’s look at how your cooling system can be designed to meet that challenge. If there's a sending unit on the right side head, it will probably be easier to extend the wiring along the firewall to get to it.
Most street cars use belt-driven water pumps, and the stock Chevy crankshaft and water pump pulleys work fine if you already have them. Pretty sure the thread is 1/2" NPT, if not 3/8" NPT. Synthetic motor oils can provide the lubrication necessary for even the most powerful big-blocks with much less viscosity, which reduces the parasitic drag on engine components. (Photo Courtesy Edelbrock), When you make more power, you need an improved cooling system. Look near the thermostat housing. Your IP: 184.108.40.206
If you keep on livin', you're gonna get old. Edelbrock pumps are available as-cast, polished, or with their chrome-like EnduraShine finish for you show-and-shine guys. So, I have a 1994 Chevy Silverado 1500 2wd with a 350 cu in TBI with a bad coolent temp sensor. There is one in each head and it has one green wire coming out of it. I have the two wire coolant temperature sensor in … If you’re piecing your big-block together, it may be easier to find matching pulleys from the aftermarket industry. Conventional motor oils are thick when they are cold, and the spinning crank and other internal engine parts have to wade through a pool of this thick liquid in the crankcase, so that warm, thinned oil offers less resistance than cold oil. If you are at an office or shared network, you can ask the network administrator to run a scan across the network looking for misconfigured or infected devices. Filed Under: Chevy Tech Tips, How to Build Killer Big-Block Chevy Engines, HOW TO BUILD KILLER BIG-BLOCK CHEVY ENGINES, How to Build Killer Big-Block Chevy Engines, GM Turbo 350 Transmission Rebuild Troubleshooting Guide, 344-409 Headers and Exhaust Guide – Step by Step, How to Rebuild Your GM Turbo 400 Transmission: Removal Guide, Big-Inch Chevy Small-Block Stroker Cheat Sheet, How to Build a Chevy Small-Block Circle Track Racing Engine: Break-In, Regular Maintenance and Teardown, 348-409 Engine Assembly Guide – Step by Step, How to Rebuild Your Big-Block Chevrolet Engine Step-by-Step: Engine Removal and Teardown, How to Choose What C2 Corvette to Restore, C3 Corvette: Upgrading Performance Cooling Systems, C2 Corvette Restoration by the Numbers: What to Look For. sensor. You may be building a hot rod to serve as a home for your big-block powerplant, but for maximum performance you have to keep your cool.
http://www.chevelles.com/showroom/showgallery.php/cat/500/ppuser/15214, VerticalScope Inc., 111 Peter, Suite 901, Toronto, Ontario, M5V 2H1, Canada. You may need to download version 2.0 now from the Chrome Web Store. If you have one there you can either modify your wiring or just swap it with the pipe plug in the head. From searching I have done today it sounds like the sensor would be located on the head just below the valve cover about in the middle? Lowspeed drivability is poor only because the carb is tuned for the proper air/fuel ratio when the engine is thoroughly warmed up.
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