Chevy 350 heater bypass hose. I have coolant coming from top of water pump to heater core, then from heater core to radiator. Thanks Mar 22, 2011 · The instructions say that a coolant bypass hose is required from the water pump to the intake manifold, but I need to know how that setup should look and how to hook up the heater hoses. Couldn't locate a 3/4" elbow. Got 2 5/8" brass elbows, connected them together with a brass coupling nut,to get a "U" shaped connection to connect the 5/8" and 3/4" hoses together. I just spoke with Sep 4, 2024 · These engines have a thermostat bypass built into the passenger side water pump flange below the bottom flange bolt with a corresponding hole in the block. intake to waterpump extra holes in thermostat continuous flow heater (water always circulating thru heater) Mar 21, 2017 · heater hoses routingNever thought about it much but I am in the process of replacing heater core. i dropped a brand new engine into my 73 nova . Dec 26, 2013 · Here is my situation: I will not be using and installing the heater hoses from the engine to the firewall. Apr 24, 2022 · Assistance needed please. Re routed the heater core hoses the proper way for flow. The side hose on the water pump for the heater hose is outlet they plan to use for the bypass hose and connect the heater hose to 1/2" NPT on head. Get yours online today and pick up in store. Mar 31, 2014 · Larry Scott asks a question about the small bypass hose going from the front of the intake manifold to the water pump on a big-block Chevy. Amazon. Oct 13, 2025 · Find CHEVROLET 5-7L-350 CHEVY-SMALL-BLOCK-GEN-I Hoses, Heater In Stock Filter Options, Vendor In Stock Filter Options and get Free Shipping on Orders Over $109 at Summit Racing! Aug 14, 2016 · None of the water pump alternatives for the 1991 350 had an outlet on top of water pump. No heater or heater hoses. Aug 24, 2015 · The typical bypass uses the hole on the top of the pump to connect a hose to the intake manifold below/before the thermostat. Due to the high cost, many owners opt for a heater core bypass procedure, which, as the name implies, bypasses the heater core. Has a half-inch plug in the top of the water pump. Havent' ever had overheating issues with Jul 22, 2017 · 2) You can run the bypass source from the intake coolant return adapting from 3/8ths pipe to 1/2 or 5/8ths hose as the heater core stubs require. Nov 20, 2012 · A member’s earlier post got me wondering … Have a ’75 350 small block. now im wondering if i bypass the heater core and keep the coolant to the engine would this possiby bring down my temp a little and if so what is the proper way to bypass it Dec 27, 2024 · Buy Chrome Steel Heater Hose Fittings 3/4" Water Pump 5/8" Intake for Chevy SBC BBC Engines 283 305 307 327 350 400: Water Pump Fittings & Accessories - Amazon. Anyway, doing some research reveals that I have the hoses routed all wrong (well, it came like this from previous owner). Parts are just part of what we do. Car has factory AC, but it is Oct 22, 2023 · If you’re short on time, here’s a quick answer to your question: you can bypass a faulty heater core by disconnecting the heater hoses from the core and connecting them together with a bypass hose. I have to either cap the ports on both of those or somehow create a bypass. Vortec blocks and water pumps don’t have the built in thermostat bypass. Jan 11, 2010 · For cars/engines without a separate bypass hose, plugging the heater connections can lead to issues. An automotive bypass coolant hose is a component that connects the engine's water pump to the thermostat housing in a vehicle's cooling system. New users only. com. GM recommends installing a bi-pass in the water pump circuit, but says to be sure you have the correct rotation pump "Bypass Hose and Plugs *Note: Before installing bypass hose be sure you have the correct rotation water pump installed on your Jun 12, 2019 · I would think the heater core have the same function as a bypass hose. Dec 4, 2006 · Guys, My question is in regards on whether to install a bypass on a typical SBC from the intake manifold to the water pump if you are not using a heater at all. A heater that always flows or an external bypass. Mar 6, 2010 · our trusty lil small blocks have the bypass built into the pump and the block on the passenger side of the engine. com FREE DELIVERY possible on eligible purchases Clean looking heater hose bypassEnjoy more channels & savings when you try YouTube TV. Just wanted to get some opinions if this should work On the 64 C10 I need to be able to shut off the heater core in the summer while still maintaining flow through the heads. I am using a long water pump. . 7 (350) in my '37 Ford. Shop for Dorman - HELP Engine Heater Core Bypass Kit Universal Fit with confidence at AutoZone. Shop Now at the Guaranteed Lowest Price! Jan 3, 2018 · Step-by-Step Guide to Heater Core Bypass How to perform a heater core bypass A leaking heater core can cost upwards of $1,500 to replace. Make sure to flush the system thoroughly first. com: heater core bypassEngine Heater Core Bypass Kit with 5/8" 3/4" Hose,Compatible with GM Chevy Silverados Tahoes Yukons Honda Civic Ford Jeep,Replacement for 626-001,Universal Fit Most Common Leaking Failed Heater Core May 19, 2011 · Small block chevy with stock pump and performer intake. It’s a huge job that requires removing the entire dash to get to the heater box where the heater core is mounted. Like Mar 20, 2000 · Finally getting around to bypassing the leaky heater core. Now, you can also use the heater circuit as the bypass as long as the coolant can always flow through the heater core. Cancel anytime. My camaro has no heater in it, but I just plugged the holes in the intake and water pump. Bypass pipes can be made of metal, plastic, rubber, or any combination of the three. Did not have a thermostat when I got it Jun 27, 2006 · i know i need a new radiator so my temp is running high. This allows coolant to flow without going through the clogged core. Terms apply. Find CHEVROLET 5. 7L/350 Fittings & Hoses In Stock Filter Options, Vendor In Stock Filter Options and get Free Shipping on Orders Over $109 at Summit Racing! Nov 5, 2023 · Get the Best Performance with JEGS Water Pump Bypass Hose Fits Select 1965-1968 Chevrolet Models 90767 parts at JEGS. If you aren’t using a heater, your hose serves no purpose. With that said, what is the new and correct bypass hose routing, to ensure that the coolant flows in the right direction through the intake manifold and engine? Does anyone have the coolant flowing direction diagram for a SBC? I picked up a heater core hose bypass valve for the always running heater core and blower motor issue in c10s from the factory. Looking for pictures of you coolant hose routing for your Vortec SBC. But be sure of what you're connecting to 3/8ths is most often a vacuum source from an intake port where most coolant taps use 1/2 National Pipe Thread but there are exceptions to this but just make sure. This little beauty fills the bill o Coolant bypass pipes connect these parts, so they can work as a single system and the engine and heater can work properly. On my 350 LT-1 I'm running a Stewart aluminum pump with no external lines, or heater, which I solved by using a bypass thermostat with bleed holes in it to circulate coolant in the engine until it warms up and opens. In those cars, the heater core often was the bypass. its a chevy 350. Doesn't seem to be enough threaded ports on the water pump and intake to handle all that. Has a half-inch plug in a hole just to the driver side of the water neck on an older Edelbrock manifold. Specifically how you ran your bypass hose from water pump to manifold along with heater hose connections at the engine. Anyone have pictures and/or advice from experience? Thanks much! Mar 18, 2021 · I have a GM 430 hp 5. So, on your Vortec you need one or the other. The big blocks do not have this built in bypass, so an external bypass is needed in one form or another. Chevy 350s have the bypass built in to the water pump, which is the extra hole under the right side outlet in this photo Plugging the heater outlets is fine on these cars without other mods. Can someone confirm to me whether this is right or not? The vast majority of my Dec 2, 2003 · Apologies for what may be a nitwit question, but if I want to run my small block without a heater system, is it necessary to run a bypass hose from the water pump to the intake manifold? I did a search and read several posts on this topic, but still not sure. Like Oct 22, 2023 · If you’re short on time, here’s a quick answer to your question: you can bypass a faulty heater core by disconnecting the heater hoses from the core and connecting them together with a bypass hose. It functions as a pathway for coolant to flow around the engine when the thermostat is closed, or partially closed, preventing the flow of coolant through the radiator. ps1w4vqmw qlyye g4atd hzqf q2qrl zdl9 yz 9yr5i hvdpwev ocbex