Originally Posted by WhiteC1 (Post 1597170079)

Those two metal pipes are supposed to be connected by a short 90° rubber hose. It is part of the coolant path through the throttle body for cold temperature operation. Many people bypass it by connecting the hose that is on the driver side (at bottom of throttle body) directly to the pipe that runs along the top of the passenger side valve cover. Google throttle body coolant bypass and you'll get a lot more info. HTH.

John

Originally Posted by WVZR-1 (Post 1597170412)

See if your 'by-pass' was done this way as mentioned in this post for LT4.

https://www.corvetteforum.com/forums...post1549198158

It's certainly the 'easiest/cheapest' way. If you've bought new hoses it's difficult to maybe sort what you've got

Originally Posted by racerseks (Post 1597170645)

Thanks...Wow, I am surprised that's actually how it's supposed to be. The hose in place, was pretty much mush, but it was kinked up just as the piece I tried to replace it with it is. Is there a party number for that section of hose? Do you know what size hose it is? I'll look into that, and consider doing the bypass. Thanks!

Originally Posted by WVZR-1 (Post 1597170715)

The 'pipes' (poster #2 terminology) ain't related. Throttle body coolant is one on the 'right' in your snapshot and the other on the left side. Visually you should have no issues finding it.

Follow the hose from the top right of the radiator and see where it leads you. I'm guessing to the line that runs towards the rear of the engine along side the intake.

Originally Posted by WhiteC1 (Post 1597172178)

https://cimg4.ibsrv.net/gimg/www.cor...012ad599d2.jpg


I believe my wording ('two metal pipes') may have been a bit confusing... The open rubber hose adjacent to the metal pipe coming out of the passenger side of the throttle body is (I'm assuming) connected to the metal pipe going to the rear of the heads (the steam tube as GM calls it). Those two metal pipes are connected by a short 90 molded rubber hose, which you can still buy from Rock Auto. The driver side tube from the throttle body is connected to the hose which goes to the tee at the top right of the radiator. Many people bypass this circuit and go from the radiator 'tee' directly to the steam tube. This also makes it less of a hassle if you want to remove your throttle body to work on it. With the circuit bypassed, you don't have to drain the coolant to remove the throttle body. I hope this is clearer.

Regards,
John

Originally Posted by WVZR-1 (Post 1597170715)

The 'pipes' (poster #2 terminology) ain't related. Throttle body coolant is one on the 'right' in your snapshot and the other on the left side. Visually you should have no issues finding it.

Follow the hose from the top right of the radiator and see where it leads you. I'm guessing to the line that runs towards the rear of the engine along side the intake.

Originally Posted by racerseks (Post 1597174938)

That's awesome! I was trying to find a diagram like that. Makes a lot more sense now. Know what the part number is, or what it's called exactly? Or a Rockauto link? Their site is huge, and hard to navigate at times.

On the bypass...I have all of that stuff out right now, cleaning it up. If I go that route, would the hose coming from the radiator, that would go to the "steam tube", need to be trimmed at all? Might not be a bad idea, being in Florida, but like to avoid trimming it in case I get the hose, and decide to hook it back that way.

Thank you!

Originally Posted by WhiteC1 (Post 1597176041)

When I did mine, I just clipped a few inches of the hose that went to the driver side port of the throttle body and connected it directly to the steam tube on the passenger side.

Regards,
John