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LT1-LT4 Modifications
1993-97 Gen II Small Block V8

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Old 04-23-2010, 10:22 PM   #1
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Default Freeze plug size for water pump

Does anyone know the freeze plug size to use on the water pump for when you delete the hvac..ones the fitting that gos in right by the thermstat base and then theres another on the same side just on the bottom of the water pump...also whats the 3rd one on the drivers side..the hose just gos from the 90 fitting to the rad?

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Old 04-23-2010, 11:33 PM   #2
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I'll be plugging mine tomorrow, I just used a digital caliper to measure the holes. I'll post the size of the plugs I use tomorrow. The 3rd hose is in your case is the oil cooler delete hose. You can remove that hose and cap off the rad if you want. Not sure if you've already removed the metal pipes that come out of the water pump but the easiest way to get them out is to hammer them out.
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Old 04-24-2010, 08:42 PM   #3
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I think most people loop the heater hose. I would probably just use coolant caps over the fittings, but removing them and welding them shut might look nicer.
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Old 04-25-2010, 12:20 AM   #4
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alright did some searching and the driver side uses a 1/2inch freeze plug and the pass sides are 3/8ths..
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Old 04-25-2010, 12:24 PM   #5
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Quote:
Originally Posted by RamAir95TA View Post
I think most people loop the heater hose. I would probably just use coolant caps over the fittings, but removing them and welding them shut might look nicer.
Thats what I originally did but I hated the way it looked. I was gonna have them welded up but the guy that was suppose to weld it up bitched out. So frost plugs it is.
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Old 04-25-2010, 05:13 PM   #6
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i agree i would rather just put plug in it and not have to worry about another line that could blow and that is just looped
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Old 07-06-2010, 09:34 AM   #7
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Where do you get the coolant caps from? I've looked at Autozone, O'Reilly's and Pep Boys, but can't find a 1/2" cap.

Also, what are you guys doing about the steam line from the back of the heads? I currently have it plumbed into the looped heater line, but there seems to be a leak at the T I'm using; probably due to the contorted lines.
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Old 07-06-2010, 11:08 AM   #8
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Old 07-12-2010, 11:00 PM   #9
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my setup for the steam lines gos into the top line/port on the water pump on the pass side..that is the heater return lines spot so i run it back into that.

i use -6 a/n line i have a 90 in each head and then a T fitting more on the pass heads side and run the -6 into the water pump housing..
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Old 07-13-2010, 03:40 PM   #10
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Thanks for the replies guys. I capped the heater inlet with a 3/4" rubber coolant bypass cap, and then connected the stock steam line to the heater return line via brass barbed fittings and a 90 degree elbow.
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Old 07-13-2010, 03:40 PM
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94, camaro, delete, freeze, heater, hose, lt1, plug, plugs, pump, racing, remove, sbc, size, sizes, water, z28


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