wierd cooling system problem noise ? - Page 3 - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**The Rocknrod** · 01-31-2019, 01:30 PM

That engine is a 1965 model 327 (or 283?), using a bypass? Old style heads? Hello?

**Captainfab** · 02-01-2019, 12:00 AM

That factory bypass was used on mostly medium duty trucks back in the day but some light duty trucks came with them also.

Quote:

Originally Posted by The Rocknrod

That engine is a 1965 model 327 (or 283?), using a bypass? Old style heads? Hello?

**The Rocknrod** · 02-01-2019, 06:57 AM

Good info. That's something I never realized, so it's not new for small blocks. Interesting.
I looked at 5 different 60's small block cast steel intakes on eBay they all have the bypass nipple attached. I never noticed that before.

**Captainfab** · 02-02-2019, 12:07 AM

The factory small block thermostat bypass you posted a pic of, actually uses a piece that installs under the thermostat housing which the bypass hoses attaches to, What you were seeing on those 5 cast iron intakes is likely the heater hose nipple.

**The Rocknrod** · 02-02-2019, 05:23 AM

Good info there, thank you,

**Captainfab** · 02-03-2019, 12:43 AM

Post #3 in this thread shows what I am talking about.

http://www.67-72chevytrucks.com/vboa...d.php?t=780199

AustinBelair · 06-12-2024, 10:39 PM

I am losing my MIND trying to read and learn all of this. So far Google has me deep down a rabbit hole haha. So, I think I can run a regular reverse flow long pump (Like from a TPI 3rd Gen camaro) and just run a nipple in the top of the water pump to the 3/8 NPT water bypass in the front of the Edelbrock Vortec intake that I have?

SunSoaked · 06-12-2024, 11:00 PM

That's it.

01-31-2019, 01:30 PM	#1
The Rocknrod Moderator Join Date: Aug 2011 Location: China Spring, TX Posts: 7,280	Re: wierd cooling system problem noise ? That engine is a 1965 model 327 (or 283?), using a bypass? Old style heads? Hello? __________________ Master Chief, US Navy, Retired 1964 C10 Step-side Short Bed - In Progress 2009 2500HD Duramax LTZ 1948 GMC Panel 1956 Big Window Stepside 1953 5 Window Chevy Stepside 1932 Coupe New Seat Foam for Bench Seats?

02-02-2019, 12:07 AM	#4
Captainfab 60-66 Nut Join Date: Mar 2007 Location: Coeur d'Alene, Idaho Posts: 23,246	Re: wierd cooling system problem noise ? The factory small block thermostat bypass you posted a pic of, actually uses a piece that installs under the thermostat housing which the bypass hoses attaches to, What you were seeing on those 5 cast iron intakes is likely the heater hose nipple. __________________ Power Steering Box Adapter Plates For Sale HERE Power Brake Booster Adapter Brackets For Sale '63-'66 HERE and '67-'72 HERE and '60-'62 HERE and "60-'62 with clutch HERE Rear Disc Brake Brackets For Sale. Impala SS calipers HERE Camaro Calipers HERE D52 Calipers HERE 6 Lug HERE Hydroboost Mounting Plates HERE

02-02-2019, 05:23 AM	#5
The Rocknrod Moderator Join Date: Aug 2011 Location: China Spring, TX Posts: 7,280	Re: wierd cooling system problem noise ? Good info there, thank you, __________________ Master Chief, US Navy, Retired 1964 C10 Step-side Short Bed - In Progress 2009 2500HD Duramax LTZ 1948 GMC Panel 1956 Big Window Stepside 1953 5 Window Chevy Stepside 1932 Coupe New Seat Foam for Bench Seats?

02-03-2019, 12:43 AM	#6
Captainfab 60-66 Nut Join Date: Mar 2007 Location: Coeur d'Alene, Idaho Posts: 23,246	Re: wierd cooling system problem noise ? Post #3 in this thread shows what I am talking about. http://www.67-72chevytrucks.com/vboa...d.php?t=780199 __________________ Power Steering Box Adapter Plates For Sale HERE Power Brake Booster Adapter Brackets For Sale '63-'66 HERE and '67-'72 HERE and '60-'62 HERE and "60-'62 with clutch HERE Rear Disc Brake Brackets For Sale. Impala SS calipers HERE Camaro Calipers HERE D52 Calipers HERE 6 Lug HERE Hydroboost Mounting Plates HERE

06-12-2024, 10:39 PM	#7
AustinBelair Registered User Join Date: Apr 2005 Location: Austin, Texas Posts: 296	Re: wierd cooling system problem noise ? I am losing my MIND trying to read and learn all of this. So far Google has me deep down a rabbit hole haha. So, I think I can run a regular reverse flow long pump (Like from a TPI 3rd Gen camaro) and just run a nipple in the top of the water pump to the 3/8 NPT water bypass in the front of the Edelbrock Vortec intake that I have? __________________ My mother is a recent cancer survivor and this truck build is for her

02-01-2019, 06:57 AM	#3
The Rocknrod Moderator Join Date: Aug 2011 Location: China Spring, TX Posts: 7,280	Re: wierd cooling system problem noise ? Good info. That's something I never realized, so it's not new for small blocks. Interesting. I looked at 5 different 60's small block cast steel intakes on eBay they all have the bypass nipple attached. I never noticed that before. __________________ Master Chief, US Navy, Retired 1964 C10 Step-side Short Bed - In Progress 2009 2500HD Duramax LTZ 1948 GMC Panel 1956 Big Window Stepside 1953 5 Window Chevy Stepside 1932 Coupe New Seat Foam for Bench Seats? Last edited by The Rocknrod; 02-01-2019 at 08:23 AM.

06-12-2024, 11:00 PM	#8
SunSoaked Registered User Join Date: Dec 2011 Location: Yuma Arizona Posts: 1,526	Re: wierd cooling system problem noise ? That's it.



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