C3 Vette Registry - The Best Resource on the Net for C3 Vettes! C3 Vette
Forums -> C3 Engines
Not Logged In! Login or Register!  Users Online: 27 / Help 
Features  Find C3 Parts on ebay in only 2 or 3 clicks!  | Add YOUR C3 to the Registry

Supporting Vendors
CorvetteClothing.com
Bair's Corvettes
Volunteer Vette Products
VetteBookStore.com
Mid America Motorworks

C3 of the Month
None Current
Enter Yours Today!
Online C3 Show
13
C3s are Registered

Vanity Plates
ITLFLY
riddj
Featured Links

Buy Now
How To Rebuild Corvette Rolling Chassis 1963-1982
How To Rebuild Corvette Rolling Chassis 1963-1982


Corvette Masterpieces: Dream Cars You'd Love to Own (Hardcover)
Corvette Masterpieces: Dream Cars You'd Love to Own (Hardcover)


The Corvette Factories: Building America's Sports Car (Hardcover)
The Corvette Factories: Building America's Sports Car (Hardcover)


Corvette 50th Anniversary
Corvette 50th Anniversary



| Hide Signatures and Profile Pics

 New Topic New Topic Post Reply Reply New Poll New Poll Search     Search Page [1]  
12/15/13 4:17am - Original Message: 'What is the correct location for the temp sender on a 72 350?'
HighDesertDave
Former Member
- Send Private Message


Carson City, NV - USA

Vette(s):
Numbers matching 1972 350 4 speed, silver pewter body with blue interior

Joined: 12/4/2013
Posts: 239
Just curious, but the PO has the temp sender installed in the drivers head rather than the intake. Now if I recall, the temp reading at either head will be higher as its the hotter coolant prior to entering the radiator vs. the front of the intake manifold (where every chevy and Moapr V8 I've ever owned has its sender). I think, the intake is getting freshly cooled coolant out of the radiator and this is the temp you see on your gauge. so where is the stock location for the sender? Intake or head?

Thanks,
Dave


____________________________________
My Christmas present to ME! Bought Sat 11-30-2013. 72, 350 4 spd, Silver with blue interior...Can't you just hear Pablo Cruz playing in the background?

 Reply Reply  Quote Reply w/Quote
 
Support C3VR!
Suport our advertisers
12/15/13 11:04am - Reply: 'Re: What is the correct location for the temp sender on a 72 350?'
apasbigal
Former Member
- Send Private Message


goldens bridge, NY - USA

Vette(s):
1972 T-Top 350 auto, matching numbers,Blue, ac

Joined: 11/3/2003
Posts: 498
My stock(?) 72 350 is located adjacent to drivers side head -front spark plug. Big Al

|UPDATED|12/15/2013 8:04:47 AM (AZT)|/UPDATED|


____________________________________

 Reply Reply  Quote Reply w/Quote
12/15/13 11:29am - Reply: 'Re: What is the correct location for the temp sender on a 72 350?'
Adams' Apple Lifetime Member
Lifetime Member
Moderator
- Send Private Message


Duncanville, TX - USA

Vette(s):
#1-1974 L-48 4spd Cp Med Red Metallic/Black deluxe int w/AC/tilt/tele./p/w-p/b/ Am-Fm/map light National/Regional/Chapter NCRS "Top Flight" #2-1985 Bright Red/Carmine Cp.L-98/auto Member: NCRS, NCRS Texas, Corvette Legends of Texas

Joined: 11/8/2003
Posts: 19449
Single wire temp sensor for the gauge is in the ds head. If equipped with the Transmission Controlled Spark(TCS) system, there will be two wire temp sensor in the ps head. LATE model, ECM cars have a temp sensor in the thermostat housing, or the front intake area. Thumbs Up

____________________________________
Joel Adams
C3VR Lifetime Member #56    
My Link


(click for Texas-sized view!)
             NCRS

"Money can't buy happiness -- but somehow it's more comforting to cry in a CORVETTE than in a Kia"
 Reply Reply  Quote Reply w/Quote
12/15/13 7:57pm - Reply: 'Re: What is the correct location for the temp sender on a 72 350?'
HighDesertDave
Former Member
- Send Private Message


Carson City, NV - USA

Vette(s):
Numbers matching 1972 350 4 speed, silver pewter body with blue interior

Joined: 12/4/2013
Posts: 239
well that settles that. I was hoping the PO had moved it. The engine runs hot. Its new and still tight but shouldn't be running at 190-215 when its 50 out. 

____________________________________
My Christmas present to ME! Bought Sat 11-30-2013. 72, 350 4 spd, Silver with blue interior...Can't you just hear Pablo Cruz playing in the background?

 Reply Reply  Quote Reply w/Quote
12/16/13 8:28am - Reply: 'Re: What is the correct location for the temp sender on a 72 350?'
Adams' Apple Lifetime Member
Lifetime Member
Moderator
- Send Private Message


Duncanville, TX - USA

Vette(s):
#1-1974 L-48 4spd Cp Med Red Metallic/Black deluxe int w/AC/tilt/tele./p/w-p/b/ Am-Fm/map light National/Regional/Chapter NCRS "Top Flight" #2-1985 Bright Red/Carmine Cp.L-98/auto Member: NCRS, NCRS Texas, Corvette Legends of Texas

Joined: 11/8/2003
Posts: 19449
Welcome to Sharkville, Dave....LOL
Since these cars are chin breathers, they tend to run a wee bit hotter than nose breathers. Make sure all of the seals are in place around the radiator, and shroud(you do have a shroud, don't you?). Make sure the radiator and A/C condenser(if equipped) are clean. Check to see if the air dam is in place, and not damaged. Check the fan clutch to see if it is weak. If any one of these things are not right, the engine will run warmer than "normal". Frankly, 190-200 isn't out of the question at idle.


____________________________________
Joel Adams
C3VR Lifetime Member #56    
My Link


(click for Texas-sized view!)
             NCRS

"Money can't buy happiness -- but somehow it's more comforting to cry in a CORVETTE than in a Kia"
 Reply Reply  Quote Reply w/Quote
12/16/13 2:51pm - Reply: 'Re: What is the correct location for the temp sender on a 72 350?'
F4Gary Gold Member
Gold Member
- Send Private Message


Grapevine, TX - USA

Vette(s):
1972 LT-1 convertible with factory air.

Joined: 8/26/2006
Posts: 862
Could also be the thermostat or timing.  You can advance the timing on these cars a lot more than the old factory setting.  Mine 72 LT-1 is set at 17BTDC.

____________________________________
 Reply Reply  Quote Reply w/Quote
12/16/13 5:14pm - Reply: 'Re: What is the correct location for the temp sender on a 72 350?'
HighDesertDave
Former Member
- Send Private Message


Carson City, NV - USA

Vette(s):
Numbers matching 1972 350 4 speed, silver pewter body with blue interior

Joined: 12/4/2013
Posts: 239
Ok good stuff to look at. I can tell you this, its a new brass core rad with new pump, fan clutch and a 160 thermostat. Which is too cold. There is a shroud but the shroud is sitting behind the rad without any kind of seals between it and anything. No seals to the rad core, no seals to the mounting points. I was wondering about that and thought about making a better shroud...but maybe I'm missing some efficiency by not having the seals. A pic of a properly sealed shroud would be just perfect...if anyone can provide? Big smile
I'll have to check the timing when it warms up enough to fire the engine....still hibernating in our below freezing fall.
Thanks,
Dave

____________________________________
My Christmas present to ME! Bought Sat 11-30-2013. 72, 350 4 spd, Silver with blue interior...Can't you just hear Pablo Cruz playing in the background?

 Reply Reply  Quote Reply w/Quote
12/18/13 2:09am - Reply: 'Re: What is the correct location for the temp sender on a 72 350?'
HighDesertDave
Former Member
- Send Private Message


Carson City, NV - USA

Vette(s):
Numbers matching 1972 350 4 speed, silver pewter body with blue interior

Joined: 12/4/2013
Posts: 239
Bingo....no air dam. Had to look at them on ebay to figure out what should have been under there. Bingo again, no seals around the shroud to radiator. I have the steel shroud. I do have the seal from the underside of the hood to the top of the core support. Looking at Eklers I only see 2 seals for the shroud to rad. Does this sound correct?
Also, are there any seals around the radiator to core support or something other than the shroud?
Thanks,
Dave


____________________________________
My Christmas present to ME! Bought Sat 11-30-2013. 72, 350 4 spd, Silver with blue interior...Can't you just hear Pablo Cruz playing in the background?

 Reply Reply  Quote Reply w/Quote
12/27/13 10:48pm - Reply: 'Re: What is the correct location for the temp sender on a 72 350?'
alohajohn
Former Member
- Send Private Message



Vette(s):
1972 T Top, Mille Miglia Red, auto, ac, power windows, power steering, tilt/tele, power brakes, black leather..

Joined: 3/10/2013
Posts: 24

Hi,

Looks like you have got the correct advice and for what it's worth my base engine '72 350 has the temp sender on the drivers side cylinder head although I notice that there is a plug in the right side head in the same location...not sure what that's for.!!!

I had my original engine fully re-built about 300 miles ago and it still runs nice and cool, about 150+[also run a 180 degree thermostat and had the radiator removed and cleaned out]


John.



____________________________________
 Reply Reply  Quote Reply w/Quote
12/28/13 2:08pm - Reply: 'Re: What is the correct location for the temp sender on a 72 350?'
Norsky Lifetime Member
Lifetime Member
Moderator
- Send Private Message


Twin Lakes, CO - USA

Vette(s):
SOLD - "The Toy" - 1970 Convertible
SOLD - "The Beast" - 1990 ZR-1 (#682)
"BLKBRRD" - 1978 Trans Am, 400ci/285hp, 4 spd, Black w/black interior, Hurst t-tops

Joined: 1/23/2002
Posts: 6712
HighDesertDave said: ...  The engine runs hot. Its new and still tight but shouldn't be running at 190-215 when its 50 out. 

With a 160 degree thermostat there is definitely something not doing its job, especially with the outside ambient temp at 50.  All of the seals around the radiator and shroud will help some as will the chin spoiler.  With a new radiator I'm going to assume the hoses are either new or in good shape.  What shape is the water pump in?  Swapping in a high flow pump would help the circulation rate some.

____________________________________
Jim Olson 

"The Toys"...!!!  Save the Wave!
 Reply Reply  Quote Reply w/Quote
12/28/13 3:58pm - Reply: 'Re: What is the correct location for the temp sender on a 72 350?'
F4Gary Gold Member
Gold Member
- Send Private Message


Grapevine, TX - USA

Vette(s):
1972 LT-1 convertible with factory air.

Joined: 8/26/2006
Posts: 862
alohajohn said:

Hi,

Looks like you have got the correct advice and for what it's worth my base engine '72 350 has the temp sender on the drivers side cylinder head although I notice that there is a plug in the right side head in the same location...not sure what that's for.!!!

I had my original engine fully re-built about 300 miles ago and it still runs nice and cool, about 150+[also run a 180 degree thermostat and had the radiator removed and cleaned out]


John.



The one on the right side head is for the Transmission Controlled Spark system that no one uses anymore.


____________________________________
 Reply Reply  Quote Reply w/Quote
 New Topic New Topic Post Reply Reply New Poll New Poll Search     Search Page [1]  
 Forums -> C3 Engines
(Moderator: Adam Wartell, Norsky, Adams' Apple)
 

 
Official C3 Vette Registry Community:
Home | Forums | Email | Who's Online | Clubs | Events | Member Stats

Other Official C3 Vette Registry Areas:
Members | Research | Shop | My Account | About C3VR
 

Corvette is a registered trademark of the General Motors Corporation(GM) & Chevrolet Motor Division. Vette Registries, LLC is responsible for all site content (except for member submitted content or where otherwise noted) and does not claim or imply that Chevrolet or GM is responsible for Official C3 Vette Registry content. Vette Registries, LLC is independent from GM and is not affiliated with, sponsored or supported by GM.  Copyright/trademark/sales mark infringements are not intended, or implied and are in fact used to support GM, Chevrolet and Corvette

Official C3 Vette Registry content is Copyright 2001-2017, Vette Registries, LLC. Content may not be reused without written consent. All Rights Reserved. NS

Corvette (Vette) Model Years on this site: 1968 1969 1970 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 30