The 1947 - Present Chevrolet & GMC Truck Message Board Network







Register or Log In To remove these advertisements.

Go Back   The 1947 - Present Chevrolet & GMC Truck Message Board Network > 47 - Current classic GM Trucks > The 1960 - 1966 Chevrolet & GMC Pickups Message Board

Web 67-72chevytrucks.com


Reply
 
Thread Tools Display Modes
Old 07-01-2014, 04:29 PM   #1
Bullett
Registered User
 
Join Date: Dec 2013
Location: Fairfield, Maine
Posts: 302
Is this the original 62' radiator?

I am having overheating problems and am looking at my options. The PO installed a new aluminum radiator before I got the truck but it is not cutting it. After studying it for a minute, it appears like he left the original radiator in the truck and fastened the new one to it. Does this make any sense or am I missing something. It appears like the old radiator is blocking all the air from getting to the aluminum radiator.



It almost looks like the original radiator is integrated right into the front supporting structure of truck. Is it o.k. To pull the original out?
Bullett is offline   Reply With Quote
Old 07-01-2014, 04:39 PM   #2
66Submarine
Registered User
 
66Submarine's Avatar
 
Join Date: Sep 2012
Location: Dallas, GA
Posts: 1,497
Re: Is this the original 62' radiator?

No, the original would be in the same place as the aluminum one. If there's something else in front of it, it's a separate trans cooler or something.
__________________
1965 C30 pickup 350/SM420/4.10's (daily driver) thread
1968 Impala 4 door sedan (future driver project) thread
66Submarine is offline   Reply With Quote
Old 07-01-2014, 05:37 PM   #3
jtrichard
Registered User
 
Join Date: Jun 2013
Location: joshua tree ca.
Posts: 1,484
Re: Is this the original 62' radiator?

what ever that cross flow is its NOT OEM it looks like another radiator i would pull the AL rad out and see just what you have going
jtrichard is offline   Reply With Quote
Old 07-01-2014, 06:46 PM   #4
61_FL_Apache
Who Me?
 
61_FL_Apache's Avatar
 
Join Date: Sep 2010
Location: Royal Palm Beach, FL
Posts: 4,067
Re: Is this the original 62' radiator?

There is only one radiator there.. If there is something else in front of it, it may be an AC condenser or tranny cooler. That alum rad should work fine. You have something else going on causing your overheating issue.

Things I would check: Rad cap, thermostat, lower hose to make sure the spring is still in it.. They can get sucked flat and stop water flow, fan clutch and the radiator itself..

Im running the same style radiator with a 160* t-stat and I have no issues at all.

Show us a few more pics thru the grill to see what may be in front of the radiator.
__________________
Steve

1997 Tahoe LT 4D 2WD (DD)
2001 Blazer 4D 2WD
1961 Apache 10 (sold)
1965 C10 Stepper (sold)
61_FL_Apache is offline   Reply With Quote
Old 07-01-2014, 09:05 PM   #5
Bullett
Registered User
 
Join Date: Dec 2013
Location: Fairfield, Maine
Posts: 302
Re: Is this the original 62' radiator?

Alright, now I have a few minutes, I will tell the rest of the story. O.k., I did a motor change over the weekend. I pulled out the 350 crate motor that came with the truck, which ended up being no good. The cam lobes were worn to the point that it wouldn't even open the valves on a couple cylinders. I figured I was much farther ahead to find a different motor all together that had more of what I was looking for. Long story short, I found a guy that just pulled a nice running motor out of his 1984 chevy 4x4 to do an LS1 conversion. This motor supposedly was a low mile motor with MSD ignition, compared to points ignition, alum. Intake and Holley 4 bbl. carb., compared to a 2 bbl...when I picked up the motor, the PO told me it ran great and produced a lot of power. He said to run hi octane fuel due to the motor having flat top pistons....Sunday, my friend and myself swapped the motors.



The new motor fired right up, which made me very happy. I had yet to even take the truck down the road since I bought it in Dec. due to winter and then the bad motor that the seller failed to mention. Oh well, when you buy a vehicle off Ebay, from the other side of the country, your taking your chances. Oh well. ..so, fast forward to Sunday, the new motor fired right up and idled perfectly. I jump in the truck and take off down the road. The motor then starts to have some pretty major detonation issues. I went and put some new hi test fuel in it and a bottle of octane boost thinking this would cure it. It didn't. In the process of driving it, it eventually starts overheating, up to 225 before I pulled over and shut it down. Also in this process, the rear axles were squealing really loud, especially while cornering. So, needless to say, I'm more discouraged now than before. I did check the diff fluid and it was very low. I bought new synthetic fluid today but haven't had a chance to put it in. I am sure hoping this will solve the issue with the rear. Anyways, back to the detonation problem, I researched that issue and figured out that a high engine temp can really aggravate detonation issues. I figured I would try and take this one step at a time, first step would be to try and get the motor to run cooler, I figured removing the old heat exchanger that seems to be blocking my radiator would be a good start. Now I'm wondering if my engine detonation issues are aggravated by high engine temp. Or is the high engine temp. A byproduct of detonation? I am almost to the point of mothballing the truck til next spring and dealing with it then. It is hard to find the time that is needed to get this truck to where it needs to be. It was a 13 hour day Sunday to do the motor swap.
Bullett is offline   Reply With Quote
Old 07-01-2014, 10:09 PM   #6
AcampoDave
Registered User
 
AcampoDave's Avatar
 
Join Date: Feb 2013
Location: central California
Posts: 2,776
Re: Is this the original 62' radiator?

Bullet, where is your timing set to on the new motor?
AcampoDave is offline   Reply With Quote
Old 07-01-2014, 10:43 PM   #7
Softpatch
Registered User
 
Softpatch's Avatar
 
Join Date: Sep 2013
Location: Vashon WA
Posts: 969
Re: Is this the original 62' radiator?

Pull the Spark plugs take a picture need to see color
Might be a gap issue(35-40ish)is ok
and do a compression check all 8cyl
__________________
My Spelling is Not Incorrect...It's 'Creative'
.
.
1966 C-20 .....Swap 91 G-30(5.7 FI)/4L80E
http://67-72chevytrucks.com/vboard/s...d.php?t=789617
59 Viking Revival .. http://67-72chevytrucks.com/vboard/s...d.php?t=632341
Softpatch is offline   Reply With Quote
Old 07-02-2014, 06:23 AM   #8
Bullett
Registered User
 
Join Date: Dec 2013
Location: Fairfield, Maine
Posts: 302
Re: Is this the original 62' radiator?

O.k., when I get home from work tonite, I will get this information and add a few more details. I don't have a timing light but I will try and pick one up today. Thanks....
Bullett is offline   Reply With Quote
Old 07-02-2014, 08:54 PM   #9
Bullett
Registered User
 
Join Date: Dec 2013
Location: Fairfield, Maine
Posts: 302
Re: Is this the original 62' radiator?

O.k., haven't had time to do the spark plug checks and compression checks but I borrowed a timing light and went on youtube to give myself a tutorial on how to time my motor. I have all MSD ignition so I didn't see any vacuum lines to unplug. I have been making small moves on the distributor when I had taken it out for my initial ride after new motor. So when I put the timing light on it for the first time, the timing was way after tdc (restarted right?) I'm guessing 30-40 degrees? So after doing research, I understood that the timing at idle should be around 18 or 19 degrees advanced at idle and should advance up to around 35 degrees advanced? Well, the best I could do was was about 10 to 12 degrees advanced at idle. If I advance it any more than that, I just can't get it started, it kicks back on the starter? From what I read, restarted timing can make your motor overheat so hopefully, this will resolve that issue. But, back to the detonation issue, like I mentioned, when I took the truck for the initial ride on Monday, I tried the timing in all different spots and never found anything that really helped the detonation. I can't try the truck tonite because of pouring rain, but will try it out tomorrow after work and see what I got.
Bullett is offline   Reply With Quote
Old 07-03-2014, 11:10 AM   #10
SparkyRnD
Registered User
 
SparkyRnD's Avatar
 
Join Date: Dec 2011
Location: acworth georgia
Posts: 890
Re: Is this the original 62' radiator?

get the timing set properly (10-12deg with a stock distributor, and around 25-30 deg total timing with advance). Then, make sure your carb is adjusted properly and jetted properly, as if you are lean, you will overheat. Once all your timing / carb settings are correct, then look to the water pump & radiator.
__________________
www.RnDFabrication.com
Custom Radiators, Valve Covers and Overflow Tanks
SparkyRnD is offline   Reply With Quote
Old 07-03-2014, 06:48 PM   #11
Bullett
Registered User
 
Join Date: Dec 2013
Location: Fairfield, Maine
Posts: 302
Re: Is this the original 62' radiator?

Well, I think my poor luck is continuing. Took the truck out this afternoon with the initial timing set at 12 degrees advanced, the detonation was better, not gone completely, but considerably better but the motor seemed very sluggish. I took it around the neighborhood a couple times and it didn't seem to come out of it and the temp guage eventually went back to 200 to 210 degrees so I pulled over and shut it down and waited for it to cool off. When I got home, after letting cool for an hour, I figured I would check all the plugs. They all looked exactly the same, I nice light brown and they were all gapped at .045. While the plugs were out, I figured I would screw my compression tester into each cyl. And get a cyl. Pressure reading. All read 145 to 155 EXCEPT #3 &#5 cyl. They read, 40 and 45 psi. Is this as bad as I think it is? Is there any other reason for this other than internal damage? My motor is gone ain't she? What other testing can I do that would tell me more?
Bullett is offline   Reply With Quote
Old 07-04-2014, 08:13 AM   #12
Bullett
Registered User
 
Join Date: Dec 2013
Location: Fairfield, Maine
Posts: 302
Re: Is this the original 62' radiator?

Continued this post under engine and drivetrain forum
Bullett is offline   Reply With Quote
Old 07-07-2014, 10:25 AM   #13
SparkyRnD
Registered User
 
SparkyRnD's Avatar
 
Join Date: Dec 2011
Location: acworth georgia
Posts: 890
Re: Is this the original 62' radiator?

could be busted rings, or a stuck valve. Maybe pull the offending valve cover and while running check operation.
__________________
www.RnDFabrication.com
Custom Radiators, Valve Covers and Overflow Tanks
SparkyRnD is offline   Reply With Quote
Reply

Bookmarks


Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -4. The time now is 01:01 PM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Copyright 1997-2022 67-72chevytrucks.com