350 crate engine overheating - Hot Rod Forum : Hotrodders Bulletin Board
Hotrodders.com -- Hot Rod Forum



Register FAQ Search Today's Posts Unanswered Posts Auto Escrow Insurance Auto Loans
Hot Rod Forum : Hotrodders Bulletin Board > Tech Help> Engine
User Name
Password
lost password?   |   register now

Reply
 
LinkBack Thread Tools
  #1 (permalink)  
Old 01-23-2009, 02:04 PM
Registered User
 
Last photo:
Join Date: Jan 2009
Location: las vegas
Posts: 6
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
350 crate engine overheating

i just recently installed a new sbc 350 engine in my 85 Monte Carlo SS, after installation the car started to overheat while driving >220 degress and getting to 260 degress. Everything is new on the engine except the water pump which came of a serpentine set up i got from the salvage yard.

    Advertisement
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2 (permalink)  
Old 01-23-2009, 04:07 PM
Registered User
 
Last photo:
Join Date: Mar 2007
Location: Corinth, MS
Posts: 591
Wiki Edits: 0

Thanks: 0
Thanked 25 Times in 24 Posts
I've got an '86 SS with a 350. Just thought I'd suggest you may have the wrong water pump. I believe the serpentine set-ups had a reverse flow pump compared to the old days(1960's). I'm not certain. You might check with NAPA or a dealer.
When I first installed my 350 it got hot. Found out the upper rad hose was missing what looks like a plastic elbow that keeps it from getting pinched by closing the hood. That seemed to fix it, but I bought a 3row radiator for peace of mind. Not saying you should. Just a thought. Good luck!
ssmonty
Reply With Quote Quick reply to this message
  #3 (permalink)  
Old 01-23-2009, 04:24 PM
Member
 
Last photo:
Join Date: Jul 2004
Location: wis.
Posts: 107
Wiki Edits: 0

Thanks: 0
Thanked 2 Times in 2 Posts
Quote:
Originally Posted by ssmonty
I've got an '86 SS with a 350. Just thought I'd suggest you may have the wrong water pump. I believe the serpentine set-ups had a reverse flow pump compared to the old days(1960's). I'm not certain. You might check with NAPA or a dealer.
When I first installed my 350 it got hot. Found out the upper rad hose was missing what looks like a plastic elbow that keeps it from getting pinched by closing the hood. That seemed to fix it, but I bought a 3row radiator for peace of mind. Not saying you should. Just a thought. Good luck!
ssmonty
That's where I would start also, along with verifying proper timing. On a side note, I had an 85 SS a while back, and have some parts yet, if any interest.
Reply With Quote Quick reply to this message
  #4 (permalink)  
Old 01-23-2009, 04:35 PM
Registered User
 
Last photo:
Join Date: Jan 2009
Location: las vegas
Posts: 6
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
I was thinking the water pump also...it's a reverse flow pump from a serpentine set up but may be old and worn out! I was thinking of purchasing a high flow reverse flow water pump i saw on ebay! Radiator is brand new but i think it's only a 2 row radiator not sure!
Reply With Quote Quick reply to this message
  #5 (permalink)  
Old 01-23-2009, 04:37 PM
Registered User
 
Last photo:
Join Date: Jan 2009
Location: las vegas
Posts: 6
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Quote:
Originally Posted by vetteman
That's where I would start also, along with verifying proper timing. On a side note, I had an 85 SS a while back, and have some parts yet, if any interest.
what parts do you have? My brother also has a 84 SS is always looking for parts!
Reply With Quote Quick reply to this message
  #6 (permalink)  
Old 01-24-2009, 12:43 AM
DoubleVision's Avatar
Not Considered a Senior Member
 
Last photo:
Join Date: Oct 2002
Location: Heart Of Dixie
Age: 40
Posts: 10,654
Wiki Edits: 0

Thanks: 15
Thanked 58 Times in 55 Posts
Are you using a serpentine or V belt set up? A V belt must use a standard flow water pump. (Clockwise) A serpentine can use both depending on the set up of direction. Some Serpentine systems use a smooth water pump pulley which is reverse flow (counter clockwise), a ribbed or grooved water pump pulley is standard flow(clockwise) So if your running a V belt with a reverse flow pump it`s going to run hot.
Reply With Quote Quick reply to this message
  #7 (permalink)  
Old 01-25-2009, 06:04 PM
Registered User
 
Last photo:
Join Date: Jan 2009
Location: las vegas
Posts: 6
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
350 crate engine overheating

I would like to say that i solved my overheating problem. I did the things that you guys n gals suggested:
1. changed thermostat, the new one i had was a bad one. took the bad one and put it in some boiling water and it never did open up.
2. after changing the thermostat, it started to heat up but not as fast. so my next step was the fan clutch.
3 changed fan clutches and it didn't help, so i sat and looked at the engine real good and "Ding" the bell rung in my head.
4 Since the engine is no longer on a v belt setup and now is a serpintine setup, the fan needs to rotate the same way as the water pump.
5 changed factory fan to a reverse fan and all my overheating issues was solved.
Thanks to all who put a post on my issue!!!!!!!
Reply With Quote Quick reply to this message
  #8 (permalink)  
Old 01-25-2009, 06:40 PM
Registered User
 
Join Date: Oct 2008
Location: Port Jefferson Station N.Y.
Posts: 34
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
sbc overheating

Quote:
Originally Posted by dirdeh20
i just recently installed a new sbc 350 engine in my 85 Monte Carlo SS, after installation the car started to overheat while driving >220 degress and getting to 260 degress. Everything is new on the engine except the water pump which came of a serpentine set up i got from the salvage yard.
I would say you also have the wrong water pump. what temperature thermostat did you put in?New? I would also check that the cooling system is not airbound.
Reply With Quote Quick reply to this message
  #9 (permalink)  
Old 01-25-2009, 07:31 PM
Registered User
 
Last photo:
Join Date: Jan 2009
Location: las vegas
Posts: 6
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
The water pump is a reverse flow water pump and the thermostat is 160 degree. The first thermostat was new but bad, so i changed it and it works correctly. I just drove it for about a hour and temp didn't get above 200 degrees. It just skipped my mind that the stock fan for a v belt drive will not work on a serpentine drive set up.
Reply With Quote Quick reply to this message
  #10 (permalink)  
Old 01-25-2009, 07:41 PM
Registered User
 
Last photo:
Join Date: Jan 2007
Location: canada
Posts: 564
Wiki Edits: 0

Thanks: 0
Thanked 3 Times in 3 Posts
reverse rotation, not reverse flow
Reply With Quote Quick reply to this message
  #11 (permalink)  
Old 01-26-2009, 11:23 AM
Registered User
 
Last photo:
Join Date: Jan 2009
Location: las vegas
Posts: 6
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
correct reverse rotation
Reply With Quote Quick reply to this message

Recent Engine posts with photos

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Hot Rod Forum : Hotrodders Bulletin Board forums, you must first register.
Please enter your desired user name (usually not your first and last name), your email address and other required details in the form below.
User Name:
If you do not want to register, fill this field only and the name will be used as user name for your post.
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.




Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools

Posting Rules
You may post new threads
You may 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
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
66 chevelle malibu and 350 engine questions person Engine 2 09-04-2007 12:19 AM
350 overheating person Engine 14 08-27-2007 05:51 AM
1969 350 375HP GM Goodwrench Replacement Engine Big Daddy Teez Engine 2 03-21-2006 07:36 AM
Cam Help black66 Engine 3 05-12-2003 06:15 PM
GM 350 Engine overheating wizofnet Engine 14 01-28-2003 01:09 PM


All times are GMT -6. The time now is 07:31 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0 PL2
Copyright Hotrodders.com 1999 - 2012. All Rights Reserved.