Marine 350 with LT-1 Heads - 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 12-20-2002, 10:38 AM
Registered User
 
Join Date: Dec 2002
Location: Canada
Posts: 4
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Post Marine 350 with LT-1 Heads

I have a Chevy 350 (91) in a boat. I was considering replacing the iron heads with the newer LT-1 aluminum heads. Anyone foresee any problems with this combo?. Cooling is a closed circuit type.

    Advertisement
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2 (permalink)  
Old 12-20-2002, 11:20 AM
DoubleVision's Avatar
Not Considered a Senior Member
 
Last photo:
Join Date: Oct 2002
Location: Heart Of Dixie
Age: 40
Posts: 10,657
Wiki Edits: 0

Thanks: 15
Thanked 59 Times in 56 Posts
Post

as far as I know, the LT1 heads are for reverse flow cooling blocks and will not interchange. the water ports in the heads are redirected and do not match the old style cooling passeges.
Reply With Quote Quick reply to this message
  #3 (permalink)  
Old 12-20-2002, 03:18 PM
BOBCRMAN@aol.com's Avatar
Member
 
Last photo:
Join Date: May 2002
Location: Holly, michigan
Posts: 8,130
Wiki Edits: 0

Thanks: 25
Thanked 267 Times in 250 Posts
Post

you will not like aluminum heads on a boat motor, boats have a hard time building heat with iron heads, with aluminum heads you would never get to a good operating temp, that is not good on the engine also you have to watch for corrosion problems
Reply With Quote Quick reply to this message
  #4 (permalink)  
Old 12-21-2002, 02:52 AM
Registered User
 
Join Date: Dec 2002
Location: Canada
Posts: 4
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Post

Thanks DV, I wasn't aware that the cooling holes were different.
Reply With Quote Quick reply to this message
  #5 (permalink)  
Old 12-21-2002, 03:10 PM
Member
 
Last photo:
Join Date: Dec 2002
Location: Grand Rapids, MI
Posts: 138
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Post

Why not just put a set of Vortec heads on it? They basically took all that was good from the cast iron LT-1 heads (the better flowing of the two) and put it to use on a set of standard coolant flow SBC heads. Plus they are pretty damn cheap brand new.
Reply With Quote Quick reply to this message
  #6 (permalink)  
Old 12-21-2002, 06:23 PM
Registered User
 
Join Date: Dec 2002
Location: Canada
Posts: 4
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Post

Hi KV, I thought about Vortec heads however, I was hoping for light weight aluminum heads. Ebay's got LT1 heads for around $200. If I had an LT1 block could I fit it with regular 350 crank and pistons?
Reply With Quote Quick reply to this message
  #7 (permalink)  
Old 12-21-2002, 07:20 PM
Member
 
Last photo:
Join Date: Dec 2002
Location: Grand Rapids, MI
Posts: 138
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Post

If you are dead set on aluminum heads, it would probably be cheaper in the long run to get an aftermarket set. Think about it. You are talking about completely building an engine around a set of heads. By the time it is all said and done with the LT1 you could have had a decent set of aftermarket aluminum heads. Take a look around out there. They aren't as expensive as you might think. Good Luck!
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



All times are GMT -6. The time now is 10:56 AM.


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.