1940 chevy truck sbc engine placement - 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> General Rodding Tech
User Name
Password
lost password?   |   register now

Reply
 
LinkBack Thread Tools
  #1 (permalink)  
Old 03-21-2012, 07:10 PM
Registered User
 
Last photo:
Join Date: Mar 2007
Location: alberta
Posts: 32
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
1940 chevy truck sbc engine placement

Hi guys and gals.
I have the frame almost boxed in. what i need to figure out is how far back the engine should be from the rad?
i want to put in the motor mounts and trans mounts.
I'm not to sure where it should go.
Any suggestions?
Thanks in advance.
Barry

    Advertisement
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2 (permalink)  
Old 03-21-2012, 09:10 PM
Registered User
 
Last photo:
Join Date: Apr 2011
Location: Southern Arizona
Posts: 205
Wiki Edits: 0

Thanks: 0
Thanked 7 Times in 7 Posts
The #1 spark plug should be at or behind the centerline of the front wheels(axle) Farther back makes for better balance but not so much that I would butcher a good firewall for a couple of inches, especially for a street rod. You also want to make sure the distributor and bellhousing clear the firewall and fit the tunnel. Put the engine on a hoist and roll the chassis/cab under it and set it as far back as practical then see where you are with the front, then let us know.
Reply With Quote Quick reply to this message
  #3 (permalink)  
Old 03-23-2012, 08:33 PM
Registered User
 
Join Date: Mar 2012
Posts: 3
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
if it will help I can take measurements on mine and post photos....

My number one sets just behind the centerline, the mustangII crossmember is under the front most of the oil pan and my rack n pinion is under the harmonic balancer....
Reply With Quote Quick reply to this message
  #4 (permalink)  
Old 03-23-2012, 08:43 PM
matts37chev's Avatar
I don't understand?
 

Last journal entry: Try again
Last photo:
Join Date: Jan 2009
Location: Shelton,Wa.
Posts: 2,485
Wiki Edits: 0

Thanks: 26
Thanked 20 Times in 19 Posts
the best way is to swing it in there (as far back as you can) and thats where it goes
no guessing
Reply With Quote Quick reply to this message
  #5 (permalink)  
Old 03-24-2012, 12:01 PM
Registered User
 
Last photo:
Join Date: Mar 2007
Location: alberta
Posts: 32
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
I had one fella with an identical truck with a 327 and he measured 10" from rad to front of heads.
I was thinking 6" from rad to front of short water pump.
It should be in the ball park.
I dont have the cab handy to put on the chassis, thats why i asked for a measurement.
Thanks for the help guys.
Barry
Reply With Quote Quick reply to this message
  #6 (permalink)  
Old 03-25-2012, 09:59 AM
MARTINSR's Avatar
Brian Martin,Freelance adviser
 
Last photo:
Join Date: Jun 2004
Location: San francisco bay area
Age: 56
Posts: 13,435
Wiki Edits: 0

Thanks: 1,570
Thanked 1,325 Times in 1,149 Posts
There is no way, no how, absolutely FORGET even thinking about simply measuring off some other frame or something like that on putting that motor in there! You put the cab on, you put the motor in there and and you set it up with the rad support on so you KNOW what you are doing.

You are trying to skip a step by "cheating". Setting the engine in there and seeing exactly what you are working with is the ONLY way I would ever do this.

Please don't take this as a dig to Speed Bump who has spent the time providing you with measurements. Which of course he also suggest you put the motor in too.

I wouldn't leave it to someone else's interpretation of what to measure it off of, of knowing how to use a measuring tape, of understanding what they have said clearly, there is NO WAY, NO HOW I would weld in motor mounts or anything else like that without putting the motor in the truck!

If you have built an exact truck before and know a particular measurement that works, fine. But to take a number from someone off the net and weld in motor mounts, there is NO WAY.

You want to KNOW, you want to understand WHY you are putting that motor just where you put it. In your particular swap it had an inline six in there, so yes there is plenty of room for error. But you are still talking about close tolerances with a little bit different location. Put the motor in there and build it around what you see.

Brian
Reply With Quote Quick reply to this message
  #7 (permalink)  
Old 03-25-2012, 10:01 AM
MARTINSR's Avatar
Brian Martin,Freelance adviser
 
Last photo:
Join Date: Jun 2004
Location: San francisco bay area
Age: 56
Posts: 13,435
Wiki Edits: 0

Thanks: 1,570
Thanked 1,325 Times in 1,149 Posts
Quote:
Originally Posted by matts37chev
the best way is to swing it in there (as far back as you can) and thats where it goes
no guessing
EXACTLY! Put the darn thing in there, don't try to cheat!

Brian
Reply With Quote Quick reply to this message

Recent General Rodding Tech 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:
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
custom WIDEned 1940 chevy truck caseyscustoms Hotrodders' Lounge 11 03-04-2012 10:33 PM
V12 Jaguar in a 1940 Chevy Pickup Truck moff1959 Introduce Yourself 23 12-24-2011 02:26 PM
1940 Chevy truck ifs probird Suspension - Brakes - Steering 4 12-08-2011 08:18 PM
1940 chevy truck frame probird Suspension - Brakes - Steering 8 11-12-2011 10:36 PM
48 Chevy 1/2 ton V8 engine placement tomy2tone01 Engine 3 12-09-2002 02:59 PM


All times are GMT -6. The time now is 04:48 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.