Hot Rod Forum : Hotrodders Bulletin Board - Reply to Topic
Hotrodders.com -- Hot Rod Forum



Register FAQ Search Today's Posts Unanswered Posts Auto Escrow Insurance Auto Loans Advertise
Hot Rod Forum : Hotrodders Bulletin Board > Tech Help> Hotrodding Basics> Shoe horning a SBC into a Mercedes 450 SL
User Name
Password
lost password?   |   register now

Thread: Shoe horning a SBC into a Mercedes 450 SL Reply to Thread
Title:
  
Message:
Trackback:
Send Trackbacks to (Separate multiple URLs with spaces) :

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:
Insurance
Please select your insurance company (Optional)

Log-in


Additional Options
Miscellaneous Options

Topic Review (Newest First)
11-16-2018 09:11 PM
cerial
Quote:
Originally Posted by BogiesAnnex1 View Post
Too bad, there are several versions of these things that are similar but not exactly identical in dimensions so he will eventually learn that there is no precise dimensional recepie that fits every build. Space is critical how it gets built dimensionally as mods proceed will drive the fine modifications needed for installation, you just can't get beyond generalizations because of that. The info he was given is more than adaquate to get started, probably the one thing missing is that there is great aid in using plastic mock ups of the Chevy engine and transmission since they are light and dimensionally correct that a person can maneuver them about to get the needed dimensions, but it's a substantial added cost to the build.

Bogie
That is why I make mine out of cardboard or plywood whatever is laying around the shop. If you have the engine on the floor you can simply trace the rear profile, make another for the front, then measure the blocks length and use the threaded rod/nuts to make your mock up block bolting it right to the bell housing.

The pictures on the Chevy link I linked earlier are quite accurate. Just scale it to real world scale using a free graphic program like gimp and print it off and tape the thing to your cardboard.

Sounds cheap cause it is. Cost of threaded rod/nuts and maybe another $10 in paper and cardboard.

Cheap, light, and when your done does not take up any shop space. It works good enough to say hold a oil pan or header up to the mock up block and get a very good idea the real clearance you have.
11-16-2018 10:42 AM
BogiesAnnex1
Quote:
Originally Posted by techinspector1 View Post
Apparently, Joe has zero interest in what any of us think, he was looking specifically for someone who had done a Gen I swap into a 450SL. I doubt that we'll ever hear from him again. Not to worry, there are thousands of other fellows who will appreciate our knowledge.

Too bad, there are several versions of these things that are similar but not exactly identical in dimensions so he will eventually learn that there is no precise dimensional recepie that fits every build. Space is critical how it gets built dimensionally as mods proceed will drive the fine modifications needed for installation, you just can't get beyond generalizations because of that. The info he was given is more than adaquate to get started, probably the one thing missing is that there is great aid in using plastic mock ups of the Chevy engine and transmission since they are light and dimensionally correct that a person can maneuver them about to get the needed dimensions, but it's a substantial added cost to the build.

Bogie
11-16-2018 06:42 AM
techinspector1 Apparently, Joe has zero interest in what any of us think, he was looking specifically for someone who had done a Gen I swap into a 450SL. I doubt that we'll ever hear from him again. Not to worry, there are thousands of other fellows who will appreciate our knowledge.
11-16-2018 12:01 AM
cerial
Quote:
Originally Posted by OneMoreTime View Post
Looks to me that a Small block ford may be a better choice in that car..

Sam
Or a modernish 4 cylinder running 10-16psi using mega squirt or other standalone.
11-15-2018 10:07 PM
OneMoreTime Looks to me that a Small block ford may be a better choice in that car..

Sam
11-15-2018 08:19 PM
joe_padavano
Quote:
Originally Posted by OneMoreTime View Post
How about a picture of the MB oil pan.. Would be helpful. I do think you can find an LS in Branson Mo.

Sam
Front (with the sump) is to the right.

11-15-2018 08:12 PM
OneMoreTime How about a picture of the MB oil pan.. Would be helpful. I do think you can find an LS in Branson Mo.

Sam
11-15-2018 05:18 PM
lmsport Electric conversion is what I would do to an old MB.
I did some SBC/TH350 swaps into Volvo diesel cars in the 1980's because the diesel engine was horrible and blew up.
11-15-2018 05:07 PM
joe_padavano The fact that you have a motor is not a reason to use it. The better answer is to get an LS with coil on plug. Aluminum versions won't weigh any more than the Merc motor. They are dirt cheap these days from wrecking yards. Oil pans for swaps are available everywhere.
11-15-2018 04:54 PM
techinspector1 Careful there Joe, you're coming across as a SNOT.
11-15-2018 04:38 PM
cerial Chevy dimensions

https://paceperformance.com/p-3990-e...imensions.html

As for front mounted distributors. Go coil on plug and be happy.
Here is a rough reference of a few engines showing overall dimension, weight, distributor and starter location.

Popular American V8 Engine Dimensions
11-15-2018 04:18 PM
Joe Geisler Searching for readers!!!
I have only older Chevy engines to do this with.
Search my Albums for SOME knowledge about me or my shop.
NOT a Bragger. Just need to get this thing done.Do ANY of you all out there know someone who did this conversion?
Without cutting up the crossmember under the engine? Does the Nova conversion pan for the early six cylinder to v8 conversion assembly work for the SBC in (THIS) conversion?
11-15-2018 03:25 PM
OneMoreTime First thing to do is remove all the front sheet metal and bumper assembly to allow EZ access to the engine compartment. Label and fasten the wiring harness out of the way as we will need to splice into that for the new engine. Just unplug the harness and use no wire cutters on that.


I would most likely use one of the 5.3 LS with the 4L60 transmission.

This thing makes this job a lot easier.
https://www.harborfreight.com/2-ton-...ler-60659.html

Next thing os that when you get your engine/trans assembly get one that runs well and LEAVE IT ALONE big mistake is made to do engine mods before the engine is mounted in place and running. Found this out the hard way.


Now that the engine compartment is cleaned out and you have the engine supported on your hoist set the engine/trans into place. I have my plasma cutter fired up so if I need to trim a bit I can do that. You can use blocking to hold the engine/trans in position so you ca measure up for the mounts. Make up your mounts and crossmember and get the engine trans bolted in. Then it is a matter of wiring the engine. connecting the fuel system and figuring out about the radiator. Should be good to go at that point.


Sam
11-15-2018 03:05 PM
BogiesAnnex1 This is a tight swap but is pretty common. You will find yourself going a lot of mock ups to work out the exact fits.

Basically an early model Chevy II pan and oil pick up will be needed. A short coolant pump and of course matching pulleys and accessory brackets. You'll find for handling you will want to get some weight off the front figure on an aluminum coolant pump, intake manifold, and 23 degree straight plug heads right at the start. Block hugger center outlet headers will just fit. You'll have to fabricate the engine mount space almost demands you use the GM 60 degree V6 mount to buy some space between intake and hood for a carb or injection. You well need a low riser intake like the Professional Products Cyclone.

The battery will go to the trunk you can use a marine terminal under the hood for electrical distribution. You will have to use a short mini oil filter if not a remote filter. Space is tight if not the final frontier. A TH350 or 700R4 should fit but it's tight. Coolant lines and exhaust will be a battle for space, forget the 4L60E there is no space for the wire bundle. By the best mini starter you can afford, you'll never see it again once the engine is installed without engine removal.

The rear mount distributor will forever make you wish you put a 351 Ford in it but then you'd have to install a remote mount electric coolant pump and develop a unique mount and drive system for the other accessories. You need to plan on a small cap distributor with an electronic conversion or something like the ProComp with the external mounted GM type module and vacuum advance.

To make this work, more than anything you have to manage your space precisely.

Bogie
11-15-2018 01:45 PM
cerial Mount your transmission to your driveshaft moving it into place with a transmission jack. Then measure forward from the belhousing face and that will show what will hit suspension wise.

Take some cardboard and cut out the profile of a 350 including carb. There are dimensions online I will link later. Make a front and back cutout then using threaded rod space them and bolt them to your belhousing.

I have the dimensions at the house so you can make your lightweight mock engine.

Once the engine is in you can hold up items like exhaust or accessories to see what will work.
This thread has more than 15 replies. Click here to review the whole thread.

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


All times are GMT -6. The time now is 10:03 AM.


Powered by vBulletin® Version 3.8.8
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0 PL2
vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.
Copyright Hotrodders.com 1999 - 2012. All Rights Reserved.