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
Hot Rod Forum : Hotrodders Bulletin Board > Tech Help> Transmission - Rearend> Swap 250 engine and saginaw 3sp to 350 engine with t-350 or another manual?
User Name
Password
lost password?   |   register now

Thread: Swap 250 engine and saginaw 3sp to 350 engine with t-350 or another manual? 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:
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.



Additional Options
Miscellaneous Options

Topic Review (Newest First)
02-04-2011 10:17 PM
southerntidefan Found a floor shift today...actually found a pot ofgold. This man has been stockpiling old gm truck axles and parts for years and due to economy is letting alot go cheap.hope to finish liift kit on blazer and get it ready for paint this week. Will post pics on the build of the 79. Blazer almost finished so ill post finished pics of it. Thanks for all the help
02-03-2011 03:40 PM
mud.man.rj
6 to 8 cyl

In my factory 1967 to 1976 General motors service manual it actually shows the frame is drilled ahead of 6 cyl mount to move crossmember ahead for 8 cyl install and preceeds to mention the trans crossmember is also drilled for same reason also mentions diff yoke length of 2.5 inchs. I have installed both ways as stated and with 6 cyl placement. Just saying what Gm states. Both work, but large distrib cap rubs cab.
02-03-2011 10:01 AM
southerntidefan Unsure what hopped up meant. I haven't went through it yet. I figured I couldn't get a block or a th350 core let alone all the other things for 450.00 bucks. And get this, I forgot my ratchet straps so he tied it down with no 1 copper wire. Lol
02-03-2011 09:51 AM
AutoGear Cant beat that. Define 'hopped up.' Maybe just leave it and build a stickshift? What heads cam and intake does it have?
02-03-2011 08:39 AM
southerntidefan And yes it has almost the power of a 350 and it actually pulls trailers better than my k5 due to the manual tranny. Fact is a rebuilt 6 costs about 400 more than a 350. So I bought a hopped up 350 that came with headers cherry bombs a radiator and a th 350 for 450 bucks. Couldn't pass on it.
02-03-2011 07:36 AM
AutoGear Im partial to custom Muncie 4spds. 2.98 1st gear and 3.23s in the rear
02-03-2011 07:28 AM
southerntidefan Yes I love the inline but it has 100000 on it now. It should last a while but when it goes I want to be prepared. I still drive it almost daily and mpg is great!
02-03-2011 06:54 AM
AutoGear Should someone point out that a 74 era 350 probably doesnt make any more power than the stovebolt 6? Personally I love seeing trucks with inline 6's at car shows...cuz there arent any. Heads and cam? Eh hell Modified vortec style heads and a 268H? Go with a small cap HEI or pertronix ignitor 2 or 3 conversion. Par for the course PM AirGap style intake as well... It will be lost in a sea of like trucks. Enjoy it in good health; take a good look at your front suspension when you yank the motor. I have no idea if there are any suspension differences between the stovebolt and the V8.

a 250hp inliner with a split manifold would be cool...put a T5 behind it
02-03-2011 04:53 AM
southerntidefan Thanks man any suggestion on heads and cam? Id like to go through engine before I put it in and this is my first build.
02-03-2011 04:19 AM
ericnova72 You can use a floor shifter just fine.
02-03-2011 03:56 AM
southerntidefan Thanks. If I used the th350. Would a new floor shifter be sufficient or would I have to get a new steering column?
02-03-2011 02:15 AM
ericnova72 Bellhousing to block interface is at the same point in the chassis and relative to the firewall, the V8 does not sit farther back than the staight six, so the same trans crossmenber is used with both transmissions, on either engine. From the back of the block to the transmission mount is the same distance on both the 3-speed manual and the TH-350 automatic.

The entire clutch/flywheel/bellhousing/transmission from the 250 will bolt right to the 350 V8, flywheel balance is the same, if you want to stay manual transmission.

You will need V8 block mounts for the truck to install the 350. Small block V8 bracketry for the power steering pump if you have power steering.
02-02-2011 09:43 PM
mud.man.rj
6 to 8

Done a few with t350, the 6 cyl sits back further than an 8cyl, so the 8 will bolt right in but sits back close to the firewall, especially the distrib. If you don't mind this you can usually use the same drive shaft for length. Sometime you have to swap yoke length only. If you want to keep the same 2 core rad just add an electric fan for better cooling.
02-02-2011 06:03 PM
southerntidefan
Swap 250 engine and saginaw 3sp to 350 engine with t-350 or another manual?

Big question. Or suggestion. I have a 79 c10 with a sixpack and three on tree. I recently acquired a 74 model .350 engine with a th 350 bolted to it. I just wanted some input on either going to the th 350 or finding another manual transmission pros and cons of both and your personal prefs. Thanks for all input.

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 02:36 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.