6066 (1960-1966) GMC Truck Club Bitcoin now accepted here! 
Pay Dues
Pay Dues or become a Site Supporter
 



Go Back   6066 (1960-1966) GMC Truck Club > 6066 GMC Truck Club Forum > I-6 Engines


I-6 Engines For GMCs that came with the Inline 6 Engines

Reply
 
Thread Tools
  #1  
Old January 24th, 2018, 06:16 PM
ItalOso ItalOso is offline
-= Site Supporter =-
 
Join Date: Jun 2017
Location: Santa Rosa, CA
Truck: 1964 SWB WS
Posts: 21
Rep Power: 17
ItalOso is on a distinguished road
Default 250 I-6 question

Hello Members,
I have a '64 GMC, SWB with SM-420, Fleetside 1000, rebuilt the original 230 to a 250 over 10 years back. Thinking of different things to do, but not sure where to turn. Had received a link from another member to adjust/rework the pedals so they aren't so high up off of the floor.
I'd like to consider putting a newer manual OD transmission into the truck but not sure what will work. Realize the driveline will most likely need to be rebuilt, do these tranny's just bolt right up to the truck? is there a housing that would need to be added, thus placing the stick back farther than its stock location now?
I have changed the rear end gears, which my grandfather had set up for hauling, like 3:93 but I reduced to 3:05. I've noticed that I have to really rev up the motor to get the truck moving as compared to before, it took about a 1/4 of the power with the old gears.
If I choose an automatic, like a 700R-4 is an option, would this be the best choice? I'm concerned if the 250 will have enough power to provide to these new transmissions. I will change the steering column and reduce the steering wheel diameter too depending on which choice I may make.
I also do not have power steering on the truck now, but increased the wheel size from 15 to 16" because of the addition of power disc brakes a couple of years ago. Seems to turn easier with the bigger tires but with the reduction of the steering wheel and alterations, should I consider just installing it at the same time?
Appreciate the feedback and links/pictures of the changes that have been made. Thanks!
ItalOso
Reply With Quote
Reply

Bookmarks

Thread Tools

Posting Rules
You may not post new threads
You may not 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


Similar Threads
Thread Thread Starter Forum Replies Last Post
Looking for Rochester B Carb or carb parts for 250 inline 6 250 rusty66 1960-1966 GMC Marketplace 9 October 16th, 2016 09:12 PM
Wanted: inline 6, 250 or 292 Archiver Previous Forum Posts 0 October 21st, 2012 02:12 AM
Re: 194-230-250-292 thing Archiver Previous Forum Posts 4 June 1st, 2012 02:17 AM
Re: 250 Fan Spacer...? Archiver Previous Forum Posts 0 March 26th, 2007 04:35 AM
[6066 GMC] 250 Fan Spacer...? Archiver Previous Forum Posts 0 March 24th, 2007 02:34 AM


All times are GMT +1. The time now is 11:50 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2013, Jelsoft Enterprises Ltd 98|0
Feedback Buttons provided by Advanced Post Thanks / Like (Lite) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.