The 1947 - Present Chevrolet & GMC Truck Message Board Network







Register or Log In To remove these advertisements.

Go Back   The 1947 - Present Chevrolet & GMC Truck Message Board Network > General Truck Forums > Engine & Drivetrain

Web 67-72chevytrucks.com


Reply
 
Thread Tools Display Modes
Old 08-13-2012, 01:39 PM   #1
PortalAxls
Registered User
 
PortalAxls's Avatar
 
Join Date: Dec 2011
Location: Coral Bay, St John USVI
Posts: 58
305E transmission swap

Has anyone ever swapped an OD transmission behind their big block V6? Been looking at the ZF that came behind the 8.1 and Duramax, or the NV4500. Any info would be greatly appreciated.
Posted via Mobile Device

Last edited by PortalAxls; 08-13-2012 at 04:21 PM.
PortalAxls is offline   Reply With Quote
Old 08-13-2012, 07:17 PM   #2
clinebarger
Senior Member
 
Join Date: May 2009
Location: Fort Worth, TX
Posts: 6,370
Re: 305E transmission swap

Quote:
Originally Posted by PortalAxls View Post
Has anyone ever swapped an OD transmission behind their big block V6? Been looking at the ZF that came behind the 8.1 and Duramax, or the NV4500. Any info would be greatly appreciated.
Posted via Mobile Device
The ZF S6-650 6-speed is HUGE & expensive...Specs...http://www.zf.com/na/content/media/u...Spec_Sheet.pdf
The ZF S6-650 & Allison 1000 are so big GM had to raise the body 2" for them to fit.

The NV4500 is the most feasible option.
I know nothing about the 305E V6 other than the bellhousing bolt pattern is not the same as a traditional Chevy V8...But for now im going to assume it shares the same bellhousing "spacing" as a traditional Chevy V8.

Find a light duty Dodge V8 NV4500, DO NOT buy a V10/Diesel HD version .

This adapter bolts between the bellhousing & transmission. http://www.advanceadapters.com/products/pn-712550/

Your existing bellhousing center idex hole will need to be bored to 5.125”.

You will need a 1 1/8" X 10 spline clutch disc in whatever diameter your existing clutch disc is. Chevy clutches are already the right size.

Shorten the drive shaft, Run a Dodge output/slip yoke.

If you go through with this I will help with speedo gears.
clinebarger is offline   Reply With Quote
Reply

Bookmarks

Tags
305e, 305e transmission, transmission swap

Thread Tools
Display Modes

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

Forum Jump


All times are GMT -4. The time now is 02:18 AM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Copyright 1997-2022 67-72chevytrucks.com