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 > 47 - Current classic GM Trucks > The 1973 - 1987 Chevrolet & GMC Squarebody Pickups Message Board

Web 67-72chevytrucks.com


Reply
 
Thread Tools Display Modes
Old 05-13-2019, 12:44 AM   #1
bigtexasrob
Registered User
 
bigtexasrob's Avatar
 
Join Date: Nov 2018
Location: Albuquerque, NM
Posts: 17
Question NV4500s and Laying Frame

My crossmember section began today, which means soon I will have my front suspension off and will have the easiest opportunity to address my transmission crossmember (as I understand it must slide out the end of the frame with the crossmember removed). 74 C30 350 with the four speed (3+L) manual trans, swapping to 6.5 NV4500. Will my NV4500 mount to the stock transmission crossmember? Will the truck lay frame on stock trans xm? Should I/Do I have to switch it out for my 93 NV4500 crossmember? Thanks in advance.
__________________
1974 C30 Dually Longbed
Diesel swap- Not finished
Airbags- Not finished
Rust- Extensive and ongoing
Offensive stickers- Many
bigtexasrob is offline   Reply With Quote
Old 05-13-2019, 08:33 AM   #2
Ziegelsteinfaust
Registered User
 
Join Date: Dec 2012
Location: Chino Hills
Posts: 1,525
Re: NV4500s and Laying Frame

I have never air bagged a car to lay frame, but I have gotten close. Since I pancaked, and I'd a frame for drop vs buying parts.

The trans cross member is above the frame so it is not a issue.

The issues you may encounter are the engine oil sump hanging below the frame, and the transmission sump. Or what ever it is called on a manual trans.

When laying frame sometimes people have to raise the engine, and trans 1-2 inches to make sure they are above the frame. Depending of course on how they got there.

What I liked to do was if I had the ability. Take the clip, and cab off. Set the engine, and tranny in place. After laying the frame on the floor. Set a piece of plywood under the pans. Then fabricate the mounts. This way everything is tucked up good.

You still may want to JB weld thick sheet metal on the pans just in case you hit a speed bump wrong. I do this a lot with the way Chevy hangs the pan. It can take a good whack with out leaking.
Ziegelsteinfaust is offline   Reply With Quote
Old 05-13-2019, 10:02 AM   #3
mongocanfly
Senior Member
 
Join Date: May 2015
Location: Alabama
Posts: 8,633
Re: NV4500s and Laying Frame

when i went from my sm465 to the nv4500 , i used the same crossmemeber...but had to move it back 2in if i remember right...the crossmember will come out of the frame rails by taking the brace pieces off and turning it at a angle..but its tight
__________________
Mongo...aka Greg

1981 C30 LQ9 NV4500..http://67-72chevytrucks.com/vboard/s...d.php?t=753598
Mongos AD- LS3 TR6060...http://67-72chevytrucks.com/vboard/s...34#post8522334
Columbus..the 1957 IH 4x4...http://67-72chevytrucks.com/vboard/s...63#post8082563
2013 GMC Z71..daily driver
mongocanfly is offline   Reply With Quote
Old 05-13-2019, 10:38 PM   #4
bigtexasrob
Registered User
 
bigtexasrob's Avatar
 
Join Date: Nov 2018
Location: Albuquerque, NM
Posts: 17
Re: NV4500s and Laying Frame

Quote:
Originally Posted by mongocanfly View Post
when i went from my sm465 to the nv4500 , i used the same crossmemeber...but had to move it back 2in if i remember right
Any chance I could get a picture of that, possibly with some indication of ride height? Mine is currently dismounted but laying in the frame and drags every time I move the truck (hangs about 8 lower than the frame)
__________________
1974 C30 Dually Longbed
Diesel swap- Not finished
Airbags- Not finished
Rust- Extensive and ongoing
Offensive stickers- Many
bigtexasrob is offline   Reply With Quote
Old 05-13-2019, 10:56 PM   #5
mongocanfly
Senior Member
 
Join Date: May 2015
Location: Alabama
Posts: 8,633
Re: NV4500s and Laying Frame

I'll get some tomorrow if I get home before dark..
__________________
Mongo...aka Greg

1981 C30 LQ9 NV4500..http://67-72chevytrucks.com/vboard/s...d.php?t=753598
Mongos AD- LS3 TR6060...http://67-72chevytrucks.com/vboard/s...34#post8522334
Columbus..the 1957 IH 4x4...http://67-72chevytrucks.com/vboard/s...63#post8082563
2013 GMC Z71..daily driver
mongocanfly is offline   Reply With Quote
Old 05-14-2019, 01:47 AM   #6
bigtexasrob
Registered User
 
bigtexasrob's Avatar
 
Join Date: Nov 2018
Location: Albuquerque, NM
Posts: 17
Re: NV4500s and Laying Frame

Id appreciate it. The 93 C2500 donor my 6.5 and NV4500 came out of was 11/9.5 static dropped and the thought of the trans lifting up over speed bumps still gives me the heeby-jeebies.
__________________
1974 C30 Dually Longbed
Diesel swap- Not finished
Airbags- Not finished
Rust- Extensive and ongoing
Offensive stickers- Many
bigtexasrob is offline   Reply With Quote
Old 05-14-2019, 08:00 PM   #7
mongocanfly
Senior Member
 
Join Date: May 2015
Location: Alabama
Posts: 8,633
Re: NV4500s and Laying Frame

Rob...heres some pics of the nv4500...
1st pic shows none of the trans hangs below the frame...the next 3 are the best I could get of the crossmember without putting the truck on the lift...
Attached Images
    
__________________
Mongo...aka Greg

1981 C30 LQ9 NV4500..http://67-72chevytrucks.com/vboard/s...d.php?t=753598
Mongos AD- LS3 TR6060...http://67-72chevytrucks.com/vboard/s...34#post8522334
Columbus..the 1957 IH 4x4...http://67-72chevytrucks.com/vboard/s...63#post8082563
2013 GMC Z71..daily driver
mongocanfly is offline   Reply With Quote
Old 05-18-2019, 09:41 PM   #8
bigtexasrob
Registered User
 
bigtexasrob's Avatar
 
Join Date: Nov 2018
Location: Albuquerque, NM
Posts: 17
Re: NV4500s and Laying Frame

Awesome, thanks. I dont think I have those risers that hold the crossmember up like that, Ill check around the shop and see if I ever did. I vaguely remember the one I have mounting to the bottom of the rail, but from what it sounds like Ill be able to use whichever crossmember and still have the ability to space it up into the truck.
__________________
1974 C30 Dually Longbed
Diesel swap- Not finished
Airbags- Not finished
Rust- Extensive and ongoing
Offensive stickers- Many
bigtexasrob is offline   Reply With Quote
Reply

Bookmarks

Tags
cross member, diesel 6.5, nv4500, swap, transmission

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 12:34 PM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2019, vBulletin Solutions Inc.
Copyright 1997-2013 67-72chevytrucks.com