![]() |
Register or Log In To remove these advertisements. |
|
|
![]() |
|
Thread Tools | Display Modes |
![]() |
#1 |
Registered User
Join Date: Mar 2011
Location: Owensville, MO
Posts: 10
|
72 3/4ton 4x4 BIG BLOCK Help. plz n thx
Hey fellas im currently working on my 72 Chevy 3/4ton 4x4. I pulled the small block out and working on trying to fit a big block in. i tried the motor mounts off the small block and the oil pan rubs the cross member. ive tried some other mounts as well. My question is how are ya'll getting these big blocks to fit in these trucks? I have searched this and having had much luck. Thanks a million guys i really appriciate it
![]()
__________________
1972 Chevy 3/4 ton. Under construction ![]() I'm a Mason! Lodge #624 |
![]() |
![]() |
![]() |
#2 |
I make Models
![]() Join Date: May 2005
Location: Bucks, PA
Posts: 626
|
Re: 72 3/4ton 4x4 BIG BLOCK Help. plz n thx
On a 4X4 the motor sits back farther on the frame....so I believe one of the things you have to do is use the 2wd motor mount location.....I have not done this but I am sure others who have will chime in for ya....good luck
|
![]() |
![]() |
![]() |
#3 |
Chance
![]() Join Date: Sep 2001
Location: Belcourt ,ND, USA
Posts: 750
|
Re: 72 3/4ton 4x4 BIG BLOCK Help. plz n thx
Get the cross member, mounts, and clams from a donor 73+ big block truck. I am doing that now. I put a 427 with a th400 in my 1972 3/4 ton 4x4. Ended up moving the engine ahead about 2 inches.
Posted via Mobile Device
__________________
1968 Chevrolet Stepside BB 396 w/TH400 1972 Chevrolet 3/4 Ton 4x4 BB 496 w/TH400 |
![]() |
![]() |
![]() |
#4 |
Registered User
Join Date: Mar 2011
Location: Owensville, MO
Posts: 10
|
Re: 72 3/4ton 4x4 BIG BLOCK Help. plz n thx
Ok thanks gentlemen ill give er a shot. i have a few 73+ sittin in the weeds ill give that a shot!
__________________
1972 Chevy 3/4 ton. Under construction ![]() I'm a Mason! Lodge #624 |
![]() |
![]() |
![]() |
#5 |
Registered User
Join Date: Dec 2009
Location: edmonton ab
Posts: 73
|
Re: 72 3/4ton 4x4 BIG BLOCK Help. plz n thx
i would try a different oil pan first. i have installed big blocks before with no mount changes. Some oil pans have a long sump and will not clear
__________________
formerly cooter |
![]() |
![]() |
![]() |
#6 |
Registered User
Join Date: Mar 2011
Location: Owensville, MO
Posts: 10
|
Re: 72 3/4ton 4x4 BIG BLOCK Help. plz n thx
Shocker i was kicking that idea around as well but i dont have an oil pan laying around that i havent tried and nothing really works so far. Any suggestion on oil pan to try and find?
__________________
1972 Chevy 3/4 ton. Under construction ![]() I'm a Mason! Lodge #624 |
![]() |
![]() |
![]() |
#7 |
Registered User
![]() Join Date: Apr 2010
Location: Hagerstown, MD
Posts: 246
|
Re: 72 3/4ton 4x4 BIG BLOCK Help. plz n thx
My 70 CST S/S was originally equipped with a SBC 307 motor. I still have the original CM too with a crate LS6 BBC in it (stock oil pan). What I can tell you as well is that there should be two sets of motor mount holes on the frame...one for BB and another for SB. The motor mounts for a BB will have to be used to raise the motor sufficiently to clear the CM. I think they are the forward mounting holes. some BBC oil pans had the sumps in different locations so you may also want to check that too. That is what I have from my experience.
__________________
John Paap Ole Greenie Hagerstown, MD My Mistress 70 CST Short/Step LS 5.3/4L65E New motor install Thread:http://67-72chevytrucks.com/vboard/s...d.php?t=667773 Last edited by Ole Greenie; 04-11-2012 at 10:53 AM. Reason: incomplete |
![]() |
![]() |
![]() |
Bookmarks |
Thread Tools | |
Display Modes | |
|
|