72 GMC 4x4 4speed Suburban big block - The 1947 - Present Chevrolet & GMC Truck Message Board Network

GKoepp · 01-30-2011, 03:54 PM

Having issues putting big block in and clearing linkage any suggestions on manifolds or headers that work :gmc2

olblue60@aol.com · 01-31-2011, 03:07 PM

Have you started by installing big block motor mounts? If so you should be able to change to any factory truck big block only parts.

John

GKoepp · 01-31-2011, 11:19 PM

Big block mounts were not offered in 4x4 67 to 72 models

olblue60@aol.com · 01-31-2011, 11:21 PM

Sorry for confusing your thread. I KNEW THAT! My brain must have skipped a beat.

GKoepp · 01-31-2011, 11:27 PM

Here's my problem would like to install headers for my 454 to clear frame but they wont clear my linkage for clutch have you or anyone on here had this issue and how do I over come it without going automatic there not much room with the 4x4 transfercase on a 4 speed

**Dieselwrencher** · 01-31-2011, 11:39 PM

I put a 396 in my 70 3/4 ton 4x4 and I ended up using headers for 73 up 2wd trucks with BBC's in them. You might have good luck with a chevelle header too.

scotto0609 · 02-01-2011, 04:29 PM

I believe hooker makes a app for it,its been years but had a 69 with a bb 4 spd set up.they were expensive but fit real nice.

bntmotorcycles · 02-05-2011, 09:55 PM

I did this same set up on a 71 4x4 3/4 PU. I used stock manifolds. The trick is the bracket for the Z bar. Chevy had a special bracket that mounted to the engine. Look it up in the old parts manuels. I found one off a big block 4spd 2wd and it worked fine. Caution though. This part is hard to find and unless you see one on a truck it won't make since to ya. It's weird but it works.

01-30-2011, 03:54 PM	#1
GKoepp Registered User Join Date: Nov 2010 Location: Canyon Lake,Texas Posts: 34	72 GMC 4x4 4speed Suburban big block Having issues putting big block in and clearing linkage any suggestions on manifolds or headers that work :gmc2

01-31-2011, 03:07 PM	#2
olblue60@aol.com member Join Date: Dec 2003 Location: Silver Spring Md.20901 Posts: 2,031	Re: 72 GMC 4x4 4speed Suburban big block Have you started by installing big block motor mounts? If so you should be able to change to any factory truck big block only parts. John __________________ 1967 C/K10 Chevy Panel 1968 C/K20 Chevy Pickup 1968 C/K10 Chevy Suburban 1941 Chevy Sedan Delivery 1960 Chevy Sedan Delivery 1972 Camaro SS 396 #s matching 1971 Harley FX Superglide

01-31-2011, 11:19 PM	#3
GKoepp Registered User Join Date: Nov 2010 Location: Canyon Lake,Texas Posts: 34	Re: 72 GMC 4x4 4speed Suburban big block Big block mounts were not offered in 4x4 67 to 72 models

01-31-2011, 11:21 PM	#4
olblue60@aol.com member Join Date: Dec 2003 Location: Silver Spring Md.20901 Posts: 2,031	Re: 72 GMC 4x4 4speed Suburban big block Sorry for confusing your thread. I KNEW THAT! My brain must have skipped a beat. __________________ 1967 C/K10 Chevy Panel 1968 C/K20 Chevy Pickup 1968 C/K10 Chevy Suburban 1941 Chevy Sedan Delivery 1960 Chevy Sedan Delivery 1972 Camaro SS 396 #s matching 1971 Harley FX Superglide

01-31-2011, 11:27 PM	#5
GKoepp Registered User Join Date: Nov 2010 Location: Canyon Lake,Texas Posts: 34	Re: 72 GMC 4x4 4speed Suburban big block Here's my problem would like to install headers for my 454 to clear frame but they wont clear my linkage for clutch have you or anyone on here had this issue and how do I over come it without going automatic there not much room with the 4x4 transfercase on a 4 speed

01-31-2011, 11:39 PM	#6
Dieselwrencher 6>8 Plugless........ Join Date: Sep 2007 Location: Prairie City, Ia Posts: 17,140	Re: 72 GMC 4x4 4speed Suburban big block I put a 396 in my 70 3/4 ton 4x4 and I ended up using headers for 73 up 2wd trucks with BBC's in them. You might have good luck with a chevelle header too. __________________ Ryan 1972 Chevy Longhorn K30 Cheyenne Super, 359 Inline 6 cylinder, Auto Trans, Tilt, Diesel Tach/Vach, Buckets, Rare Rear 4-link and air ride option Build Thread 1972 GMC Sierra Grande Longhorn 4x4 1972 Chevy Cheyenne Super K20 Long Step side tilt, tach, tow hooks, AC, 350 4 speed 1972 C10 Suburban Custom Deluxe 1969 Chevy milk truck 1971 Camaro RS 5.3 BTR STG3 Cam Super T10 1940 Ford 354 Hemi 46RH Ford 9" on air ride huge project *Tired of spark plugs? Check this out.*

02-01-2011, 04:29 PM	#7
scotto0609 Junior Member Join Date: Nov 2005 Location: new york Posts: 226	Re: 72 GMC 4x4 4speed Suburban big block I believe hooker makes a app for it,its been years but had a 69 with a bb 4 spd set up.they were expensive but fit real nice.

02-05-2011, 09:55 PM	#8
bntmotorcycles Registered User Join Date: Nov 2005 Location: midwest Posts: 211	Re: 72 GMC 4x4 4speed Suburban big block I did this same set up on a 71 4x4 3/4 PU. I used stock manifolds. The trick is the bracket for the Z bar. Chevy had a special bracket that mounted to the engine. Look it up in the old parts manuels. I found one off a big block 4spd 2wd and it worked fine. Caution though. This part is hard to find and unless you see one on a truck it won't make since to ya. It's weird but it works.



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