Differences between 1972 2wd 350 and 4x4 350 - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**HeloCrewChief** · 11-10-2019, 08:14 PM

I will be returning my 72' 3/4 4x4 Suburban engine compartment back to stock. I found a complete 1972 2wd truck 350 to swap in but, was curious what is different between 2wd and 4wd? I know the radiator hose pipe is and that is about it as far as my knowledge on the subject goes. Anything else different on the 4wd 350 engine compartments? Thanks in advance.

B. W. · 11-10-2019, 11:13 PM

If it has A/C the vacuum can mounted to the AC box has an offset bracket on the 4x4. I'm guessing it gives more clearance to the valve cover because the motor is set back?

**special-K** · 11-11-2019, 12:51 AM

Dipstick and tube is longer and bends forward on 4wd

**HeloCrewChief** · 11-12-2019, 01:29 AM

Good information guys. Non A/C ruck.

**Blazerowner** · 11-21-2019, 12:15 AM

Engine mounts?

Greasey Harley · 12-17-2019, 02:51 AM

not sure about '72 but, my '68C10 uses front motor mount location and my '68 K20 used rear motor mount location in order for the oil pan to clear the front axle.

**Eagle9502** · 01-03-2020, 11:28 PM

Quote:

Originally Posted by special-K

Dipstick and tube is longer and bends forward on 4wd

Would this have been ‘72 only?

**Eagle9502** · 01-03-2020, 11:29 PM

Fan shroud is different for 4x4.

jimbosprint · 01-06-2020, 09:31 PM

Throttle cable is shorter on 4x4 ('71-72).

rsavage · 01-07-2020, 08:12 AM

I don't know if/when it might have changed year wise, but the AC vacuum canister on the 4X4's was metal whereas the 2WD were plastic. Won't apply to your non AC truck obviously.

jimbosprint · 01-07-2020, 10:51 AM

Exhaust manifolds are also different. On 4x4 they go straight down, and on 2wd they angle back.

11-10-2019, 08:14 PM	#1
HeloCrewChief Senior Member Join Date: Aug 2010 Location: North Alabama Posts: 1,056	Differences between 1972 2wd 350 and 4x4 350 I will be returning my 72' 3/4 4x4 Suburban engine compartment back to stock. I found a complete 1972 2wd truck 350 to swap in but, was curious what is different between 2wd and 4wd? I know the radiator hose pipe is and that is about it as far as my knowledge on the subject goes. Anything else different on the 4wd 350 engine compartments? Thanks in advance. __________________ 1970 C10 to K20 conversion 1974 GMC Jimmy 1968 50th Anniversary Short Bed 1968 Chevelle 1964 Comet Caliente 1990 W250 Cummins

11-10-2019, 11:13 PM	#2
B. W. Registered User Join Date: Nov 2014 Location: Bigfork, Montana Posts: 1,137	Re: Differences between 1972 2wd 350 and 4x4 350 If it has A/C the vacuum can mounted to the AC box has an offset bracket on the 4x4. I'm guessing it gives more clearance to the valve cover because the motor is set back?

11-11-2019, 12:51 AM	#3
special-K Special Order Join Date: Nov 2004 Location: Mt Airy, MD Posts: 85,851	Re: Differences between 1972 2wd 350 and 4x4 350 Dipstick and tube is longer and bends forward on 4wd __________________ "BUILDING A BETTER WAY TO SERVE THE USA"......67/72......"The New Breed" GMC '67 C1500 Wideside Super Custom SWB: 327/M22/3.42 posi.........."The '67" (project) GMC '72 K2500 Wideside Sierra Custom Camper: 350/TH350/4.10 Power-Lok..."The '72" (rolling) Tim "Don't call me a redneck. I'm a rough cut country gentleman" R.I.P. ~ East Side Low Life ~ El Jay ~ 72BLUZ ~ Fasteddie69 ~ Ron586 ~ 67ChevyRedneck ~ Grumpy Old Man ~

11-12-2019, 01:29 AM	#4
HeloCrewChief Senior Member Join Date: Aug 2010 Location: North Alabama Posts: 1,056	Re: Differences between 1972 2wd 350 and 4x4 350 Good information guys. Non A/C ruck. __________________ 1970 C10 to K20 conversion 1974 GMC Jimmy 1968 50th Anniversary Short Bed 1968 Chevelle 1964 Comet Caliente 1990 W250 Cummins

11-21-2019, 12:15 AM	#5
Blazerowner Senior Member Join Date: Apr 2006 Location: Yuba City, Ca Posts: 1,955	Re: Differences between 1972 2wd 350 and 4x4 350 Engine mounts? __________________ Kirk 72 Blazer CST 4wd highlander

12-17-2019, 02:51 AM	#6
Greasey Harley Registered User Join Date: May 2013 Location: Post Falls, ID Posts: 900	Re: Differences between 1972 2wd 350 and 4x4 350 not sure about '72 but, my '68C10 uses front motor mount location and my '68 K20 used rear motor mount location in order for the oil pan to clear the front axle.

01-03-2020, 11:29 PM	#8
Eagle9502 Senior Member Join Date: Dec 2015 Location: Brooklet, Georgia Posts: 839	Re: Differences between 1972 2wd 350 and 4x4 350 Fan shroud is different for 4x4.

01-06-2020, 09:31 PM	#9
jimbosprint Registered User Join Date: Jul 2014 Location: Chico, California Posts: 951	Re: Differences between 1972 2wd 350 and 4x4 350 Throttle cable is shorter on 4x4 ('71-72). __________________ '72 Chevrolet K10 Cheyenne '72 Chevrolet C20 Deluxe (sold)

01-07-2020, 08:12 AM	#10
rsavage Registered User Join Date: Aug 2009 Location: Alden NY Posts: 2,705	Re: Differences between 1972 2wd 350 and 4x4 350 I don't know if/when it might have changed year wise, but the AC vacuum canister on the 4X4's was metal whereas the 2WD were plastic. Won't apply to your non AC truck obviously. __________________ 1961 C1 Corvette 1959 El Camino 350 TPI, 9" 4 w disc 69 Blazer K5 - sold July '20 2021 Durango RT 5.7

01-07-2020, 10:51 AM	#11
jimbosprint Registered User Join Date: Jul 2014 Location: Chico, California Posts: 951	Re: Differences between 1972 2wd 350 and 4x4 350 Exhaust manifolds are also different. On 4x4 they go straight down, and on 2wd they angle back. __________________ '72 Chevrolet K10 Cheyenne '72 Chevrolet C20 Deluxe (sold)



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