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#1 |
Registered User
Join Date: Jul 2015
Location: Dallas, TX
Posts: 167
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72 had engine swapped; how to return accessories to correct places?
My 72 GMC had its 350 engine replaced with a crate engine sometime in the 80s, it appears. The alternator is on the left (passenger) side, and I'm guessing other things are in the wrong place now too.
Since the AC is disconnected and missing parts, I want to get it restored & fixed. To do that without a lot of customizing, I need to return some things to their correct locations. Besides the alternator, what needs to be moved? How do you move these things exactly, and where do you get the brackets and other parts to do it? ![]() |
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#2 |
Senior Member
![]() Join Date: Mar 2003
Location: Colfax-California
Posts: 8,518
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Re: 72 had engine swapped; how to return accessories to correct places?
You pull everything off the front of the engine along with the water pump and replace with the era correct short water pump and all the matching goodies. Parts can be had in the for sale section or your local wrecking yard if they have a complete
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#3 | |
Registered User
Join Date: Jul 2015
Location: Dallas, TX
Posts: 167
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Re: 72 had engine swapped; how to return accessories to correct places?
Quote:
And....can any of you guys post pics of the front of your engine, so I can see where things should be and what is out of place on mine? |
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#4 |
Registered User
Join Date: May 2007
Location: Buxton Maine
Posts: 137
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Re: 72 had engine swapped; how to return accessories to correct places?
This is a 72 K2500 350 engine. You'll have to ignore the plow pump running off only the W/P pulley but it does show original alternator and P/S pump. Also w/o a/c the water pump pulley would be a single.
Ignore the small pulley on the front of the crank. It was for the plow pump but I can't use it in this case. With a/c the crank pulleys would have three sheaves the middle one for a/c and it would have the double w/p pulley same as this one. I'm looking for the crank pulley for a/c to properly drive the plow pump. They're not hard to find, came on cars too. I just haven't gotten around to it.
__________________
1954 GMC 101-24 Converting to 4WD Stock 54 GMC 150 frame Dana 44 Front Dana 60 Rear SBC350/SM465/NP205 |
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#5 |
Registered User
Join Date: Jan 2015
Location: Los Angeles California
Posts: 927
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Re: 72 had engine swapped; how to return accessories to correct places?
Just wondering in the upper alt bracket for 72. The original one on my K20 is EXTRA long compared to the one shown above. My brothers 69 and 71 have the short slot version shown above. Both of his are C20 auto/air/A/C, mine is a K20 auto/air/A/C
Is the 72 a one year only piece? Possibly 4x4 only like the steel radiator tube and oil dipstick? Mine is cracked/repaired on the lower portion of the slot and the few other "long" slot uppers Ive located are also cracked or repaired in the same area. Belt listings are 4 inches longer as well. |
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#6 | |
Registered User
Join Date: May 2007
Location: Buxton Maine
Posts: 137
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Re: 72 had engine swapped; how to return accessories to correct places?
Quote:
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1954 GMC 101-24 Converting to 4WD Stock 54 GMC 150 frame Dana 44 Front Dana 60 Rear SBC350/SM465/NP205 |
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#7 |
Registered User
Join Date: Jan 2015
Location: Los Angeles California
Posts: 927
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Re: 72 had engine swapped; how to return accessories to correct places?
I was reading that the long reach bracket was also used on mid 70s short water pump corvettes
Here is a pic of a short slot upper, looks like the arm is the same total length but the slot is smaller |
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#8 |
Registered User
Join Date: Jul 2014
Location: Chico, California
Posts: 941
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Re: 72 had engine swapped; how to return accessories to correct places?
Here's the 350 that's in my '72 C20 with factory accessory brackets. Not sure if GMC was exactly the same.
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#9 |
Registered User
Join Date: Jan 2015
Location: Los Angeles California
Posts: 927
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Re: 72 had engine swapped; how to return accessories to correct places?
Found the actual part numbers and it looks like there is a difference between the 69-71 and 72 only brackets. The corvette version is longer but looks totally different.
69-71 3951338 8 1/2in length 3 3/4in slot 7/8in offset 72 6262982 9 9/32in length 6 1/2in slot 7/8in offset |
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#10 | |
Registered User
Join Date: Jul 2015
Location: Dallas, TX
Posts: 167
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Re: 72 had engine swapped; how to return accessories to correct places?
Quote:
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#11 |
Registered User
Join Date: Apr 2011
Location: Klein Texas
Posts: 3,852
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Re: 72 had engine swapped; how to return accessories to correct places?
A/C compressor
__________________
My Classics: '72 K20 Suburban + '65 Dodge Town Wagon '72 Corvette Roadster +'67 Corvette Roadster '73 Z-28 Camaro '63 Ford SWB Uni Pickup '50 Ford Coupe |
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