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Author Topic: power plant swap  (Read 4954 times)

Offline murraygmc

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power plant swap
« on: February 21, 2009, 02:33:27 pm »
OK iv got a 86 4.3  and I'm thinking of putting a 79 350 in so what are the things different i need to know   will the fly wheel inter change  motor Mount  change  and any thing else i might Need to know  how will the exhaust  come out ? just like the 4.3   thanks   it is going in to a 85 4x4  is the 79 350 a 4 bolt main
« Last Edit: February 21, 2009, 02:36:32 pm by murraygmc »
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85 gmc high serria 4x4

Offline Captkaos

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Re: power plant swap
« Reply #1 on: February 22, 2009, 09:09:02 am »
Everything on the motor will swap out, but the I think the motor mounts are different
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Offline Blazin

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Re: power plant swap
« Reply #2 on: February 22, 2009, 09:11:52 am »
Fly wheel on the 4.3 is a one piece isn't it. 79 would be a two piece?
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Offline Captkaos

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Re: power plant swap
« Reply #3 on: February 22, 2009, 09:15:06 am »
Hmmm I think your right Blazin.
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Offline hilton850

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Re: power plant swap
« Reply #4 on: February 22, 2009, 04:19:49 pm »
is the 4.3 internal balance or external balance? 
Blazin, do you mean external balance when you say 2 piece flywheel?
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Offline VileZambonie

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Re: power plant swap
« Reply #5 on: February 22, 2009, 07:03:11 pm »
He means 2 piece rear main seal not 2 piece flywheel
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Offline murraygmc

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Re: power plant swap
« Reply #6 on: February 23, 2009, 11:07:51 am »
ok thanks  guyes hear is one thing tho the guy wants bothe my 4.3 mortors an iv got a 389 out of a 66 catlina with a 2 speed powerglide behind it  most of it is junk but the power glide works fine any one know what the power glide is worth????
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85 gmc high serria 4x4

Offline bigkountry

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Re: power plant swap
« Reply #7 on: February 25, 2009, 10:33:44 am »
I sold a glide last year that had been outside for two years. Turned it over, dumped the water out of it and sold it to a guy for $100. He watched me do all of this but wanted it anyways.

Look for a speed shop or dragstrip/swapmeet to unload the glide. They are only good for resto or racing really.
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Offline joesgarage71

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Re: power plant swap
« Reply #8 on: February 25, 2009, 10:58:48 am »
Theres guys out there looking for those 389's don't junk it! Find the Pontiac sites and sell it.
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78' K-20 355/SM465/twin stick 205 6" on 36's
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Offline joesgarage71

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Re: power plant swap
« Reply #9 on: March 05, 2009, 08:45:41 am »
Quote from: joesgarage71 on February 25, 2009, 10:58:48 am
Theres guys out there looking for those 389's don't junk it! Find the Pontiac sites and sell it.

 Hey a guy looking for a 389
http://www.hotrodders.com/ads/showproduct.php?product=5899&sort=1&cat=12&page=1

 You changed your first post, very tricky ::)
« Last Edit: March 05, 2009, 08:49:27 am by joesgarage71 »
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78' K-20 355/SM465/twin stick 205 6" on 36's
14 bolt FF/big bearing Dana 44 4.56 gears
92' GMC C-1500 454/4L80E/14 bolt
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