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03-22-2009, 10:58 AM
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#1 |
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Registered User
Join Date: Mar 2006
Location: Norman, Oklahoma
Posts: 553
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Motor Rebuild Question
I got a question for your motor junkies...
I just got a free motor from a '87 silverado. It's the TBI motor. It ran ok but has a small piece of the piston chipped off... Could i get away with just having the block honed and put 8 new pistons and rings in it and leave everything else the same? or would i need to do other stuff as well? He also kept the tbi head and intake but i still have the heads/intake/carb from the 85 motor i just pulled... could i use these on it and just add my mechanical fuel pump? I am wanting to get this motor running for my 73. I'm doing the 5.3 swap on my 85 and driving the 73 untill i get that one done. The 73 runs pretty good its only got 92k original miles but she is leaking from rear main and i wanna swap the motor out but keep the motor thats in it now as an extra and fix it up later...... im probably getting confusing now so ill stop, any help would be great!
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1973 Chevrolet C20 (Under Construction) |
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03-22-2009, 02:08 PM
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#2 |
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huh ???
Join Date: Nov 2002
Location: Fredericksburg,Va.
Posts: 3,368
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Re: Motor Rebuild Question
It would be a good idea to have the walls checked to see if the chip scratched the walls. You can use earlier heads on it. The blocks should be the same except it has a 1 piece rear main seal. You should also pull the cam to make sure it has a fuel pump lobe. Some of the later model cams did not have the lobe...
Chuck
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90 Blazer Silverado 350w/ 700R4 and 32" Kelly's "I am a bomb technician. If you see me running try to keep up!" |
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03-29-2009, 03:56 AM
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#3 |
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Registered User
Join Date: Apr 2007
Location: Visalia, CA.
Posts: 327
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Re: Motor Rebuild Question
dont mean to steal this thread, but im currently getting engine rebuilt. question is, that little pan under the intake, do you need to reinstall when putting it all back together? or can i eliminate this? looks like it holds all the carbon that builds up from falling in the valley in there, i dont know.
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68 c-10 1/2 ton swb fleetside, 79 GMC Sierra Grande 1/2 ton swb fleetside, 99 Dodge Durango 4x4(wifes ride  ),53 and 55 chevy trucks(dads trucks )54 caddy 62 series 4 door(younger sons ride, aka 54caddy )70 caddy 2 door, 89 chevy silverado stepside(older sons rides )
Last edited by mexgrhd68; 03-29-2009 at 03:57 AM. |
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03-29-2009, 04:57 PM
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#4 |
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Registered User
Join Date: Feb 2009
Location: Oklahoma
Posts: 7,461
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Re: Motor Rebuild Question
Chris man you are a lucky man. I need to go with you sometime so I can score some of this free stuff!
 Next time think of us less fortunate folks!
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03-29-2009, 07:35 PM
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#5 | |
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huh ???
Join Date: Nov 2002
Location: Fredericksburg,Va.
Posts: 3,368
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Re: Motor Rebuild Question
Quote:
Chuck
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90 Blazer Silverado 350w/ 700R4 and 32" Kelly's "I am a bomb technician. If you see me running try to keep up!" |
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03-30-2009, 02:12 PM
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#6 |
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Registered User
Join Date: Feb 2006
Location: northridge
Posts: 534
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Re: Motor Rebuild Question
if you're going to replace all of the pistons try and weight match them before you install them. it will get the motor closer to balance than just swapping pistons.
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""A bagged vehicle is only as good as it's wheel/tire combo!" -getlowness! my build thread http://67-72chevytrucks.com/vboard/s...=223747:metal: I'M SO SO CAL!
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03-30-2009, 08:51 PM
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#7 |
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Crazy
Join Date: Apr 2005
Location: Emmaus, Pa
Posts: 203
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Re: Motor Rebuild Question
The 1 piece rear main seal motor also has a smaller bolt diameter on the back side of the crank shaft, so you will have to replace your flexplate / flywheel depending on your trans.
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77 SB Stepside in a bunch of pieces scattered around the garage. |
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