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73-87 Chevy _ GMC Trucks => 73-87 Chevy & GMC Trucks => Topic started by: ewingwr on October 06, 2014, 06:27:24 pm

Title: 4.1 250 intake/carb help 1983 gmc truck
Post by: ewingwr on October 06, 2014, 06:27:24 pm
A couple of questions.  I have the 4.1 , and I want to remove the smog pump, but the adjustment for the belt is on the smog pump.  I have done some searching, but have not found a delete pulley, so I'm wondering what I should do?
Secondly, the stock carb is fubar at this point.  I was looking at a 2 barrel holley.  Can someone point me in the direction of an intake to go with this?  I'm assuming the stock intake isn't going to provide enough airflow for a 2 barrel.   Any help would be greatly appreciated.
Title: Re: 4.1 250 intake/carb help 1983 gmc truck
Post by: Captkaos on October 07, 2014, 01:13:48 pm
Rebuild the stock carb, they are pretty simple.  Adding a 2 bbl is going to add parts and complexity for no reason.
why are you wanting to remove the smog pump?  Can you not just remove it and the belt work.  I don't remember how the belts were routed...
Title: Re: 4.1 250 intake/carb help 1983 gmc truck
Post by: ewingwr on October 07, 2014, 06:35:40 pm
Do you know what kind of carb came stock on those trucks so I know which rebuild kit to buy?
The power steering is on the same belt with the smog pump, and the smog pump has a slide on it for the belt adjustment
Title: Re: 4.1 250 intake/carb help 1983 gmc truck
Post by: Captkaos on October 09, 2014, 07:39:37 pm
Just rebuild what you have. 
Does the PS not have any adjustment?
Title: Re: 4.1 250 intake/carb help 1983 gmc truck
Post by: jntrndrm on December 18, 2014, 08:11:17 am
I just resolved that problem, you need to find the brackets from an older 250, probably 81-2, these will mount the power steering pump above the alternator , and have the adjustment you want. I'm having alittle trouble with vacuum routing due to fact I didn't take enough pic's before disassembling them.  good luck, Don
Title: Re: 4.1 250 intake/carb help 1983 gmc truck
Post by: Tacmo on February 03, 2016, 03:01:57 pm
I just resolved that problem, you need to find the brackets from an older 250, probably 81-2, these will mount the power steering pump above the alternator , and have the adjustment you want. I'm having alittle trouble with vacuum routing due to fact I didn't take enough pic's before disassembling them.  good luck, Don
Where did you end up finding the older style brackets?

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Title: Re: 4.1 250 intake/carb help 1983 gmc truck
Post by: jntrndrm on February 12, 2016, 08:49:24 am
I found the brackets in a bone yard,  still would like some good pic's of the vacuum lines, the carb has alot.