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Old 09-10-2015, 10:28 PM   #105
GASoline71
"I ain't nobody, dork."
 
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Join Date: Sep 2007
Location: Whidbey Island, Washington
Posts: 8,373
Re: Out of the Ditch = The Rebuild Begins ('72 GMC)

Pulled the doors off today and will tear them down tomorrow. One needs a new lower door skin and they could probably both use lower sheet metal on the inside.

Got my Holley back from my carb guy today. Fresh R&R and decided to try something a little different this time. I've always built my SBC's for top end performance... but in this truck, I need some grunt down a little lower. So I changed out the 750cfm main body for a 600cfm main body. We'll see how this experiment goes. I can switch back to the 750 main body if I really don't like it all that much.

I think the smaller CFM will make a lot snappier and I'll still get the revs out of it I want.

Gary
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My 1972 GMC 1500 Super Custom (Creeping Death) "long term" build thread.

The Rebuild of Creeping Death after the wreck

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Originally Posted by LONGHAIR View Post
I would never rebuild a 305.
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Originally Posted by prostreetC-10 View Post
I love using vacuum gauges as part of the carb tuning process. I hook the gauge to the inside of my garbage can and leave it there.
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Originally Posted by Marv D View Post
Remember Murphys 2nd law of mechanical relationships... "OPPOSING COMPONENTS ATTEMPTING TO OCCUPY THE SAME SPACE, AT THE SAME TIME, GENERALLY END UP OCCUPYING ADJOINING SPACE AT THE BOTTOM OF THE OIL PAN"
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