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73-87 Chevy _ GMC Trucks => Engine/Drivetrain => Topic started by: mustang22 on August 19, 2011, 06:15:22 pm
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Ok so i have an 86 gmc sierra 1500 3 spd. It has a 305 with hedman hedders 2.5 inch exhaust with flowmasters. The quadrajet is way out of tune its leaking a bit my exhaust smells like gas and it runs like crap.
I have a 650 dp with mech secondarys and was wonering if i could get away with using it on my 305 as i dont really have cash for another carb. Its for my 350 build over the winter but i just need the rest of the year out of t as my eyes are burning from the exhaust fumes
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its easy to rebuild the carb with the right info. there are videos on you tube and books to help you out.
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Yes i know that they arnt too hard to rebuild. I just have a rebuilt holley 650 dp sitting on the shelf and it takes 10 min to bolt it on.
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I would use it, if you need to you could run smaller jets. I run a holley 600 on my 4.3 in my s10 and it ran perfect.
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Well im gonna put it on tomorow and see how it runs. Just have to go buy an inline filter.
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imo 600 is too big for a 305 let alone 650
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Well just put it on and man does it make that motor wind up. Idles perfect and no bogs whatso ever. Just got to fix a small fuel leak lol. Should there be an o ring or do i use teflon tape where the fuel lines go into the carb?
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Gas will eat away the teflon tape. just tighten it up. Im glad it worked out for you.