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73-87 Chevy _ GMC Trucks => Engine/Drivetrain => Topic started by: magnum59 on April 22, 2007, 02:50:57 pm
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We will be removing a 4.3 from a 1985 chevy c10 custom pickup and would really like to up grade to a 305- my question is -is this possible with out changing everything in the drivetrain?The 4.3 is tost any way and we are looking at a crate 305 for about the same price as the 4.3.
thanks
magnum
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You'll have to change a few things...but nothing drivetrain related. I have a 305 for sale if you are anywhere local....
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Bigger radiator, clutch if its a standard, exhaust manifolds, etc.
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Distributor, intake, exhaust manifolds are the main things if you are doing a crate motor. I am sure you would have to move the mounts on the frame as well. You might have to have a fan shroud to go with the larger radiator that blazin mentioned.
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If you don't have A/C ,the small rad may be sufficient. Had a small rad with a 305 and it kept cool OK.That was in an 88.