250 straight 6

[mrmotorhead05]

how many of you guys are running the 250 straight 6 (1 bbl)?
i have a 75 C-10 (base options) that has that motor with the 1 piece cast intake/head.
does anybody have a spare exhaust manifold for this particular setup??? after 33 years i go to change the original freeze plugs.....which are behind the exhaust manifold and 7 of the 15 bolts broke off in the manifold.

[the_legend_1981]

I have one on the engine i took out of my truck

[eventhorizon66]

Maybe this would be a good time to upgrade to a header, if there's room in the budget.

Clifford Performance truck headers  Not positive about the quality or fit, but to my knowledge they are the only option.

[Lt.Del]

next time try to run your engine to get it warm, then try to take the bolts off.  Yes they will be hot, but, turning each just a turn or so when hot will help break them loose.  Then when it cools, remove them the rest of the way--or you can wear welder's gloves like I do when removing hot manifold bolts.