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73-87 Chevy _ GMC Trucks => 73-87 Chevy & GMC Trucks => Topic started by: mrmotorhead05 on October 05, 2008, 01:35:27 am

Title: 250 straight 6
Post by: mrmotorhead05 on October 05, 2008, 01:35:27 am

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.

Title: Re: 250 straight 6
Post by: the_legend_1981 on October 05, 2008, 10:30:06 am

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

Title: Re: 250 straight 6
Post by: eventhorizon66 on October 05, 2008, 10:39:05 am

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

Clifford Performance truck headers (http://www.cliffordperformance.net/Merchant2/merchant.mvc?Screen=PROD&Store_Code=CP&Product_Code=52-0768&Category_Code=C250)  Not positive about the quality or fit, but to my knowledge they are the only option.

Title: Re: 250 straight 6
Post by: Lt.Del on October 05, 2008, 10:43:46 am

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.  ;)