#1  
Old 03-05-2021, 12:19 AM
drd drd is offline
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Join Date: Apr 2004
Posts: 5
Default 230 vs 250?

I have a 67 Firebird with the Sprint option that needs freshened up. I have a lead on a 68 250 with just the single barrel carb. I assume heads etc. are the same and I can swap my split manifold and intake over to the later engine?

thanks

  #2  
Old 03-05-2021, 06:40 AM
camerjeff's Avatar
camerjeff camerjeff is offline
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Join Date: Dec 2004
Location: Belleville , Mi
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Default

Yes the manifolds will swap, the only issues you may run into is accessory pulleys. They changed the belt spacing on the 68 & 69 250 engines. So if the 68 engine does not come with pulleys, or if your car has power steering and the 68 car does not and only has a single groove water pump pulley, you can't use your 67 2 groove water pump pulley as the belts will not be straight and you will throw the power steering belt at higher rpms. I have made most of those mistakes in the past when swapping parts between engines over the years.

Also you will notice a big loss in HP using the 1bb engine. Even if you swap the manifolds & cam.

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