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#736635 04/06/2011 3:02 AM
Joined: Apr 2005
Posts: 32
B
'Bolter
'Bolter
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Joined: Apr 2005
Posts: 32
I have a 230 or 250 engine from a 1965 chev full size car with a 3 speed. Engine block serial number is FO216FA next to dist. and casting number is 3877178. Is this a 230 or a 250? Thanks


Bill garvey
Joined: May 2006
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L
'Bolter
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Joined: May 2006
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According the the GM Heritage site, it is a 230.


Bill Burmeister
Joined: Feb 2000
Posts: 5,195
J
'Bolter
'Bolter
J Offline
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Posts: 5,195
The blocks are the same, they changed the crank to a longer stroke for the 250. If you can get a look in the spark plug hole at the piston tops, you can tell the difference. 230 will have four valve reliefs like 90% of all engines have, the 250 will have one big dish right in the center that takes up the whole piston top.

230 http://www.summitracing.com/parts/SLP-235NP30/?rtype=10

250 http://www.summitracing.com/parts/SLP-403P30/

The rest of the engine is all the same except for the camshaft spec's, the 250 has a slightly bigger cam.


http://www.hotsixes.com/index.php?option=com_content&view=article&id=2&Itemid=3

Joe

Last edited by Joe H; 04/06/2011 3:10 PM.
Joe H #736773 04/06/2011 4:04 PM
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Shop Shark
Shop Shark
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250 engines were not available until the 1967 model year so your 65' would not have it as an original engine.


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Dave
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If you can't make seventy by an easy road, don't go. ~~ Mark Twain
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F
'Bolter
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1966
My 66 C10 had a 250.
Oh, I don't know about cars.


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