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#1
06-02-2007, 08:21 PM
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Pontiac V-8 BLOCK code Y4
I am trying to figure which engine this car, and if it actaully has the rated HP that is posted. Here is a link to the car with the engine in it, http://cgi.ebay.com/ebaymotors/ws/eB...9245585&rd=1,1
Here is a link to the block that I found on ebay, this is not rebuilt like the one in my car: http://cgi.ebay.com/ebaymotors/1977-...0Q3aRECOQ3aBIN Also since I am most likely going to build this into a track car, I am trying to figure out if this block has the thin webs like all the other Pontiac Blocks from the late 70's. Thanks. |
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#2
06-02-2007, 10:37 PM
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I'm going a 73 Y4 now and its the thick webs,74-Y4 is a 455,77-Y4 is a 400.Need to check the date code.
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1977 Trans Am,400 4 speed,numbers matching car  1979 Bonneville ,1 owner car...  1997 Trans Am convertible,LT1/auto. |
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#3
06-02-2007, 10:51 PM
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dated 77, block # 500577,y4 samped on front. I know the 577 usually has thin webs, but the guy told me this isn't a firebird block, anyone else got info on the y4 stamp with the 500577.
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