First Generation Firebird-L Mailing List .........................................................................
For the 455 conversion, you simply bore a 400 block 30 over (actually to 4.151, which is 31 over), use a 4.21 stroke crank (std 455 stroke) w/3" mains for a 400 block and you have 455 ci. I used an Ohio crankshaft for my conversion. You can buy 60 over pistons for a 455. To fit these into a 400 block, you would have to bore to 4.210, which is 90 over relative to a stock 4.120 block. I don't know if the 455 and 400 blocks have different sleeve OD's. If they are the same, you could go up to "90" over but would have to convert to a 455 stroker crank or buy custom pistons. I would be curious to know if the sleeve OD's are the same. Sheen> .........................................................................> Some engine builders use 400 blocks to make 455, 461 and 468 cu. in. engines > which are more than .060 overbores. They usually test the blocks first and > then use a hard-block filler. The 400 blocks cast before '75 and 455 blocks > are the only ones thick enough to be used for these. I believe that Jim Hand's > book tells all of this. It's a very interesting and information packed book, > worth the money.> > Ronnie _________________________________________________________________ Discover the new Windows Vista http://search.msn.com/results.aspx?q=windows+vista&mkt=en-US&form=QBRE ------------------------------------------------------------------------ Submissions to Firebird-L: <[email protected]> Unsubscribe from Firebird-L: <[EMAIL PROTECTED]> Help: <http://FirstGenFirebird.org/firebird/Firebird-L.html> Classifieds: <http://FirstGenFirebird.org/ubb/> Owner Pictures: <http://FirstGenFirebird.org/show/> Donations: <http://FirstGenFirebird.org/store/cart.mv?999999> FGF Merchandise: <http://FirstGenFirebird.org/store>
