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Old 12-29-2012, 09:37 PM
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Just a couple tips ,try to find a 400 block from 78 or older blazer WITHOUT center freezeplug much stronger,when i build 434 small blocks from a 400 for dirt racing late model midified i vat the block in radiator vat not a hot tank then fill the block thru water jackets with epoxy 2" deep to strenthen block and better ring seal i saw you lowered expacyions of rpm & horsepower to 400 hp which is very abtainable and still be streetable.as far as cost the 2000 you mentioned,our engines have rev limiter set at 8200 rpm but they do not run at that rpm ,usually 7600 on good trackno dry slick ,as far as cost to freshen up mid year usually 20 low 30s high -fresh build from scrach 55 or better we are running bow tie block since aftermarket dart and others are not allowed hope this dont discurage your build but this is all out racibg engine never ran below 5000 Would Not stay together on street Build a good streetable 406 and enjoy it, David .
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