This is topic STOCK BLOCK CAPABILITY in forum Drag Racing at Northern California Ford Owners .
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Posted by Wild Donkey (Member # 662) on
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WHAT IS THE MOST RWHP I CAN GET OUT OF A STOCK BLOCK WITH A SUPPORT GIRDLE BEFORE IT CRACKS IN HALF? THANX IN ADVANCE
Posted by 89hatchback_lx (Member # 587) on
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im not sure. i think like 400 - 550 hp. im not really sure. ask your friend in the 89 hatchback lx 
Posted by richard95stang (Member # 91) on
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Well if you think about it, those blocks can take a s**t at less horsepower than that. Just have to have your car tuned right and have no predetonation...
Posted by Wild Donkey (Member # 662) on
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Thats what I gonna try to do. Hope fully it'll work.
Posted by Team SOLO (Member # 722) on
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Mine had 'bout 475 or a hair less going to the rear wheel on a 175 dry shot. Completely bone stock bottom end, only change was the cam in the lower end. I had a buddy who used to own my coupe that went 9.30's in a stock block.
Posted by PunkINa5.SLOW (Member # 10) on
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Prolly get away with more if you half fill it and go with as close to a standard bore. Real good balance job and EXCELLENT block prep. And a VERY good balancer. Im sure that Normans block (Castros buddy that went 9.30) was prepped to the moon ( I believe reggie jackson prepped it) and Giasis handled the HP but for how long? You should have seen the damage when I pulled it apart after he rattle one piston. I would say as far as everyday driver type situation you are gonna wanna stay below 450 rear wheel horsepower.
Posted by Wild Donkey (Member # 662) on
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So a half way filled block would be able to holed more HP?
Posted by Yellow94GT (Member # 431) on
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Harold's stock block took around 600hp(flywheel) for 4 passes!...lol