Guest Ian turbo240 Posted May 18, 2003 Share Posted May 18, 2003 The $1000 question. How much horsepower can a stock 5.0 block/crank/rods/pistons handle provided the rpm is kept to 6500 or less? I'm looking to build a Cali-smog-legal 450+HP 5.0, and I need to know if it will survive. Plans are to use TFS/AFR/Edelbrock or equivilant heads, E303 cam, Trick Flow intake manifold, 70mm TB and EGR spacer, 36# injectors or larger if needed, Aeromotive fuel supply system, and Vortech supercharger with aftercooler. Appropriate headers/exhaust will also be included along with 80mm mass air sensor and whatever else I need to make my goal. If I can't use a stock block, then I'm considering the GT40 long block that Summit Racing sells. It's a production block, but at least it's brand new. If that won't work, then I'll have to spend the big bucks on a Dart block and forged crank, etc. That will add about $5g to the project. Thanks for the info. Ian Quote Link to comment Share on other sites More sharing options...
Guest Ian turbo240 Posted May 18, 2003 Share Posted May 18, 2003 By the way, I'm looking at using the '87-'92 5.0 Mustang block. I already have one ready to run. Would the main cap girdle do any good? Ian Quote Link to comment Share on other sites More sharing options...
Guest tom sixbey Posted June 6, 2003 Share Posted June 6, 2003 an 87-92 bottom end should have no trouble with 450HP so long as its in good shape. a main brace is definately a good idea, and I'm told it should last you to about 600 HP at the most on good components. does anyone else concur? Quote Link to comment Share on other sites More sharing options...
Mudge Posted June 29, 2003 Share Posted June 29, 2003 Probably doable, nothing wrong with bracing, its cheap insurance. Quote Link to comment Share on other sites More sharing options...
Guest bluex_v1 Posted June 30, 2003 Share Posted June 30, 2003 Over the numerous corral posts I have read, the rule of thumb seems to be that at 500 HP/500 ftLbs and stock components, it becomes a time-bomb. before you get that high, at least two things to look at are a hardened oil pump shaft and ARP rod fasteners Quote Link to comment Share on other sites More sharing options...
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