i have a world mega block with casting #T5153843.

can anybody tell me if its a ok casting.it came with 4.50 finish bore,has big 12an fitting in front,crossbolted on 4 mains think its last generation,and casted by world.

uhhh... Naawww, those were the bad ones! You better not trust it, Probobly should give it to me to properly dispose of!

5153843 is the casting number. The actual part number is P5153862 (if it's a HEMI). That's a fine block. It's a gray iron block with 4.5" finished hone and it should have bushed lifter bores.

That's a great block for a 572 street engine.

Although these blocks were supposedly ready for assembly, they almost never turned out that way. So plan on doing a line hone and decking. Also check that the number 5 main cap studs are marked with ARP. Early versions of these blocks used cheap Chinese studs for #5 main that just didn't hold up.

part # is 5153860,its a wedge,lifter bores arent bushed,didnt know about # 5 studs,thanks for info

give me your address,i,will send it right away,ha!72 demon chassie car,8.80 154mph 557 ci,bme rod broke,windowed mega block with 30 passes on it,going to buy this other block now.2200.00 new in box.

i have one windowed with 30 passes,4.440 bore,brand new,russ at indy said its fixable,for a fee.

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part # is 5153860,its a wedge,lifter bores arent bushed,didnt know about # 5 studs,thanks for info

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Check ALL the studs.