Originally Posted by
SiZT
Ian's cracked the block at 450bhp IIRC, though you can buy special drag racing blocks at a very reasonable (

) $6,000.
spot on
although ians never cracked the block the whole fucking corner fell off

also duratec heads are far better than zetecs and ive never heard of them having problems it just the shit blocks , be warned stay well away.
the jamsport big bearing kit is for the bc box isnt it as people use the larger bearings from the ib5 box , they just machine the case to accept the ib5 bearing and all that does is help with flex , it doesnt make it ant stronger , and if quaife only rated there straight cut gearset at 265 bhp and the same torgue then i think that spells out how shit they are , just fit the far larger and bulky gearbox mtx or getrag
cheers paul