Warlockk

So will a regular iron block. There are aluminium blocks running higher power than that. The design is much more important than the material. If you want something strong get a 4 bolt main. Otherwise a 2 bolt will do just fine. The nickel content won't do much. Unless you plan to cut it really thin.

dr_bowtie

Mercury Marine blocks and FRRP blocks are high nickle....

2 bolt mains are fine and only become an issue above 6k rpm... if you plan to rev higher have the caps "Pinned". I do this on my 2-bolt blocks.

My machine shop puts an Insert in the bolt holes of the cap and block...that locates the cap and the bolt goes thru it... aint busted one yet...

Just dont use cheap or chinese cranks... they break before the caps will.

Ford 4x4

yeah I planned on stroking my 351w so thats why I went with the high nickle block.

Warlockk

My point is I just don't think its worth spending any extra money on a high nickel block. Its not any stronger where you need the strength. It can resist cracking which is a heat problem not a torque problem. The standard iron block is just fine but if you feel the need to spend more money its better spent on a 4 bolt. A 4 bolt will be much stronger than a 2 bolt high nickel. The only time a high nickel would help is if you over cut the boars a lot and make the cylinder walls too thin. That is generally for racing though not for high torque applications. When stroking you are only cutting reliefs in the bottom of the cylinders for crank clearance. I say skip the extra dough for the high nickel and spend it somewhere more useful.

Ford 4x4

well i bought the complete motor that ran for 100 bucks. So I dont think I wasted any extra money there. And I am thinking about having it turned into a 4 bolt main, just to be safe and make sure the motor does not come apart 5 miles down the road.

Warlockk

Well you can't beat that price on any good block. I don't know that the op will be that lucky though.

Ford 4x4

Probably not... Any idea how much it costs to turn a 2 main into a 4 main?

Warlockk

No idea.

KingRanch4Life

iTrader: (2)

Saw a 460 on craigslist the other day and a 454 that supposedly puts out 700HP...

You'd probably get lucky in a junkyard.. Pull you a engine, bore it out and rebuild