stock block handling HP question.4.6 Litre

BULLITT_2008 · 01-31-2009

ok so how much will our stock block handle not the internals but the block itself cause i was gonna buy the mmr 5.0 stroker which is 3200 but i can buy the stroker internals for 1800 for the stock block which i will build myself but im just wondering if the stock block it self can handle lets say 700hp

**stlwagon** · 01-31-2009

The block can handle 700 rwhp with no problem.

BULLITT_2008 · 01-31-2009

Quote:

Originally Posted by stlwagon

The block can handle 700 rwhp with no problem.

good cause i want to keep the alum. block for weight savings another question all these places selling aftermarket heads are they just stock head fixed up or are they a different casting

jsusisaliv · 02-01-2009

HMMMM you say a stock 4.6 block will handle 700 hp easy????
I don't know about that at all. You better try that again...

AlloyGT · 02-01-2009

Yes, the block will easily handle that....the rotating assemby is another story.

Mojave Dave · 02-01-2009

It appears from ads like MMR etc that the stock block (not internals) is used for most options up to at least 950hp. The stock block is an option in most of the short blocks for sale. There is apparently a more recent block that is better, but I am not familiar with it. I really think from what I have read that the stock alum block is ok for 700, but mmv. I do plan to take mine up to about 600 with new internals, so I am with you on the concern about it.

jsusisaliv · 02-01-2009

NICE!!
I never knew that the new alum 4.6 blocks will handle that much power!! The 5.0 blocks are good for 500 and your pushing it there from what I hear. Yeah you do have to remember that the rotating assemblies are still not the strongest. But the block handling 700 HP with no problem is something I have not heard although I am still stuck on the 302

**stlwagon** · 02-02-2009

The block itself is very good. If the pistons and connecting rods were better, this would be a great engine.

Ricesmoker · 02-02-2009

There are people running 1000 RWHP on the stock aluminum block
Its a great block. The crank, rods and pistons arent so great but if you replace them..... 700 RWHP no issue.

**stlwagon** · 02-02-2009

Quote:

Originally Posted by Ricesmoker

There are people running 1000 RWHP on the stock aluminum block
Its a great block. The crank, rods and pistons arent so great but if you replace them..... 700 RWHP no issue.

The stock crankshaft is actually very good.

BULLITT_2008 · 02-02-2009

Quote:

Originally Posted by stlwagon

The stock crankshaft is actually very good.

so ya could just go with rod connecting and push and pistons and you would be good but i wat it to be a 5.0 stroker

**stlwagon** · 02-02-2009

Quote:

Originally Posted by BULLITT_2008

so ya could just go with rod connecting and push and pistons and you would be good but i wat it to be a 5.0 stroker

You'd need to replace the crank in that case.