what do you think our stock blocks can handle?

**07roushgt** · 07-03-2009 05:37 AM

just as the title says. what is the highest 3V you have seen with the stock block?!? do you think 600 RWHP is safe? do you think 650 RWHP is safe? do you think 700 RWHP is safe?

**CaliSpecial** · 07-03-2009 06:25 AM

I'm no expert, but popular opinion seems to be 500RWHP, with a good tune. Any more than that and it seems it's just a matter of time!

With a bad tune, not even 400RWHP is safe!

**07roushgt** · 07-03-2009 06:28 AM

Originally Posted by CaliSpecial

I'm no expert, but popular opinion seems to be 500RWHP, with a good tune. Any more than that and it seems it's just a matter of time!

With a bad tune, not even 400RWHP is safe!

I am talking the block itself, not the stock rotating assembly in said block.

**CaliSpecial** · 07-03-2009 08:33 AM

Originally Posted by 07roushgt

I am talking the block itself, not the stock rotating assembly in said block.

Ah, sorry... my bad!

Someone will be along shortly...

**flyby763** · 07-03-2009 08:49 AM

I think the blocks are pretty stong, like 900...Like said before its usually the stock rotating assembly poking holes through them that kills them.

**NastyStang113** · 07-03-2009 08:51 AM

~800 rwhp would be safe.

**07roushgt** · 07-03-2009 08:58 AM

Originally Posted by NastyStang113

~800 rwhp would be safe.

perfect. thanks!

**NastyStang113** · 07-03-2009 11:30 AM

Originally Posted by 07roushgt

perfect. thanks!

No problem.

**madtel4** · 07-03-2009 03:02 PM

I have read that the 3v aluminum block is very strong, but you have to wonder why Ford went with a cast iron block for the GT500.
Lee

**rondawg0410** · 07-03-2009 03:13 PM

I'd say no more then 700 hp. The temps is what i worry about. On the Trak pak with the TVS after 10 mins running hard 250 Head temps. all the boost just gets the motor hot, after so long i'm sure cracks will develop

**360Rocket** · 07-03-2009 07:05 PM

Originally Posted by madtel4

but you have to wonder why Ford went with a cast iron block for the GT500.
Lee

When you get over 500 HP, you tend to twist the aluminum blocks. Cobras have iron blocks as well. Same thing with the LS1/LS2 GM blocks. Thats why they developed the LSX block. A lot of guys use the LS3 truck block as well.

**jpetre** · 07-06-2009 10:26 AM

I thought I read many years ago that the 3V block was pretty strong could handle about 700~800 horses, just the rotating assembly was bad.

So in the Cobra (GT500) for cost and strenght they went with steal. Alum. was 'moving' too much.

**NastyStang113** · 07-06-2009 11:43 AM

The blocks are fine up to ~800 rwhp. The rods are the weakest part of the puzzle. The stock crank is good up to ~700 rwhp.

**EAGLE 5** · 07-06-2009 02:46 PM

Are they sleeved?

**jpetre** · 07-06-2009 07:37 PM

Originally Posted by EAGLE 5

Are they sleeved?

I believe all 4.6 are steal sleeved. Don't hold me too that, but pretty sure!

**Iflyagfour** · 07-07-2009 01:30 PM

And just what are you planning here 07???

**07roushgt** · 07-07-2009 02:00 PM

Originally Posted by Iflyagfour

And just what are you planning here 07???

just doing some cost analysis at this point. a lot depends on what the 2011 5.0 has for guts.

if it don't come forged, the motor in mine now, may just end up on an engine stand

**spindlecone** · 07-07-2009 02:18 PM

If your talking about the Alum. Block Coyote engine, do not think it would have a forged bottom end at only 400 H.P.
No need for it at those numbers.

Thread: what do you think our stock blocks can handle?

Thread Tools

Display

what do you think our stock blocks can handle?

Bookmarks

Bookmarks

Posting Permissions