stock crank horse power rating?

Boostang · May 26th, 2009, 02:19 PM

my buddy is selling manley pistons and rods balanced on a stock crank for 500 bucks..
what im wandering is how much horse power can a stock crank hold?
thanks!

LAWNDART02 · May 26th, 2009, 02:27 PM

Most people will say around 400-450 crank hp for the whole rotating assembly. I don't know what the limit of the crank itself is though. Also depends on the RPMs that you run it.

GTermi · May 26th, 2009, 02:28 PM

450 to be safe. Buy a cobra crank (kellogg) if you want to stay 4.6. If you want to stroke it, get a stroker crank

Lefty · May 26th, 2009, 02:37 PM

The crank in my 01 Cobra can handle a shit more than the rods can. The weak link in the 4.6's (excluding 03/04 Cobra's) is the rods/pistons (but mostly the rods).

Boostang · May 26th, 2009, 02:38 PM

i always thought it was 450 for the rods and pistons... you'd think the crank woould hold more hp than the pistons and rods?

Lefty · May 26th, 2009, 02:38 PM

Originally Posted by Boostang

i always thought it was 450 for the rods and pistons... you'd think the crank woould hold more hp than the pistons and rods?

And it does...

Boostang · May 26th, 2009, 02:40 PM

ok... so do you know how much i should push it?

Lefty · May 26th, 2009, 02:41 PM

Originally Posted by Boostang

ok... so do you know how much i should push it?

On your stock motor as it sits right now?

Eagle2000GT · May 26th, 2009, 02:44 PM

I've been told 1000 hp for the block, 600 hp for the crank, 450 hp for the rods/pistons, and 600 hp for the intake.

Lefty · May 26th, 2009, 02:45 PM

Originally Posted by Eagle2000GT

I've been told 1000 hp for the block, 600 hp for the crank, 450 hp for the rods/pistons, and 600 hp for the intake.

Eh, yeah here and there...for a 4V (non 03/04). On a 2V I wouldn't run past 400-425hp.

Boostang · May 26th, 2009, 02:46 PM

yes.. with the forged rods and pistons.. as it sits..

03_StangGuy · May 26th, 2009, 03:03 PM

Originally Posted by Eagle2000GT

I've been told 1000 hp for the block, 600 hp for the crank, 450 hp for the rods/pistons, and 600 hp for the intake.

Thats what Ive heard

Exodus · May 26th, 2009, 03:11 PM

The block isnt anything different from a Terminator block so it hold about as much hp as you can through at it. The rods are weak at 450ish, the cast crank is weak at 600ish and the pistons are weak at 500ish hp. If you have any doubts just look at the MMR website and see what they spec for parts and pieces. They use a cast crank on the MMR 600, and a forged crank on the MMR 800. They still use the same cast block that every GT was biult with.

Lefty · May 26th, 2009, 03:12 PM

Again as stated. Your weakness is basically the rods.

Boostang · May 26th, 2009, 03:29 PM

ok so with everything forged except the crank i should be ok at 550?

03SonicBoom · May 26th, 2009, 03:37 PM

Is the weakness of these motors in the rods?

Exodus · May 26th, 2009, 03:40 PM

I would say so. I dont know if I would push it anymore than that on a cast crank. Seriously though, if your in there, do the crank. Then theres no limit so to speak. You will run out of money before you get to the point of break a block. I would really think hard about going ahead and buying a crank to, because if you get to the point of needed one, your going to spend all that money again on labor to change the crank. 700 is alot but worth it when considering how much its going to cost to swap out that cast crank to a forged one.

Exodus · May 26th, 2009, 03:42 PM

MMR is rating that setup you are talking about at 600 crank hp. Thats forged pistons, I beam rods, and cast crank.

Black Bullitt · May 26th, 2009, 04:20 PM

According to MMR and others 600 is the limit on a cast crank, but you also can't rev it to the moon either. Your best to be safe and do it once by getting a forged crank and call it a day.

MIKE 04 GT · May 26th, 2009, 04:25 PM

if i already had everything else forged i would go ahead and get a cobra crank just to be safe.

May 26th, 2009, 02:19 PM	#1
Boostang Hardcore Enthusiast 1997 Mustang GT 11.01@128.32 Join Date: Jan 2009 Location: Seale, Alabama Posts: 1,748 iTrader: 0 reviews	stock crank horse power rating? my buddy is selling manley pistons and rods balanced on a stock crank for 500 bucks.. what im wandering is how much horse power can a stock crank hold? thanks! __________________ If It Dont Flow It Wont Go!!! forged pistons,teksid block and a romeo cast cranks for sale.. pm if interested.. selling them for next too nothing

May 26th, 2009, 02:27 PM	#2
LAWNDART02 Regular 02 GT Join Date: Aug 2008 Location: Detroit Posts: 333 iTrader: 0 reviews	Most people will say around 400-450 crank hp for the whole rotating assembly. I don't know what the limit of the crank itself is though. Also depends on the RPMs that you run it. __________________ 02 2v 5sp- 9lb KB 2.1L I/C, 90MAF, 75mmStack TB, FLSFC's, Magnaflow C/B, NT555R's, MGW shift, Black Sabbath

May 26th, 2009, 02:28 PM	#3
GTermi Enthusiast 2004 Mustang GT Join Date: Mar 2009 Location: Fort Worth Posts: 640 iTrader: 0 reviews	450 to be safe. Buy a cobra crank (kellogg) if you want to stay 4.6. If you want to stroke it, get a stroker crank __________________ My Car- 2004 Mustang GT Her Car- 2011 V6 Auto Premium Saving up for either a 2009 Shelby GT500 or a 2011 5.0...Can't decide!

May 26th, 2009, 02:37 PM	#4
Lefty The Doctor '01 Cobra Vert. Join Date: Jun 2007 Location: Mechanicsburg, PA Posts: 27,388 iTrader: 11 reviews	The crank in my 01 Cobra can handle a shit more than the rods can. The weak link in the 4.6's (excluding 03/04 Cobra's) is the rods/pistons (but mostly the rods). __________________ 2008 Acura TL Type-S (the daily) 2006 Yamaha R6 50th Anniversary Edition (the other toy)

May 26th, 2009, 02:38 PM	#5
Boostang Hardcore Enthusiast 1997 Mustang GT 11.01@128.32 Join Date: Jan 2009 Location: Seale, Alabama Posts: 1,748 iTrader: 0 reviews	i always thought it was 450 for the rods and pistons... you'd think the crank woould hold more hp than the pistons and rods? __________________ If It Dont Flow It Wont Go!!! forged pistons,teksid block and a romeo cast cranks for sale.. pm if interested.. selling them for next too nothing

May 26th, 2009, 02:40 PM	#7
Boostang Hardcore Enthusiast 1997 Mustang GT 11.01@128.32 Join Date: Jan 2009 Location: Seale, Alabama Posts: 1,748 iTrader: 0 reviews	ok... so do you know how much i should push it? __________________ If It Dont Flow It Wont Go!!! forged pistons,teksid block and a romeo cast cranks for sale.. pm if interested.. selling them for next too nothing

May 26th, 2009, 02:44 PM	#9
Eagle2000GT MM Fanatic 2000 Mustang GT 12.73@111.36 Join Date: Aug 2007 Location: Shelbyville, IN Posts: 4,736 iTrader: 1 reviews	I've been told 1000 hp for the block, 600 hp for the crank, 450 hp for the rods/pistons, and 600 hp for the intake. __________________ ProCharger P-1SC, 9 psi, STD 396/383; Uncorrected 388/375; SAE 383/370 Mods list in Garage.

May 26th, 2009, 02:46 PM	#11
Boostang Hardcore Enthusiast 1997 Mustang GT 11.01@128.32 Join Date: Jan 2009 Location: Seale, Alabama Posts: 1,748 iTrader: 0 reviews	yes.. with the forged rods and pistons.. as it sits.. __________________ If It Dont Flow It Wont Go!!! forged pistons,teksid block and a romeo cast cranks for sale.. pm if interested.. selling them for next too nothing

May 26th, 2009, 03:11 PM	#13
Exodus Regular 02 mineral grey GT SORC 29 miles 13 mins 14 secs Join Date: Aug 2008 Location: Nebraska Posts: 411 iTrader: 0 reviews	The block isnt anything different from a Terminator block so it hold about as much hp as you can through at it. The rods are weak at 450ish, the cast crank is weak at 600ish and the pistons are weak at 500ish hp. If you have any doubts just look at the MMR website and see what they spec for parts and pieces. They use a cast crank on the MMR 600, and a forged crank on the MMR 800. They still use the same cast block that every GT was biult with. __________________

May 26th, 2009, 03:12 PM	#14
Lefty The Doctor '01 Cobra Vert. Join Date: Jun 2007 Location: Mechanicsburg, PA Posts: 27,388 iTrader: 11 reviews	Again as stated. Your weakness is basically the rods. __________________ 2008 Acura TL Type-S (the daily) 2006 Yamaha R6 50th Anniversary Edition (the other toy)

May 26th, 2009, 03:29 PM	#15
Boostang Hardcore Enthusiast 1997 Mustang GT 11.01@128.32 Join Date: Jan 2009 Location: Seale, Alabama Posts: 1,748 iTrader: 0 reviews	ok so with everything forged except the crank i should be ok at 550? __________________ If It Dont Flow It Wont Go!!! forged pistons,teksid block and a romeo cast cranks for sale.. pm if interested.. selling them for next too nothing

May 26th, 2009, 03:37 PM	#16
03SonicBoom Moderator 2003 Grand Cherokee Join Date: Jul 2008 Location: Indiana Posts: 5,982 iTrader: 0 reviews	Is the weakness of these motors in the rods? __________________

May 26th, 2009, 03:40 PM	#17
Exodus Regular 02 mineral grey GT SORC 29 miles 13 mins 14 secs Join Date: Aug 2008 Location: Nebraska Posts: 411 iTrader: 0 reviews	I would say so. I dont know if I would push it anymore than that on a cast crank. Seriously though, if your in there, do the crank. Then theres no limit so to speak. You will run out of money before you get to the point of break a block. I would really think hard about going ahead and buying a crank to, because if you get to the point of needed one, your going to spend all that money again on labor to change the crank. 700 is alot but worth it when considering how much its going to cost to swap out that cast crank to a forged one. __________________

May 26th, 2009, 03:42 PM	#18
Exodus Regular 02 mineral grey GT SORC 29 miles 13 mins 14 secs Join Date: Aug 2008 Location: Nebraska Posts: 411 iTrader: 0 reviews	MMR is rating that setup you are talking about at 600 crank hp. Thats forged pistons, I beam rods, and cast crank. __________________

May 26th, 2009, 04:25 PM	#20
MIKE 04 GT Regular 04 MUSTANG GT 14.5 @ 97.2 Join Date: Oct 2007 Location: SC Posts: 312 iTrader: 0 reviews	if i already had everything else forged i would go ahead and get a cobra crank just to be safe.

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