Reliable HP/Torque Through 5.0

rlauer · 05-28-2007, 08:15 PM

How much reliable/streetable HP/Torque can be run through a stock 5.0 block with stock rods, pistons, and crank? What if you added a stud girdle to help support the bottom end?

Thanks,

Rob

thatdavidkid · 05-28-2007, 08:40 PM

depends on the year.. i'm assuming u mean a 5.0 ho.. roller?

rlauer · 05-28-2007, 08:55 PM

It is out of a 1994.

Thanks,

racer99 · 05-29-2007, 09:06 AM

General consensus is 525 to 550 hp with a safe tune.
This is with forged pistons.The later hyperteutectic
pistons not quite as much.
Some have gone 600 but its on borrowed time.
A stud girdle just keeps the parts in a nice pile
when it lets go.
The roller is the weakest of the Windsor blocks.

**thesource** · 05-29-2007, 10:18 AM

Safely ??? I'd say 400 hp on that year engine with a good tune although there are several people running much higher than that .

I had a customer crack a roller block with a N/A 347 in less than 2 weeks . The engine was maybe making 400 at the flywheel and it was built by Janke engines here in San Antonio .

thunderchicken · 05-29-2007, 10:58 PM

Quote:

Originally Posted by thesource

Safely ??? I'd say 400 hp on that year engine with a good tune although there are several people running much higher than that .

I had a customer crack a roller block with a N/A 347 in less than 2 weeks . The engine was maybe making 400 at the flywheel and it was built by Janke engines here in San Antonio .

Did they abuse it to make that happen?

CraZy6 · 05-29-2007, 11:33 PM

I think Mike Murillo will only tune 500hp on a stock block. SO 500hp is possible, but to say how long it will last, just depends on hard you ride it.

311-420 · 05-29-2007, 11:55 PM

couple guys on here making around 500 at the wheels with stock rotating assemblies. if you get it tuned and the air/fuel is safe, your pistons should stay intact as long as you dont over-spin the engine.

**thesource** · 05-30-2007, 06:26 PM

Quote:

Originally Posted by thunderchicken

Did they abuse it to make that happen?

I'm not too sure what the hell happened with it . I almost think the block might have been damaged before it was used to build the 347 but would think they would have caught that over at Janke's when building it ........

Lifted78Chevy · 05-31-2007, 11:21 PM

from what i've read , 500 range is about max on a stock block, but like it goes you abuse it, it will break no matter what motor it is, so alot of it depends on your driven style and how hard you get on it, if u drop a ton os NOS on the car or tooooo much boost with not enough fuel your gonna have some problems sooner or later, so when u build it make sure you get all the right piece's working together and air fuel ratio right and don't over rev the motor and u should be good to go.

d4rkpri35t · 06-02-2007, 04:26 AM

an old friend of mine pushed his to about 625 before he fuked the block up.. this was bored and stroked 331...

thunderchicken · 06-02-2007, 03:31 PM

Quote:

Originally Posted by thesource

I'm not too sure what the hell happened with it . I almost think the block might have been damaged before it was used to build the 347 but would think they would have caught that over at Janke's when building it ........

Yup that true....Jenke's is very reputable.I knew a friend that had is race engines built there..

**psiperformance** · 06-03-2007, 11:45 AM

The stock block can take reliably 400 - 450 rwhp as long as you dont detonate it.

anything over that detonation or not your rollign the dice..

and main girldes do NOTHING for them as far as stoping the block cracking .. since they dont crack in the mains to start with the cracks start in the thin lifter valley when work there way DOWN to the mains not vice versa.

thunderchicken · 06-03-2007, 01:35 PM

Quote:

Originally Posted by psiperformance

The stock block can take reliably 400 - 450 rwhp as long as you dont detonate it.

anything over that detonation or not your rollign the dice..

and main girldes do NOTHING for them as far as stoping the block cracking .. since they dont crack in the mains to start with the cracks start in the thin lifter valley when work there way DOWN to the mains not vice versa.

That makes sense...

95 GTS · 06-05-2007, 05:00 PM

Quote:

Originally Posted by psiperformance

The stock block can take reliably 400 - 450 rwhp as long as you dont detonate it.

anything over that detonation or not your rollign the dice..

and main girldes do NOTHING for them as far as stoping the block cracking .. since they dont crack in the mains to start with the cracks start in the thin lifter valley when work there way DOWN to the mains not vice versa.

I agree 100 percent

94 has hyper pistons so you are limited in that respect as compared to the 92 and earlier with trw forged. Now this is with stock rotating assembly.

a turbo application will be able to hold more than a supercharger application, as will a nitrous (if tuned correctly) It doesnt have the power strain and the sideways tension on the crank snout that a supercharger creates. SC takes power to make power.

Chris' cobra made 524 on stock longblock with an hp turbo kit. then 570s with heads and a victor 5.0 intake. Thats with non forged pistons and a great tune!.

Jeremy's coupe with the TRWs made 565/640 on the giggle gas with a HCI setup.

what should you daily drive safely?

SC 400-450 and a wee more with a turbo. Plus the turbo you can turn down for longevity.

05-28-2007, 08:15 PM	#1
rlauer Registered User Join Date: Feb 2007 Location: Richmond, TX Posts: 28 Trader Rating: (0)	Reliable HP/Torque Through 5.0 How much reliable/streetable HP/Torque can be run through a stock 5.0 block with stock rods, pistons, and crank? What if you added a stud girdle to help support the bottom end? Thanks, Rob

05-28-2007, 08:40 PM	#2
thatdavidkid looks mean, workin' on the fast Join Date: Oct 2006 Location: Denton Posts: 3,903 Trader Rating: (1)	depends on the year.. i'm assuming u mean a 5.0 ho.. roller? __________________ 1991 lx coupe t-5 swap, billit quadrant, upr firewall adjuster, steeda tri-ax, custom jb tool and fab one off subframe connectors, 8.8 w/posi and 4.10's with 5 lug axles, tubular upper control arms, southside lowers, and pbr twin piston front calipers with "snowflake" wheels

05-29-2007, 09:06 AM	#4
racer99 Box Foxes Rule!!! Join Date: Feb 2005 Location: San Antonio TX Posts: 1,379 Trader Rating: (1)	General consensus is 525 to 550 hp with a safe tune. This is with forged pistons.The later hyperteutectic pistons not quite as much. Some have gone 600 but its on borrowed time. A stud girdle just keeps the parts in a nice pile when it lets go. The roller is the weakest of the Windsor blocks. __________________ Never underestimate the unpredictability of stupidity! 78 Zephyr, 82 Granada Wagon, 88 Mustang 2.3T 94 GT

05-29-2007, 10:18 AM	#5
thesource LSS Sponsor Join Date: Nov 2004 Location: in a hole building transmissions Posts: 3,507 Trader Rating: (13)	Safely ??? I'd say 400 hp on that year engine with a good tune although there are several people running much higher than that . I had a customer crack a roller block with a N/A 347 in less than 2 weeks . The engine was maybe making 400 at the flywheel and it was built by Janke engines here in San Antonio . __________________ Texas Motorsports Myspace Texas Motorsports Photobucket

05-29-2007, 11:55 PM	#8
311-420 you smell that?! Join Date: Sep 2004 Location: in between colleges Posts: 4,153 Trader Rating: (0)	couple guys on here making around 500 at the wheels with stock rotating assemblies. if you get it tuned and the air/fuel is safe, your pistons should stay intact as long as you dont over-spin the engine. __________________ 94 Steeda- sold- 355rwhp on a 75 02 Roush 360R- sold- 400rwhp at 8psi 04 Mach 1- K&N drop-in, Roy's 3/8 spacer, Steeda tri-ax, Pypes o/r X, Super 44s, 04 Cobra IRS, 4.10s

05-28-2007, 08:55 PM	#3
rlauer Registered User Join Date: Feb 2007 Location: Richmond, TX Posts: 28 Trader Rating: (0)	It is out of a 1994. Thanks,

05-29-2007, 11:33 PM	#7
CraZy6 Registered User Join Date: Jun 2003 Location: Corpus Christi,TX Posts: 836 Trader Rating: (0)	I think Mike Murillo will only tune 500hp on a stock block. SO 500hp is possible, but to say how long it will last, just depends on hard you ride it.

05-31-2007, 11:21 PM	#10
Lifted78Chevy BLOWN & STROKED way i like it. Join Date: Feb 2005 Location: San Antonio Posts: 682 Trader Rating: (2)	from what i've read , 500 range is about max on a stock block, but like it goes you abuse it, it will break no matter what motor it is, so alot of it depends on your driven style and how hard you get on it, if u drop a ton os NOS on the car or tooooo much boost with not enough fuel your gonna have some problems sooner or later, so when u build it make sure you get all the right piece's working together and air fuel ratio right and don't over rev the motor and u should be good to go. __________________ 1989 LX Coupe 5.0 HP/457 at the fly-514 est. loss 12% get it to the ground TQ/448 at the fly- 501 est. loss 12% to get it to the ground Tuned at PSI.pulled threw 5800 no stop shut it down at 6 grand.... Next motor all out with it...hope make 6-7 hundred hp

06-02-2007, 04:26 AM	#11
d4rkpri35t '87 LX 'n '95 GT Join Date: Feb 2007 Location: Sweetwater Posts: 352 Trader Rating: (0)	an old friend of mine pushed his to about 625 before he fuked the block up.. this was bored and stroked 331... __________________ 95 GT 5.0 w/ some bolt-ons, 2" Drop Eibach Suspension, C/C Plates, 17" Steedas 87 LX 306ci Forged w/ bolt-ons, 4.10's, Built T5, Weld Rodlites, BBK Headers, O/R X, Magnaflow Dumps.

06-03-2007, 11:45 AM	#13
psiperformance LSS Sponsor Join Date: Mar 2006 Posts: 876 Trader Rating: (1)	The stock block can take reliably 400 - 450 rwhp as long as you dont detonate it. anything over that detonation or not your rollign the dice.. and main girldes do NOTHING for them as far as stoping the block cracking .. since they dont crack in the mains to start with the cracks start in the thin lifter valley when work there way DOWN to the mains not vice versa. __________________ PSI Performance Solutions 210-655-6546 10811 nacogdoches road San Antonio TX 78217 cmr tuners and full service performance shop.

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