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Author
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Topic: Stock block hp rating?
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Ryan_LX
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Member # 7089
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posted
 
 
Anyone know how much HP a stock 1990 302 block can handle? ![[patriot]](graemlins/patriot.gif)
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Jesus is king!
Posts: 1718 | From: no where | Registered: Sep 2006
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92stangLX
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Member # 3252
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posted
450-500 depending on the tune
Posts: 5302 | From: San Francisco | Registered: Sep 2003
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BIGBALLFACTOR
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Member # 7277
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posted
650 to 700 or so at the fly wheel
500 to 575 at the rear wheel but it will be on barrowed time
Posts: 6908 | From: okc | Registered: Dec 2006
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Mean 5.0
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Member # 9822
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posted
Fasthatch knows his shit, thats about what i hear, around 550-575 to the tires is the limit and you are on borrowed time, keep it around 450-500 to the tire for a stock block i would think...
Posts: 93 | From: Sacramento, CA | Registered: Mar 2010
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BlowN67
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Member # 4229
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posted
If your balance is spot on your borrowed time is extended. ![[Big Grin]](biggrin.gif)
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AIM gonein67 JOHN
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Posts: 9809 | From: Home of LARD | Registered: Mar 2004
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BIGBALLFACTOR
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Member # 7277
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posted
quote:
Originally posted by BlowN67:
If your balance is spot on your borrowed time is extended.
yes it is how the ltd going john
Posts: 6908 | From: okc | Registered: Dec 2006
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wilit
Mustang Messiah
Member # 3367
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posted
Here's a video link to a pull on Chris Hallbrook's dyno with the 347 Jay Allen built and assembled. Engine did pretty darn well considering the parts Jay limited himself to using in order to prove a point. DO NOT try this at home with your Mexican block!!!
YouTube - Camshaft Innovations 347 Engine Dyno
Basic combo:
[LIST]
[*]Pro Systems Dominator Carburetor
[*]Wilson Manifolds / BG Modified Victor Jr
[*]TEA / [COLOR=green]Ci[/COLOR] Prepped TFS TW 190cc Fast As Cast Heads
[*]Competition Bowl Blend
[*]Milled to 58cc
[*]Comp Cams Ultra Gold 7/16 x 1.72 Roller Rockers
[*][COLOR=green]Ci[/COLOR] Solid Roller Camshaft on a Billet Core
[*]Comp Cams 838-16 Solid Roller Lifters
[*]Comp Cams 8138 100% Adjustable Timing Kit
[*]Probe TFS TW 1.090" F/T Pistons
[*]10.68:1 Compression @ zero deck & 58cc chamber
[*]Scat 5.400" x 2.123" H-Beam Rods
[*]3.400" Steel CHP/Eagle Crankshaft
[*]ATI Dampner
[*]RAM Aluminum Wheel
[*]Canton Pan
[*]Probe Steel Main Girdle
[*]ARP Main Studs
[*]ARP 7/16 Head Studs
[*]2.00" Accufab Headers with 4.00" collector
[*]5.00" oval NASCAR Exhaust
[*]5.00" oval Custom Mufflers
[*]Michigan 77 Bearings through out
[*]GZ vacuum Pump (after rings seat)
[*]Royal Purple Oil
[*]Mexican 302 Block
[ March 05, 2010, 07:37 PM: Message edited by: wilit ]
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"If a man hasn't found something worth dying for, he isn't fit to live." - Martin Luther King Jr.
Posts: 4793 | From: 37.78514° North 122.40100° West | Registered: Oct 2003
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Ryan_LX
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Member # 7089
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posted
good info keep it comin
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Jesus is king!
Posts: 1718 | From: no where | Registered: Sep 2006
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street_illegal_stang
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Member # 1554
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posted
quote:
Originally posted by RyanM...:
Anyone know how much HP a stock 1990 302 block can handle?
1.21 gigawatts
[ March 05, 2010, 08:49 PM: Message edited by: street_illegal_stang ]
Posts: 1276 | From: Long Beach C.A | Registered: Jul 2002
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SmokinLX
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Member # 1684
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posted
450-600 rwhp depending on tune, luck, good harmonic balncer, adequate fuel delivery, good cooling system "aluminum raiator" and driving style. Also have to consider power adder used to accomplish rwhp number's, supercharging reqires more power to reach higher rwhp #'s because it uses power to spin the belt for the supercharger "I have heard 50 or more HP & more at full boogie ![[Eek!]](eek.gif) " as compared to turbo's which utilize expened exhaust gases to spool up and nitrous which obviously does'nt require any additional power. For longest life expectancy stay around 500 rwhp get a good tune & balancer & intercool boost "to reduce detonation" and don't drive hard all the time oh and cross Your finger's cause it can blow up while getting the initial tune or hold up for year's!
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Dont claim power if ya cant mile per hour. 10 second AOD
Posts: 4388 | From: East Bay | Registered: Aug 2002
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phildog
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Member # 1214
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posted
It's not like stock blocks have a horsepower sensor!
People have blown up bone stock motors. I have heard of more than one road race engine that gave up at around 300 flywheel horsepower. The thing is, it costs the same to machine a stock block as it does a good aftermarket block. The rotating assembly doesn't care what it is dropped into, and it takes the same amount of labor to build a ticking time bomb(stock block) as it does a real block (Dart, etc.)
As stated before, machine work, balancing, part quality, cooling, block quality(core shift), tuning and driving are all factors that contribute to the longevity of a block. As I see it, if you can really afford to build a 500hp plus car, then you can afford a 2k block.
Posts: 1554 | From: 510 | Registered: Apr 2002
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Camara90
1%
Member # 134
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posted
I agree, I have seen it from every horsepower level. But they say at around 500rwhp the lifter galley is the weakest point, and like to split. Machining that Dart block is a lot more expensive though.
quote:
Originally posted by phildog:
It's not like stock blocks have a horsepower sensor!
People have blown up bone stock motors. I have heard of more than one road race engine that gave up at around 300 flywheel horsepower. The thing is, it costs the same to machine a stock block as it does a good aftermarket block. The rotating assembly doesn't care what it is dropped into, and it takes the same amount of labor to build a ticking time bomb(stock block) as it does a real block (Dart, etc.)
As stated before, machine work, balancing, part quality, cooling, block quality(core shift), tuning and driving are all factors that contribute to the longevity of a block. As I see it, if you can really afford to build a 500hp plus car, then you can afford a 2k block.
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92GT,stock short block,9:1 TFS 170's,perf rpm,custom cam,1 5/8 shorties,C4 trans.
std. 356hp, 350tq
11.85@111.9mph on motor.
Posts: 2351 | From: 707 | Registered: Jan 2001
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phildog
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Member # 1214
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posted
Why is a Dart block more expensive to machine???
Posts: 1554 | From: 510 | Registered: Apr 2002
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warhorse58gt
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Member # 7702
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posted
quote:
Originally posted by phildog:
Why is a Dart block more expensive to machine???
lol.. it cost me the same to machine my dart block, as it has to do a friends stock block..
the price is due to the kind of work you do to the motor..
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WOLFPACK RACING
With guns, we are 'citizens'. Without them, we are 'subjects'.
83gt 354ci sbf 9.40 @ 143
77 cobra 2 171ci 97hp of pure fury!
Posts: 4200 | From: 209 | Registered: Jun 2007
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white1990stang
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Member # 2307
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posted
i was running around 550 on a stock block with no problems. had a very good balancer. car ran perfect with no problems. also was revving to 6500.
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You must be fast, cause I was haullin ass when I passed you.
Posts: 1308 | From: martinez | Registered: Jan 2003
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phildog
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Member # 1214
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posted
That was what I thought, warhorse, same processes, better base material. Interested to know why camara claims it's more...
Posts: 1554 | From: 510 | Registered: Apr 2002
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Camara90
1%
Member # 134
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posted
Ok I guess you cant really say a lot more for machine work. I am not an expert, because I have not built a Dart block myself. My understanding is that generally the lifter bores are very tight and require extra clearancing, as well as modification for roller lifters. I have heard machine shops quote anywhere from $500-$1100 for the work, and they are the best out of the box aftermarket block. So some big gaps there, depending how the block is prior to machine work. You still got balancing on top of that price. I have been in his shoes before and been worying about splitting a stock block, just do it right the first time and get a Dart I wouldnt even think twice about the Dart if the motor already needed a rebuild. But there are also other costs to consider as well like a new oil pan for the 4 bolt main. But hey gotta pay to play
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92GT,stock short block,9:1 TFS 170's,perf rpm,custom cam,1 5/8 shorties,C4 trans.
std. 356hp, 350tq
11.85@111.9mph on motor.
Posts: 2351 | From: 707 | Registered: Jan 2001
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turbo50
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Member # 6700
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posted
If you are worried about making enough hp to split the stock block then it makes way more sense to spend a few thousand more and upgrade. Well worth it IMO.
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.........when was the last time YOU built something with YOUR own hands?
I offer quality sidework at reasonable prices. PM ME
Posts: 7606 | From: Discovery Bay, California | Registered: Apr 2006
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Ryan_LX
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Member # 7089
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posted
quote:
Originally posted by turbo50:
If you are worried about making enough hp to split the stock block then it makes way more sense to spend a few thousand more and upgrade. Well worth it IMO.
good point
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Jesus is king!
Posts: 1718 | From: no where | Registered: Sep 2006
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phildog
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Member # 1214
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posted
Stock pan will work if only the middle three caps are 4 bolt, as in the Boss and SHP Dart. But think about it, if you are spending 2k on a block before machine work, do you really want to protect your investment with a stock, 5 qt pan with no baffles?
I think that the predominating theme here is that a stock block will work, but not for very long if it is getting beaten on, raced and pushed to the limits.
Posts: 1554 | From: 510 | Registered: Apr 2002
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Ryan_LX
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Member # 7089
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posted
ANY FEEDBACK ON THE DART SHP VS THE BOSS BLOCK?
I think they are around the same price.
[ March 09, 2010, 09:33 PM: Message edited by: RyanM... ]
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Jesus is king!
Posts: 1718 | From: no where | Registered: Sep 2006
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Camara90
1%
Member # 134
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posted
go Dart, supposed to be the best out of the box block.
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92GT,stock short block,9:1 TFS 170's,perf rpm,custom cam,1 5/8 shorties,C4 trans.
std. 356hp, 350tq
11.85@111.9mph on motor.
Posts: 2351 | From: 707 | Registered: Jan 2001
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Mr.Lucky
CAFords OG
Member # 1772
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posted
quote:
Originally posted by RyanM...:
ANY FEEDBACK ON THE DART SHP VS THE BOSS BLOCK?
I think they are around the same price.
the SHP block and dart iron eagle are a few $100 apart but worlds apart when coming to strength. From talking with a rep about the shp block it raises your limits from 650fly/550wheel stock to ~750fly/650wheel. But the iron eagle will support well over 1000rwhp easily. As far as the boss I talked to one builder who wasn't a big fan as long stroke combinations were causing the piston skirts to exit the bottom of the cylider bore. Again that was a builders opinion. The iron eagle from dart will give you the most ci, best strength and most of all peace of mind and integrity!
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95GT: Bolt ons.
Good sellers/buyers: Stangs R Us, 1SicGt, sn4bwc, racsirx, WickedStang, Autumnstang97, cali95gt
Posts: 4197 | From: Manteca | Registered: Sep 2002
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