Rotating assy

shamntgmry · September 9th, 2007, 02:48 PM

Got a question. I am looking a a forged rotating assembly for my 03 Gt. With the stock setup the motor redlines at 5700 rpms ok. Well reading about several name brands of pistons, rods, and cranks. How do you know what rpm they are safe to? None of those kits really say much except good to 600 and 700 and 1000 HP. Does any one know about winding this oll 4.6 up?

B0B · September 9th, 2007, 03:09 PM

it redlines at 5700 cause it stops making power around 5500. it will rev higher, but the heads, cams, and intake wont breathe enough for it to go higher. the rotating assembly will handle more rpm's, but it depends on how much power you're putting to it.

MustangMatt96GT · September 9th, 2007, 03:36 PM

Originally Posted by Bob17830

it redlines at 5700 cause it stops making power around 5500. it will rev higher, but the heads, cams, and intake wont breathe enough for it to go higher. the rotating assembly will handle more rpm's, but it depends on how much power you're putting to it.

Wrong. The first to go on a motor that is reving high is the valve springs. If you have valve springs that are aftermarket. I would say its safe to rev it up to about 6500. And as long as you dont stroke your motor, you should be safe to 7500-8000 with valvesprings, forged internals, everything [completely built motor(10-15K)]. Once I have my PI swap done up top, I will be making power above the 6500 mark, but I will be shuting her down around 6300 because I dont want to throw a rod. The rotating assembly in the motor shouldnt be pushed pasted 6500 on a daily basis. I mean sure if u have no limiter and it winds past it for a short time so be it, just as long as u dont run it up above 6500 that often. Sure you will see the motors that are stock short blocks, that are wound up to 7200, but not all will do that and I do not suggest you do that.

shamntgmry · September 9th, 2007, 04:10 PM

Yeah see, if I built the motor with higher strength internals I would like to rev it a little bit higher, ah is 7000 RPMs out of the question safely? And yes like the other guy said if the motor stops making power at say 6000 I can fix that.

MustangMatt96GT · September 9th, 2007, 04:29 PM

well with forged internals I would say7500 is easily safe, aslong as you dont go with a stroked set up. And just by switching cams you can change wehre it makes power!

ItalianBullitt754 · September 9th, 2007, 05:52 PM

Hell if you just had you engine balanced, rods flash ground and shotpeened, ringed it with some TotalSeal Sealed power rings, put in a 7qt (Canton or Moroso) oil pan along with windage tray and upgraded your oil pump, valve springs, heads and cams along with a better breathing intake manifold(Bullitt or trick flow) you should be able to rev to 7k or even 7500rpms safely and make decent power too. I would suggest a better water pump and under drive pullies too. Might want to uncork the exhaust too with some mid or long tube headersm x-pipe and catback. Just add alittle boost for more fun now that the rods are stronger.

ItalianBullitt754 · September 9th, 2007, 05:58 PM

Thats why I love SHO's They can do around 8,000 rpms stock if you chip it. I used to run mine up there all the time.

Badasstang281 · September 9th, 2007, 05:58 PM

or just buy a formula 1 car Engine you will be good for 18,000 rpm's

ItalianBullitt754 · September 9th, 2007, 06:08 PM

Originally Posted by Badasstang281

or just buy a formula 1 car Engine you will be good for 18,000 rpm's

Hell I would if it didn't have to be rebuilt after every certain # of hours of use oh and if they didn't cost $70k+.

Eagle2000GT · September 9th, 2007, 06:22 PM

Why does stroking your motor make a difference?

ItalianBullitt754 · September 9th, 2007, 06:33 PM

Stroking puts more stress on your motor. Rods in particular and the crank. Nothing like throwing a rod or shearing a rod at 7k+rpms. Strokers don't usually like high RPMs. Stroking usually boosts low end torque.

MustangMatt96GT · September 9th, 2007, 07:11 PM

now if you bore it, you can wind it up high, just not when extending the stroke!

ItalianBullitt754 · September 9th, 2007, 07:15 PM

Hell Yeah! A bored out balanced high revving excellent breathing cammed GT. That would rock!

camarosRgay · September 9th, 2007, 08:03 PM

well with good studs, the bored stroker ought to be able to turn the same rpms, wouldnt you think?

G.T. Rags · September 9th, 2007, 08:20 PM

Originally Posted by ItalianBullitt754

Hell Yeah! A bored out balanced high revving excellent breathing cammed GT. That would rock!

too bed that runs about an extra 5k on top of sticker

MustangMatt96GT · September 9th, 2007, 08:24 PM

Originally Posted by camarosRgay

well with good studs, the bored stroker ought to be able to turn the same rpms, wouldnt you think?

no, its just not possible!

And a 3.700 bore stock 4.6 stroke, with PI heads and cams can make 400 plus N/A RWHP.

camarosRgay · September 9th, 2007, 08:52 PM

dut ho wwill that hld up strenght wise to boosted conditions - with a 600-800 rwhp potential?

ItalianBullitt754 · September 9th, 2007, 08:54 PM

Originally Posted by MustangMatt96GT

Originally Posted by camarosRgay

well with good studs, the bored stroker ought to be able to turn the same rpms, wouldnt you think?

no, its just not possible!

And a 3.700 bore stock 4.6 stroke, with PI heads and cams can make 400 plus N/A RWHP.

?????? Huh? What world is that from? Is that 1000 feet below sea level? Is that on Nitrous?

Drgnracin72 · September 9th, 2007, 08:55 PM

the stroker can and will turn rpms faster than that....... as long as you use quality parts buttoning it up and have good parts in it. mine is good to 8000 but stop making power at 6500 so it shifts at around 7000

Drgnracin72 · September 9th, 2007, 08:56 PM

also its going to take some monstrous heads and cams to turn the rpm its gonna take to make that kind of power all motor. ive seen them but its an expensive engine and not gonna be real streetable becasue of the high rpms that it will make pwoer at

September 9th, 2007, 02:48 PM	#1
shamntgmry Regular Join Date: Aug 2007 Posts: 107 iTrader: 0 reviews	Rotating assy Got a question. I am looking a a forged rotating assembly for my 03 Gt. With the stock setup the motor redlines at 5700 rpms ok. Well reading about several name brands of pistons, rods, and cranks. How do you know what rpm they are safe to? None of those kits really say much except good to 600 and 700 and 1000 HP. Does any one know about winding this oll 4.6 up?

September 9th, 2007, 03:09 PM	#2
B0B Boost gets you laid 2001 Mustang GT 12.93@113.7 (on the 18's) Join Date: Dec 2006 Location: Milton, WA Posts: 2,601 iTrader: 2 reviews	it redlines at 5700 cause it stops making power around 5500. it will rev higher, but the heads, cams, and intake wont breathe enough for it to go higher. the rotating assembly will handle more rpm's, but it depends on how much power you're putting to it. __________________ '01 GT. Just a couple Bolt-ons. 0rwhp 0rwtq. Epic Turbo build in progress 2003 Rubicon (wheelin rig) 2008 Silverado 4x4 (towin rig/road queen) 2009 KTM 450 XC-W (Brap Brap!)

September 9th, 2007, 04:29 PM	#5
MustangMatt96GT Proud American 1996 Mustang GT 10.76 @ 122 with d/a of 8365 ft Join Date: Dec 2006 Location: Lakewood, CO Posts: 10,168 iTrader: 3 reviews	well with forged internals I would say7500 is easily safe, aslong as you dont go with a stroked set up. And just by switching cams you can change wehre it makes power! __________________ RIP Travis Billings Special Thanks to: Andrews Racing Transmissions Baseline Suspensions Blown Small Block Ford with a hole in the block. 9.5 Dart Block 400 CI being saved for. Just because you can fuck a cactus doesn't mean you should. Never Lift Racecars

September 9th, 2007, 05:52 PM	#6
ItalianBullitt754 Regular Join Date: Jul 2007 Location: Naples, Italy Posts: 143 iTrader: 0 reviews	Hell if you just had you engine balanced, rods flash ground and shotpeened, ringed it with some TotalSeal Sealed power rings, put in a 7qt (Canton or Moroso) oil pan along with windage tray and upgraded your oil pump, valve springs, heads and cams along with a better breathing intake manifold(Bullitt or trick flow) you should be able to rev to 7k or even 7500rpms safely and make decent power too. I would suggest a better water pump and under drive pullies too. Might want to uncork the exhaust too with some mid or long tube headersm x-pipe and catback. Just add alittle boost for more fun now that the rods are stronger. __________________ 01' DHG Bullitt Mustang 89' and 93' SHO's: Faster then you think 94' STS Cadillac: Ghetto cruiser

September 9th, 2007, 05:58 PM	#7
ItalianBullitt754 Regular Join Date: Jul 2007 Location: Naples, Italy Posts: 143 iTrader: 0 reviews	Thats why I love SHO's They can do around 8,000 rpms stock if you chip it. I used to run mine up there all the time. __________________ 01' DHG Bullitt Mustang 89' and 93' SHO's: Faster then you think 94' STS Cadillac: Ghetto cruiser

September 9th, 2007, 04:10 PM	#4
shamntgmry Regular Join Date: Aug 2007 Posts: 107 iTrader: 0 reviews	Yeah see, if I built the motor with higher strength internals I would like to rev it a little bit higher, ah is 7000 RPMs out of the question safely? And yes like the other guy said if the motor stops making power at say 6000 I can fix that.

September 9th, 2007, 05:58 PM	#8
Badasstang281 Regular Join Date: Jan 2007 Location: Albuquerque, NM Posts: 385 iTrader: 0 reviews	or just buy a formula 1 car Engine you will be good for 18,000 rpm's __________________ BBK cai P&P 75mmtb P&P plenum BASSANI exhaust MAC x-pipe NO CAT"S ACCEL direct fire coils NGK iridium spark plugs lX7 Eibach pro-kit springs

September 9th, 2007, 06:22 PM	#10
Eagle2000GT MM Fanatic 2000 Mustang GT 12.73@111.36 Join Date: Aug 2007 Location: Shelbyville, IN Posts: 4,733 iTrader: 1 reviews	Why does stroking your motor make a difference? __________________ ProCharger P-1SC, 9 psi, STD 396/383; Uncorrected 388/375; SAE 383/370 Mods list in Garage.

September 9th, 2007, 06:33 PM	#11
ItalianBullitt754 Regular Join Date: Jul 2007 Location: Naples, Italy Posts: 143 iTrader: 0 reviews	Stroking puts more stress on your motor. Rods in particular and the crank. Nothing like throwing a rod or shearing a rod at 7k+rpms. Strokers don't usually like high RPMs. Stroking usually boosts low end torque. __________________ 01' DHG Bullitt Mustang 89' and 93' SHO's: Faster then you think 94' STS Cadillac: Ghetto cruiser

September 9th, 2007, 07:11 PM	#12
MustangMatt96GT Proud American 1996 Mustang GT 10.76 @ 122 with d/a of 8365 ft Join Date: Dec 2006 Location: Lakewood, CO Posts: 10,168 iTrader: 3 reviews	now if you bore it, you can wind it up high, just not when extending the stroke! __________________ RIP Travis Billings Special Thanks to: Andrews Racing Transmissions Baseline Suspensions Blown Small Block Ford with a hole in the block. 9.5 Dart Block 400 CI being saved for. Just because you can fuck a cactus doesn't mean you should. Never Lift Racecars

September 9th, 2007, 07:15 PM	#13
ItalianBullitt754 Regular Join Date: Jul 2007 Location: Naples, Italy Posts: 143 iTrader: 0 reviews	Hell Yeah! A bored out balanced high revving excellent breathing cammed GT. That would rock! __________________ 01' DHG Bullitt Mustang 89' and 93' SHO's: Faster then you think 94' STS Cadillac: Ghetto cruiser

September 9th, 2007, 08:03 PM	#14
camarosRgay Newbie Join Date: Sep 2007 Posts: 16 iTrader: 0 reviews	well with good studs, the bored stroker ought to be able to turn the same rpms, wouldnt you think?

September 9th, 2007, 08:52 PM	#17
camarosRgay Newbie Join Date: Sep 2007 Posts: 16 iTrader: 0 reviews	dut ho wwill that hld up strenght wise to boosted conditions - with a 600-800 rwhp potential?

September 9th, 2007, 08:55 PM	#19
Drgnracin72 I Post Entirely Way Too Much Join Date: Jan 2006 Location: somewhere in oklahoma Posts: 10,638 iTrader: 2 reviews	the stroker can and will turn rpms faster than that....... as long as you use quality parts buttoning it up and have good parts in it. mine is good to 8000 but stop making power at 6500 so it shifts at around 7000 __________________ RIP ΜΟΛΩΝ ΛΑΒΕ Political Correctness is a doctrine, fostered by a delusional, illogical, liberal minority and rabidly promoted by an unscrupulous mainstream media, which holds forth the proposition that it is entirely possible to pick up a turd by the clean end. One Big Ass Mistake America SHEEPDOGS

September 9th, 2007, 08:56 PM	#20
Drgnracin72 I Post Entirely Way Too Much Join Date: Jan 2006 Location: somewhere in oklahoma Posts: 10,638 iTrader: 2 reviews	also its going to take some monstrous heads and cams to turn the rpm its gonna take to make that kind of power all motor. ive seen them but its an expensive engine and not gonna be real streetable becasue of the high rpms that it will make pwoer at __________________ RIP ΜΟΛΩΝ ΛΑΒΕ Political Correctness is a doctrine, fostered by a delusional, illogical, liberal minority and rabidly promoted by an unscrupulous mainstream media, which holds forth the proposition that it is entirely possible to pick up a turd by the clean end. One Big Ass Mistake America SHEEPDOGS

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