View Full Version : Forged Internals Question
DTRMiguel
02-25-2009, 06:41 AM
Hey guys I know the forged internals will hold up a lot better than stock internals and make it a 5.0? Will this help horsepower wise? If so how much on average? I was looking at the modmax stroker kit! :help:
O's Fan Rich
02-25-2009, 06:48 AM
and CAN make it a 5.0...... if you get the stroker kit.
HP wise.... a fresh engine will help with the hp, watch your compression ratios...some kits lower the ratio well below 10:1, but I'm not sure if just adding the forged stuff will give you an increase.
But with the tougher lower end you can put a supercharger on and feel better....
CKMustangCobra
02-25-2009, 07:37 AM
Adding cubes will increase HP a bit.... but it all depends on the compression ratio and what intake you will be using and so forth.
Everything the same... just adding cubes to displace 5.0L... I would expect around another 50hp.
Go forged 5.0L, get a 9.5:1 ratio, add a positive displacement blower.
Rule of thumb. Never purchase a rotating assembly unless you have checked with your engine builder and he has reviewed the block and it's associated specifications. Not having the correct piston fit could lead to a major headache quickly.
DTRMiguel
02-25-2009, 08:56 AM
So basically it would be easier to buy a cobra shortblock?
Vortech347
02-25-2009, 09:18 AM
I don't think you'd pick up 50hp by only adding 20-22 cubes. I'd expect 25-30ish.
The main gain is lower RPM torque. I've built 3 pushrod strokers and worked on a few mod strokers.
ImpalaSlayer
02-25-2009, 10:11 AM
So basically it would be easier to buy a cobra shortblock?
id say so.
O's Fan Rich
02-25-2009, 10:20 AM
id say so.
You did sell your's , right Dave?
ImpalaSlayer
02-25-2009, 10:21 AM
You did sell your's , right Dave?
i am waiting to hear from Doom. its a long story with some complications that. he tells me hes buying just waiting on Chris.
O's Fan Rich
02-25-2009, 10:23 AM
i am waiting to hear from Doom. its a long story with some complications that. he tells me hes buying just waiting on Chris.
Oh.... I see....Waiting on Doom again....
ImpalaSlayer
02-25-2009, 10:24 AM
Oh.... I see....Waiting on Doom again....
not really, i cant really go into it.
O's Fan Rich
02-25-2009, 10:47 AM
not really, i cant really go into it.
Ok... FINE!!!!
Just let me know if I can help.
DTRMiguel
02-25-2009, 11:02 AM
I don't think you'd pick up 50hp by only adding 20-22 cubes. I'd expect 25-30ish.
The main gain is lower RPM torque. I've built 3 pushrod strokers and worked on a few mod strokers.
I dont have to get my motor bored do i in order to make a forged rotating assembly work do i?
Joe Walsh
02-25-2009, 11:12 AM
Not necessarily...but most engine builders will give the cylinders a clean-up hone so that the new piston rings will wear in properly.
The engine builder will determine how much 'clean-up' honing is needed and select the correct diameter piston to match the final bore diameter.
Buy a Trilogy and call it a day.
You are gonna spend all this money for a stroker, when you can spend the same money on a blower.
Drive the snot out of the car with the blower and save up for engine mods while doing so.
This is a good deal:
http://www.modularfords.com/forums/showthread.php?t=126791
Ill take the new built motor out of my Mach 1 for $5000
Ported Heads, GT Cams Livernois Valve Springs
4.6L Cobra Crank, Manley Rods, Diamond Pistons
Powdercoated timing cover
Runs flawlessly.
:D
DTRMiguel
02-25-2009, 12:11 PM
Ill take the new built motor out of my Mach 1 for $5000
Ported Heads, GT Cams Livernois Valve Springs
4.6L Cobra Crank, Manley Rods, Diamond Pistons
Powdercoated timing cover
Runs flawlessly.
:D
$1000 more could buy a trilogy lol i didnt wonna spend 5k on a motor. If it cost more to do the forged internals i would have bought a cobra block instead. Thanks though
$1000 more could buy a trilogy lol i didnt wonna spend 5k on a motor. If it cost more to do the forged internals i would have bought a cobra block instead. Thanks though
Sounds like you want something done quick, but reliable.
I just happen to have a used Aluminum block and great cast crank.
Get some good pistons for $600, have a shop fit the pistons up/do the machine work etc. Buy some Manley rods, slap on your heads and go.
The cast crank will be good to 600+ rwhp or more.
O's Fan Rich
02-25-2009, 12:24 PM
The cast crank will be good to 600+ rwhp or more.
I've heard that. Don't trust it, but I've heard that.
And.... I've yet to hear of a crank snap at that power level... so.....
Circle gets the square.
http://www.modularfords.com/forums/showthread.php?t=129160
RR|Suki
02-26-2009, 08:24 AM
If you get a cobra shortblock and install in your car you are gonna end up with less power if you don't put a blower on too. Unless you put the motor together yourself and RR it yourself you'll be hard pressed to get a built motor for $5,000 after it's all said and done.
Vortech347
02-26-2009, 03:06 PM
Not necessarily...but most engine builders will give the cylinders a clean-up hone so that the new piston rings will wear in properly.
The engine builder will determine how much 'clean-up' honing is needed and select the correct diameter piston to match the final bore diameter.
Bingo :beer:
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