Iron block HP limit with forged internals? 1500+ HP truck
12-04-2018, 09:49 PM
#25
The last episode of Engine masters they made 1500 horse with a stock bottom end 4 bolt block. Obviously this would be way different in a car but it can be done. Link to HotRod article.
12-04-2018, 10:57 PM
#26
Restricted User
Smaller bore will keep the heads down. That's why you see people pushing water far more often with 6.0s than 5.3s. 4.8 is the ideal candidate for keeping heads down.
12-04-2018, 11:05 PM
#27
I'd like to see the budget, I wouldn't waste the money on a stock block at that level. I know what I have in my engine and the only thing stock is the block and front/rear/valley cover. It's not cheap and I still have to get a trans and rear built to handle the power, I was thinking 4l80e but to reliably hold the power I could cut the cost in half by going with a glide. To build a complete driveline that will make and hold 1500hp reliably you better have 15k budget to just get started. Making 500-700hp reliably isn't that hard or expensive but when you start talking reliable triple digit power it's gets expensive real fast. Just the fuel system needed for that kind of power starts at more than some guys have in their engines lol
Just off the top of my head and being very conservative parts wise.
$2,300 Crankshaft
$1,400 Rods
$900 Pistons
$2,800 Heads
$2,000 for block and machining.
yes it can be done cheaper but at the cost of reliability.
Just off the top of my head and being very conservative parts wise.
$2,300 Crankshaft
$1,400 Rods
$900 Pistons
$2,800 Heads
$2,000 for block and machining.
yes it can be done cheaper but at the cost of reliability.
12-05-2018, 09:35 AM
#28
I'd like to see the budget, I wouldn't waste the money on a stock block at that level. I know what I have in my engine and the only thing stock is the block and front/rear/valley cover. It's not cheap and I still have to get a trans and rear built to handle the power, I was thinking 4l80e but to reliably hold the power I could cut the cost in half by going with a glide. To build a complete driveline that will make and hold 1500hp reliably you better have 15k budget to just get started. Making 500-700hp reliably isn't that hard or expensive but when you start talking reliable triple digit power it's gets expensive real fast. Just the fuel system needed for that kind of power starts at more than some guys have in their engines lol
Just off the top of my head and being very conservative parts wise.
$2,300 Crankshaft
$1,400 Rods
$900 Pistons
$2,800 Heads
$2,000 for block and machining.
yes it can be done cheaper but at the cost of reliability.
Just off the top of my head and being very conservative parts wise.
$2,300 Crankshaft
$1,400 Rods
$900 Pistons
$2,800 Heads
$2,000 for block and machining.
yes it can be done cheaper but at the cost of reliability.
As far as fuel system get a Aeromotive 5gpm for $1200 and a set of Bosch 210 injectors for $500 and your covered to well past 1500hp.
12-05-2018, 11:16 AM
#30
Restricted User
1500 PSI cylinder pressure on a 4" bore (12.56 square inches) = 18840 lbs of force pushing up on the cylinder head.
1500 PSI cylinder pressure on a 3.78" bore (11.21 square inches) = 16824 lbs of force pushing up on the cylinder head.
Couple that with the smaller bore gaskets on the 4.8/5.3 allowing for more deck sealing surface, and you have a much better recipe for keeping the heads down.
12-05-2018, 01:40 PM
#33
I have no idea what you are getting at
The iron 6.0 would be my last choice of an OEM block to use unless you at least half fill it
They have very thin cylinders between the bores... Fact
Late aluminum 5.3 with siamese bores is the OEM block of choice I'd use for the best foundatuon
The iron 6.0 would be my last choice of an OEM block to use unless you at least half fill it
They have very thin cylinders between the bores... Fact
Late aluminum 5.3 with siamese bores is the OEM block of choice I'd use for the best foundatuon
12-05-2018, 01:52 PM
#34
I have no idea what you are getting at
The iron 6.0 would be my last choice of an OEM block to use unless you at least half fill it
They have very thin cylinders between the bores... Fact
Late aluminum 5.3 with siamese bores is the OEM block of choice I'd use for the best foundatuon
The iron 6.0 would be my last choice of an OEM block to use unless you at least half fill it
They have very thin cylinders between the bores... Fact
Late aluminum 5.3 with siamese bores is the OEM block of choice I'd use for the best foundatuon
12-05-2018, 02:11 PM
#39
Its fatigue over time. Many of those are not much if at all over 1k
If you knew how many cracked 6.0s are out there you would **** your pants
It is simply a foolish move to use one when there are better/stronger blocks available for less money.... And lighter
If you knew how many cracked 6.0s are out there you would **** your pants
It is simply a foolish move to use one when there are better/stronger blocks available for less money.... And lighter
12-05-2018, 02:21 PM
#40
Its not like I only use iron 6.0's, have plenty of other iron and aluminum engines as well so I'm not disagreeing with you entirely. Just stating there's no magical horsepower limit where they all instantly blow up.