Stock 4.6 block HP rating
08-22-2010, 03:03 PM
#11
4th Gear Member
Join Date: Mar 2009
Location: NC
Posts: 1,909
My car was making 450 pulls and I was about to **** a brick when I found out. I had to buy a bigger pulley to pull those numbers down. I am still scared and I brought it down closer to 400.
What you need to take form all this is..... your car will eventually need a new motor w/ 465 rwhp. Weather its tomorrow, next month, or even next year, if you are lucky.
Are you the kind of person that like to risk it? Because at those levels it is a game.
What you need to take form all this is..... your car will eventually need a new motor w/ 465 rwhp. Weather its tomorrow, next month, or even next year, if you are lucky.
Are you the kind of person that like to risk it? Because at those levels it is a game.
08-22-2010, 08:07 PM
#12
5th Gear Member
Join Date: Aug 2007
Location:
Posts: 3,189
The guys in NMRA have proved both of these wrong, Brandon Alsept spins the stock cast crank to 9500RPM and Bill Putnam ran the stock 2V PI heads to 7000RPM shifts in capturing the stock 2V longblock plus cams record of 11.98@113MPH.
As for the OP original question yes the tuner is correct, 400RWHP is 99% safe, 450RWHP is 50/50 and 500 is probably around 10% safe. Its the stock tight piston ring gap that usually fails first with a boosted motor. If the ends butt up they will break the ringland on the piston.
As for the OP original question yes the tuner is correct, 400RWHP is 99% safe, 450RWHP is 50/50 and 500 is probably around 10% safe. Its the stock tight piston ring gap that usually fails first with a boosted motor. If the ends butt up they will break the ringland on the piston.
08-22-2010, 09:34 PM
#13
Underboss
Join Date: Jan 2006
Location: Helaware
Posts: 20,273
My car was making 450 pulls and I was about to **** a brick when I found out. I had to buy a bigger pulley to pull those numbers down. I am still scared and I brought it down closer to 400.
What you need to take form all this is..... your car will eventually need a new motor w/ 465 rwhp. Weather its tomorrow, next month, or even next year, if you are lucky.
Are you the kind of person that like to risk it? Because at those levels it is a game.
What you need to take form all this is..... your car will eventually need a new motor w/ 465 rwhp. Weather its tomorrow, next month, or even next year, if you are lucky.
Are you the kind of person that like to risk it? Because at those levels it is a game.
08-23-2010, 04:39 AM
#14
6th Gear Member
Join Date: Aug 2007
Location: MO/ Born and raised in Louisiana
Posts: 10,696
Op you are most def playing with fire bro. Once I install my V1, 410 RWHP is as high as I will go and that's still pushing it. I would listen to these guys.... they helped me out alot with my setup. Good luck!
08-26-2010, 03:26 PM
#16
2nd Gear Member
Thread Starter
Join Date: Jan 2005
Location: Hampton, Va
Posts: 325
I def get the picture....I guess now I just have to decide on what to do. I doo like the MMR600 and the MMR900 blocks on lethalperformance. Thats probably the best way to go instead of buying forged internals for my current block. Thanks for all of your help!!!! As I read all of the comments, I could feel my butt puckering with fear. You guys are awesome!
08-26-2010, 03:36 PM
#17
Underboss
Join Date: Jan 2006
Location: Helaware
Posts: 20,273
08-26-2010, 06:08 PM
#19
4th Gear Member
Join Date: Jul 2008
Location: NC
Posts: 1,956
Cheaper if you go directly through MMR http://www.modularmustangracing.com/
08-26-2010, 07:23 PM
#20
5th Gear Member
Join Date: Nov 2006
Location: MA
Posts: 2,402