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I currently have a max effort 2019 z06 with the Kong race port on the stock blower. I've seen and heard that the stock short block can handle about 950 before issues start to arise with the thrust bearing. I have 30% fic gen 2's, stock HPFP, JMS voltage booster on the factory zr1 fuel pump, and a DSX aux low side. What would I need to do pulley combo, fuel system, and tb wise to hit that number?
Also interested in this as I plan on going the same route soon. From what iv gathered the main issue may be the thrust bearing. Supposedly once they go over the 900+ whp mark they start becoming problematic. Obviously a good tune goes a long way.
I currently have a max effort 2019 z06 with the Kong race port on the stock blower. I've seen and heard that the stock short block can handle about 950 before issues start to arise with the thrust bearing. I have 30% fic gen 2's, stock HPFP, JMS voltage booster on the factory zr1 fuel pump, and a DSX aux low side. What would I need to do pulley combo, fuel system, and tb wise to hit that number?
Pulley wise you will need something in the 18k blower rpm range "9.45" lower 90mm upper" to hit 900whp. You will also need a cam to make that power for airflow and fueling. You will also need a LPE HPFP or the new Katch "Goliath" pump that is coming out this spring. With +30 injectors you will be limited to around E30 making that kind of power. Should really upgrade to the XDI +70's which also just came out.
Mods needed for 900whp on E50+
-+38% Fuel Lobe
-Aftermarket HPFP LPE or Goliath
-XDI +70 injectors
Pulley wise you will need something in the 18k blower rpm range "9.45" lower 90mm upper" to hit 900whp. You will also need a cam to make that power for airflow and fueling. You will also need a LPE HPFP or the new Katch "Goliath" pump that is coming out this spring. With +30 injectors you will be limited to around E30 making that kind of power. Should really upgrade to the XDI +70's which also just came out.
Mods needed for 900whp on E50+
-+38% Fuel Lobe
-Aftermarket HPFP LPE or Goliath
-XDI +70 injectors
Pulley wise you will need something in the 18k blower rpm range "9.45" lower 90mm upper" to hit 900whp. You will also need a cam to make that power for airflow and fueling. You will also need a LPE HPFP or the new Katch "Goliath" pump that is coming out this spring. With +30 injectors you will be limited to around E30 making that kind of power. Should really upgrade to the XDI +70's which also just came out.
Mods needed for 900whp on E50+
-+38% Fuel Lobe
-Aftermarket HPFP LPE or Goliath
-XDI +70 injectors
Thanks bud, I have the innovators west lower which is a 9.5 18% over. Also have a cam with the 32% fuel lobe. Forgot to mention I have two 15 mm meth nozzles. So looks like a LPE big bore HPFP, maggy and 90mm pulley.
That changes the game - meth that is. In that case 30% will work. I have the same setup you are referring to but with 30% injectors and 9.45 lower. Make 950whp on E60. Have had it up to E70 with room in injector still.
Originally Posted by samwint77
Thanks bud, I have the innovators west lower which is a 9.5 18% over. Also have a cam with the 32% fuel lobe. Forgot to mention I have two 15 mm meth nozzles. So looks like a LPE big bore HPFP, maggy and 90mm pulley.
That changes the game - meth that is. In that case 30% will work. I have the same setup you are referring to but with 30% injectors and 9.45 lower. Make 950whp on E60. Have had it up to E70 with room in injector still.
My original LT4 gave up the ghost after about 6 months at that power level. It seized up big time. It was so bad that it ruined the block and I had to get another block for my current build, LME engine.
My original LT4 gave up the ghost after about 6 months at that power level. It seized up big time. It was so bad that it ruined the block and I had to get another block for my current build, LME engine.
How do you mean "Seized up". Do you mean rod got in the way of the crank after it detached from a piston?
My original LT4 gave up the ghost after about 6 months at that power level. It seized up big time. It was so bad that it ruined the block and I had to get another block for my current build, LME engine.
Imo rwhp isn't what kills these motors, its the torque. Remember horsepower is just a measure of torque. (HP=torque*RPM/5250). I'm not saying that this is what killed this motor in any way shape or form, but if trying to push for high numbers on the stock bottom end, I would personally look at torque more than I would hp. Just my own personal opinion.
Well I guess this thread is null and void now. Spun a bearing last week. Now what do I do...… I think I'll just bite the bullet and go LTX block, 427, 1400hp build.
Kind of the name of the game sadly. Im going to turn my SBE more, but I'm anticipating it won't live forever and when it goes out, I'm going to go with a billet block that will be virtually indestructible. Out of curiosity was it a rod bearing, main bearing? Also what torque/hp did you end up making when it did this and on what fuel? Just curious if you don't mind sharing
04-02-2024, 02:11 PM
950 whp with maggy and factory rotating assembly?
