What is the most HP i can get from an LS1 engine w/o going forced induction?
06-17-2013, 02:32 PM
#1
What is the most HP i can get from an LS1 engine w/o going forced induction? I know it depends on the budget... but considering $$ was of no issue and i go all out heavily moding the engine with every mod out there for the LS1 except forced induction and NOS...what is the max HP the engine can produce??
I'm a new owner of an LS1 engine and i would like to know its potentials b4 i start with the mods.
I'm a new owner of an LS1 engine and i would like to know its potentials b4 i start with the mods.
Last edited by Freefallin; 06-17-2013 at 03:14 PM.
06-17-2013, 04:51 PM
#5
Wow! 500 rwhp?! Way more than i expected! Plz plz do tell how that is achieved?! What mods?! Even 450 rwhp would be awesome.
06-17-2013, 04:58 PM
#6
You can make 500 RWHP out of a stock cube engine.....they were doing that back in 2001 with head/cam kits.
BUT.....the cam is gonna be HUGE and not very good with the idle quality and daily drive ability. But some people love big cams, so.....
Just do a resleeved 454ci using an LS2 block that will last 10 years. You can make 650-700 RWHP with top of the line stuff and it will idle pretty smooth and be very very driver friendly.
My new 390ci that I just got installed last month made a little over 400 RWHP and that's with low compression pistons built for boost later on, and it idles great and drives great. And I'm using crappy LS1 heads and LS6 intake with a stock TB.
If I put some goods head and intake/TB on it might go 450-460 RWHP and still be nice and daily drive able with no issues.
But if you have the cash.....resleeved the LS2 block and stroke and bore it to 427ci or larger.....436ci is a great engine......and then you can make 500 RWHP EASY up to 700 RWHP.
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06-17-2013, 07:03 PM
#11
This is in the top 5 for the highest ever, and that is a stalled auto with a built rear.
Stock cube Ls1s have hit 530+Rwhp.
With a nice set of heads, a well specd cam, nice exhaust, and a FAST 102/.. You wouldn't have an issue hitting 475Rwhp even in an auto. Manual will near 500.
Of course dyno/tune could play a huge factor.
Stock cube Ls1s have hit 530+Rwhp.
With a nice set of heads, a well specd cam, nice exhaust, and a FAST 102/.. You wouldn't have an issue hitting 475Rwhp even in an auto. Manual will near 500.
Of course dyno/tune could play a huge factor.
06-17-2013, 08:17 PM
#14
500 horsepower to the rear wheels on a 346 is pretty hopeful. There is no way it will "drive like stock". You will need badazz heads, a stout cam, and all the bolt on goodies you can find. I honestly think the dyno chart posted ^^ here is off...662ftlbs or torque??? I wouldn't expect 500RWHP from that combo....especially with 243 heads. Does he have a ET?
450-475 RWHP is a more realistic and obtainable with H/C/I and bolt on car.
450-475 RWHP is a more realistic and obtainable with H/C/I and bolt on car.
06-17-2013, 08:26 PM
#15
500 horsepower to the rear wheels on a 346 is pretty hopeful. There is no way it will "drive like stock". You will need badazz heads, a stout cam, and all the bolt on goodies you can find. I honestly think the dyno chart posted ^^ here is off...662ftlbs or torque??? I wouldn't expect 500RWHP from that combo....especially with 243 heads. Does he have a ET?
450-475 RWHP is a more realistic and obtainable with H/C/I and bolt on car.
450-475 RWHP is a more realistic and obtainable with H/C/I and bolt on car.
06-17-2013, 08:33 PM
#16
500 horsepower to the rear wheels on a 346 is pretty hopeful. There is no way it will "drive like stock". You will need badazz heads, a stout cam, and all the bolt on goodies you can find. I honestly think the dyno chart posted ^^ here is off...662ftlbs or torque??? I wouldn't expect 500RWHP from that combo....especially with 243 heads. Does he have a ET?
450-475 RWHP is a more realistic and obtainable with H/C/I and bolt on car.
450-475 RWHP is a more realistic and obtainable with H/C/I and bolt on car.
And read the thread and it would explain the graph.
I'd put TEA 243s on my car before AFR 205s..
Last edited by lemons12; 06-17-2013 at 08:42 PM.
06-17-2013, 08:40 PM
#17
LG used to do 500rwhp with a G5X3... which is the same size as the EPS/TEA Combo posted above - 234/242 112. That's smaller than a MS4 or T-Rex, but still plenty big when it comes to overlap. And overlap is what makes power and kills streetability.
8 degrees of overlap is about the limit for true street manners (no bucking, surging, etc). Once you get above that, the tune plays a huge part, but there's only so much tuning you can do to remove a loss of vacuum in low speed situations. Once you start getting around 14-18 degrees of overlap (or more) is when you start to see the pretty big HP numbers in well-sorted combos.
Btw, overlap @ .050" is what I'm talking about and it's an easy formula: (Int + Exh)/2 - (2*LSA). So a 234/242 112 is (234+242)/2 - (2*112) = 14.
8 degrees of overlap is about the limit for true street manners (no bucking, surging, etc). Once you get above that, the tune plays a huge part, but there's only so much tuning you can do to remove a loss of vacuum in low speed situations. Once you start getting around 14-18 degrees of overlap (or more) is when you start to see the pretty big HP numbers in well-sorted combos.
Btw, overlap @ .050" is what I'm talking about and it's an easy formula: (Int + Exh)/2 - (2*LSA). So a 234/242 112 is (234+242)/2 - (2*112) = 14.
06-17-2013, 08:44 PM
#19
LG used to do 500rwhp with a G5X3... which is the same size as the EPS/TEA Combo posted above - 234/242 112. That's smaller than a MS4 or T-Rex, but still plenty big when it comes to overlap. And overlap is what makes power and kills streetability.
8 degrees of overlap is about the limit for true street manners (no bucking, surging, etc). Once you get above that, the tune plays a huge part, but there's only so much tuning you can do to remove a loss of vacuum in low speed situations. Once you start getting around 14-18 degrees of overlap (or more) is when you start to see the pretty big HP numbers in well-sorted combos.
Btw, overlap @ .050" is what I'm talking about and it's an easy formula: (Int + Exh)/2 - (2*LSA). So a 234/242 112 is (234+242)/2 - (2*112) = 14.
8 degrees of overlap is about the limit for true street manners (no bucking, surging, etc). Once you get above that, the tune plays a huge part, but there's only so much tuning you can do to remove a loss of vacuum in low speed situations. Once you start getting around 14-18 degrees of overlap (or more) is when you start to see the pretty big HP numbers in well-sorted combos.
Btw, overlap @ .050" is what I'm talking about and it's an easy formula: (Int + Exh)/2 - (2*LSA). So a 234/242 112 is (234+242)/2 - (2*112) = 14.
06-17-2013, 09:49 PM
#20
I can see close to 500....I'm running a 2.5" dual with mufflers...If I went open, UDP, a better tune, bigger cam...I guess I could be very close.