How much HP can a stock shortblock handle?
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From: St. Charles, MO
How much HP can a stock shortblock handle? Planning to highly modify one of my two cars. 2001 z28(a4) or 2002 SS(m6) can't decide. Anyway how much horsepower can I make before I have to upgrade the shortblock?
Re: How much HP can a stock shortblock handle? I've been pushing mine hard for awhile
24k miles w/ the turbos on, 38k total
numbers in the sig.
made 584RWHP/660RWTQ on 13psi last week <img src="gr_grin.gif" border="0">
<img src="graemlins/gr_hail.gif" border="0" alt="[hail]" />
24k miles w/ the turbos on, 38k total
numbers in the sig.
made 584RWHP/660RWTQ on 13psi last week <img src="gr_grin.gif" border="0">
<img src="graemlins/gr_hail.gif" border="0" alt="[hail]" />
Re: How much HP can a stock shortblock handle? Stock crank is good to over 700 hp, but the rods will probably give out north of 600 hp. The stock pistons like turbos better than nitrous. Good for 600-700 hp on turbo notor, not as much on nitrous.
__________________
2013 Corvette Grand Sport A6 LME forged 416, Greg Good ported TFS 255 LS3 heads, 222/242 .629"/.604" 121LSA Pat G blower cam, ARH 1 7/8" headers, ESC Novi 1500 Supercharger w/8 rib direct drive conversion, 747rwhp/709rwtq on 93 octane, 801rwhp/735rwtq on race fuel, 10.1 @ 147.25mph 1/4 mile, 174.7mph Half Mile.
2016 Corvette Z51 M7 Magnuson Heartbeat 2300 supercharger, TSP LT headers, Pat G tuned, 667rwhp, 662rwtq, 191mph TX Mile.
2009.5 Pontiac G8 GT 6.0L, A6, AFR 230v2 heads. 506rwhp/442rwtq. 11.413 @ 121.29mph 1/4 mile, 168.7mph TX Mile
2000 Pewter Ram Air Trans Am M6 heads/cam 508 rwhp/445 rwtq SAE, 183.092 TX Mile
2022 Cadillac Escalade 6.2L A10 S&B CAI, Corsa catback.
2023 Corvette 3LT Z51 soon to be modified.
Custom LSX tuning in person or via email press here.
2013 Corvette Grand Sport A6 LME forged 416, Greg Good ported TFS 255 LS3 heads, 222/242 .629"/.604" 121LSA Pat G blower cam, ARH 1 7/8" headers, ESC Novi 1500 Supercharger w/8 rib direct drive conversion, 747rwhp/709rwtq on 93 octane, 801rwhp/735rwtq on race fuel, 10.1 @ 147.25mph 1/4 mile, 174.7mph Half Mile.
2016 Corvette Z51 M7 Magnuson Heartbeat 2300 supercharger, TSP LT headers, Pat G tuned, 667rwhp, 662rwtq, 191mph TX Mile.
2009.5 Pontiac G8 GT 6.0L, A6, AFR 230v2 heads. 506rwhp/442rwtq. 11.413 @ 121.29mph 1/4 mile, 168.7mph TX Mile
2000 Pewter Ram Air Trans Am M6 heads/cam 508 rwhp/445 rwtq SAE, 183.092 TX Mile
2022 Cadillac Escalade 6.2L A10 S&B CAI, Corsa catback.
2023 Corvette 3LT Z51 soon to be modified.
Custom LSX tuning in person or via email press here.
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Thread Starter
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From: St. Charles, MO
Re: How much HP can a stock shortblock handle? So the entire shortblock should be good to 600hp. If I use n2o it will probally only be a 150 shot. Do I still need to upgrade the pistons?
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On The Tree
Joined: Nov 2001
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From: Dallas, TX
Re: How much HP can a stock shortblock handle? [quote]Originally posted by DOC OTIS:
<strong>So the entire shortblock should be good to 600hp. If I use n2o it will probally only be a 150 shot. Do I still need to upgrade the pistons?</strong><hr></blockquote>
Nirous puts a considerable amount of stress on the motor, for one, it is such a sudden impact of power. Dont forget that Torque increases are HUGE. Especially at low RPM where the motor is not wound up. Nitrous works much better at higher RPMS with respect to stress on the motor.
<strong>So the entire shortblock should be good to 600hp. If I use n2o it will probally only be a 150 shot. Do I still need to upgrade the pistons?</strong><hr></blockquote>
Nirous puts a considerable amount of stress on the motor, for one, it is such a sudden impact of power. Dont forget that Torque increases are HUGE. Especially at low RPM where the motor is not wound up. Nitrous works much better at higher RPMS with respect to stress on the motor.
On The Tree
Joined: Nov 2001
Posts: 191
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From: Dallas, TX
Re: How much HP can a stock shortblock handle? Also, to add, its extremly important to consider the geometry of the motor.
Simply attaching a HP number to the motor is not enough. We need to take into consideration stroke relative to bore.
In essence, and short stroke over a long stroke will achieve much more reliable power than a longer stroke.
For example:
A shorter stroked motor making say "700 HP", would have equal or less stress than say a longer stroked motor making "600 HP".
Simply attaching a HP number to the motor is not enough. We need to take into consideration stroke relative to bore.
In essence, and short stroke over a long stroke will achieve much more reliable power than a longer stroke.
For example:
A shorter stroked motor making say "700 HP", would have equal or less stress than say a longer stroked motor making "600 HP".
