Is 500rwhp streetable?
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TECH Enthusiast
Joined: Dec 2002
Posts: 698
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From: Fort Worth
Is 500rwhp streetable? I am in the process of blowing a decent amount of money. I am building a blown 5.7 to install in my 2002 truck. I am shooting for a least 500rwhp with my combo. I will have: 5.7 mildly ported heads, eagle rods, forged pistons, stock crank, 9.2? compression, 2002 LS6 cam, LS1 edit, heads and main studs, 42 or 50 lbs injectors, and an ATI running between 8 and 12 psi. I hope these items will do it. I am wondering will I be able to drive this everyday? Meaning will it last 50,000 miles, be comfortable to drive 450 miles to south Texas, and get more than 10 miles a gallon.
P.S. If you see any problems with my items please tell me.
P.S. If you see any problems with my items please tell me.
TECH Senior Member
Joined: Nov 2001
Posts: 11,603
Likes: 0
From: Chi-Town, IL
Re: Is 500rwhp streetable? That should be a good setup, get descent gas mileage, I don't know about if your running around on a lot of boost all the time though, but it will be a very quick truck... <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />
I plan to have more than 550rwhp in my car, and I drive my car every day its nice out.. <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" /> Except when it rains/snows, etc.. <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />
I plan to have more than 550rwhp in my car, and I drive my car every day its nice out.. <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" /> Except when it rains/snows, etc.. <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />
Re: Is 500rwhp streetable? 500rwhp streetable/practical, not realy..
anything over 300rwhp on the street is not needed.
But most of us here are unpractical.
on my set up i have the alum block with 6.0 truck heads forged rods / pistons set at 9.0:1 CR.
Still get 20mpg, unless i get on it. 512rwhp can break street tires loose at 100mph <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" /> so watch out.
I drive my TA over 400 miles a week. With FI it makes cars streetable.
Id go with the 6.0 truck heads instead of the 5.7s.
42lb SVO injectors should be enough for 500rwhp (its what i got).
anything over 300rwhp on the street is not needed.
But most of us here are unpractical.
on my set up i have the alum block with 6.0 truck heads forged rods / pistons set at 9.0:1 CR.
Still get 20mpg, unless i get on it. 512rwhp can break street tires loose at 100mph <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" /> so watch out.
I drive my TA over 400 miles a week. With FI it makes cars streetable.
Id go with the 6.0 truck heads instead of the 5.7s.
42lb SVO injectors should be enough for 500rwhp (its what i got).
Re: Is 500rwhp streetable? 500hp can be very streetable, it just depends on how the car is set up. To me a car starts to become less streetable when you have to climb over a roll cage and put together a 5 point harness all the time. An exhaust/blower that is to loud starts to take away from it's street manners too. Motorwise something with 500hp can be driven like a "normal car" unless the cam is to radial and you have to deal with the car surging at low RPMs. Your combo should be fine <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />
Tom
Tom
Re: Is 500rwhp streetable? Anything that (theoretically) produces over
1g of acceleration is wasted, pretty much.
Hard to get 100% weight transfer and a static
friction coefficient much over 1 (Velcro(tm)
aside).
3500lb*(tire radius(ft))/(rear end ratio)/(trans gear ratio) = engine usable torque limit*
* A/T may divide by STR depending on RPM
3500*1.1/3.23/3.06/1.8 = 216lb-ft to exceed
(1st gear, A/T, stock converter, torque mult)
- roast 'em from stop
3500*1.1/3.23/3.06 = 389lb-ft to exceed
(1st gear, A/T, stock converter) - roast 'em
from top of 1st
3500*1.1/3.23/1.63/1.8 = 406lb-ft to exceed
(2nd gear, AT, torque mult) - chirp second
3500*1.1/3.23/1.63 = 731lb-ft to exceed
(2nd gear, AT) - break loose at top of second
Go by torque, not HP. 500 lb-ft will make
first gear smoke but if you drive well,
will not lose adhesion in second. Unless
you jerk it loose. Above are based on a
static friction scenario, once you lose
grip you are into sliding friction and
coefficient drops to .2 - .5X (rough rule).
This is streetability in terms of putting
down what you're putting out.
Streetable in terms of idle, overheating,
and such, you're on your own.
1g of acceleration is wasted, pretty much.
Hard to get 100% weight transfer and a static
friction coefficient much over 1 (Velcro(tm)
aside).
3500lb*(tire radius(ft))/(rear end ratio)/(trans gear ratio) = engine usable torque limit*
* A/T may divide by STR depending on RPM
3500*1.1/3.23/3.06/1.8 = 216lb-ft to exceed
(1st gear, A/T, stock converter, torque mult)
- roast 'em from stop
3500*1.1/3.23/3.06 = 389lb-ft to exceed
(1st gear, A/T, stock converter) - roast 'em
from top of 1st
3500*1.1/3.23/1.63/1.8 = 406lb-ft to exceed
(2nd gear, AT, torque mult) - chirp second
3500*1.1/3.23/1.63 = 731lb-ft to exceed
(2nd gear, AT) - break loose at top of second
Go by torque, not HP. 500 lb-ft will make
first gear smoke but if you drive well,
will not lose adhesion in second. Unless
you jerk it loose. Above are based on a
static friction scenario, once you lose
grip you are into sliding friction and
coefficient drops to .2 - .5X (rough rule).
This is streetability in terms of putting
down what you're putting out.
Streetable in terms of idle, overheating,
and such, you're on your own.
