5.7 vortec vs. 5.7 hemi

[Outlawz2004]

Originally Posted by the_husk

You crack me up kid. What don't you understand about experience, hemi's are SLOW out of the hole, and cant keep up with the midrange charge of the vortec, but do start to pull them in slowly after the 1/8th mile.

LOL, kid huh. I wish. We are all talking from experience, yours is just different than mine. As far as that video, I have basically the same mods as the 5.7 but I have a 4.8 with 3.42s and run a 15.1 at full street weight, and that was with the tahoe(heavy) 20s on it. All I have is headers,intake,exhaust,and a tune.

[Outlawz2004]

Originally Posted by the_husk

WAIT A SECOND! You're telling me that what I know form experience isnt true? Wow, you need to experience the TRUTH. And as far as calling me a liar, that just pisses me off.

No need to get pissed off,I have owned a few 350s, I know what they can and cant do.

[HyperFox]

Heh.. If he starts to talk smack, just remember you'll be laughing your @$$ off when it comes time for him to replace his platinum tipped spark plugs..

All 16 of them.

[Pewter-Q]

Originally Posted by Outlawz2004

LOL, kid huh. I wish. We are all talking from experience, yours is just different than mine. As far as that video, I have basically the same mods as the 5.7 but I have a 4.8 with 3.42s and run a 15.1 at full street weight, and that was with the tahoe(heavy) 20s on it. All I have is headers,intake,exhaust,and a tune.

Thank you! The Gen III motors are something special. They are not "just a truck motor." They are essentially iron block 'vette motors. What was the 350's design shared with in 1998? It was a truck motor, and it did a great job at it. Yes it will pull a trailer better than a 5.3, but from a pure performance standpoint, the 5.3 is a MUCH better base. It is true, that in stock un-tuned form, a 5.7 Vortec vs. a 5.3 Vortec, all else equal, would be a very close race. But if you were to modify both motors with a tune, LT's, a good exhaust, and a decent air intake system, the 5.3 would win. Pure and simple. Then if you were to add better fueling and a fairly big cam in both, the 5.3 would really shine. The 5.7, however, would be reaching the upper limits of it's stock intake and ignition configuration.

I've raced plenty of stock and modified 5.7's. From a '98 ECSB Z71 with 48,000 miles and the same size tires as mine, to a completely stock '97 ECSB 2wd with low miles, all the way to a '91 RCSB 2wd with a few mild mods. I've beaten every single one of them with 285's and a turn down shortly after the stock cats with 140,000 miles. Yes, they got about a truck length out by 35mph but I reeled them back in easily by 50 and continued to pass them until the speed limiter after which time I was 2-3 lengths ahead. Just log onto Performance Trucks and tell me the ratio of 5.7/5.3 owners. That should give you a general idea which is more responsive to mods in near stock form.


The reality is that though it has been near 10 years since these motors were put to rest, trucks are still trucks, not sports cars. That's why you don't see some magical performance increase through the years. It's just new technology mixed in with a proven formula. Chevy's engineers didn't sit around a table in 1998 and think: "The 5.7 is a good motor, let's make the next one worse." There's a reason our great trucks have progressed to where they are...



Sorry to stick my nose in here, but I just couldn't help it. My intentions aren't intended to make anyone want to bicker frivolously with me. They are purely here as stated fact from my personal experience and research for your personal information and understanding. Also, remember that no matter how much fighting you guys do, no one is going to change anyone else's mind. We all have preferences and believe different things and that's why I love this great country.

[tex2500]

Originally Posted by Fast305

In fact I was test driving one Quad Cab Short Bed 1500 2wd and got waxed by a Cherokee with a 4.0 I6.

this is a bit off topic but I just figure I'll inteject here, that 4.0 i6 is a monster of a motor especially given the very light weight of a cherokee (I think somewhere around 3000lbs dry). The manual transmissions in those things, the Aisin AX15, is geared more like a sports car transmission and I am pretty sure they come stock with 4.11 gears in the axles.
The newest renditions of the 4.0 before it got dropped in favor of the liberty V6 made nearly 210hp and a lot of torque, I dont want to get called on facts here but it was something like 275 ft lbs. Thats a lot again considering the weight. Having driven a 4.0 wrangler for 4 years, I would NEVER race one in my truck now. When I still had the wrangler, I would walk all over my Dad in his BMW 323i from a dig or even a 10mph roll, easy. If you want to see the potential of that nasty little i6 go on over to HESCO performance and check their stuff out.
Sorry that was way off topic, but you got schooled by an i6 cherokee because that motor is a brawler.

[AlpineTahoeSS]

Why is everyone over looking that my 10 year old 4dr tahoe heavy ass suv was one tenth slower than a 2007 ram crew cab hemi with almost same mods. The ram is rated at 345 from the factory is it not and isnt my tahoe rated at 255 hp? I am by no means fast but I have him out of the hole and I have him all the way up the the 1000ft mark. My time 16.32 and his time 16.29 I think I did very well considering the diffrence in suv vs. truck.

[Pewter-Q]

Originally Posted by AlpineTahoeSS

Why is everyone over looking that my 10 year old 4dr tahoe heavy ass suv was one tenth slower than a 2007 ram crew cab hemi with almost same mods. The ram is rated at 345 from the factory is it not and isnt my tahoe rated at 255 hp? I am by no means fast but I have him out of the hole and I have him all the way up the the 1000ft mark. My time 16.32 and his time 16.29 I think I did very well considering the diffrence in suv vs. truck.

You're actually outweighed by the Ram believe it or not. And by about 400lbs. You say he had a cam, headers, a good tune, and some tranny work? You were able to confirm all of this at the track?

Either way, it was a close race as it should have been. You make up for in weight what he has over you in power.

[smokinsilverado]

with all things being equal on stock engines and same setup single cab ext cab or crew cab the hemi is going to be the more consisent winner. you may have the hemi for the first 1000 ft or whatever but that probably has more to do with reaction time at the tree. if you beat him there by 3 tenths and ends up beating you by one or two tenths then the hemi is the faster truck.. basically one race isn't the way to get an accurate measure your going to have to do multiple races you will win some and lose some but in the end if you lose by just a tenth then you still lose. the better race would be a 5.7 versus a 5.9 as they have similar stock performance and the hemi is better suited to go against the 5.3 or the 6.0. I am definitely a believer that GM makes the best all around small block mainly because they are receptive to mods but I do know that my durango with the 5.9 would hold its own against a tahoe with the 5.7 and my liberty with the 3.7 v6 would easily beat the tahoe (mainly because of power to weight) but in the end it has less to do with the vehicle and more to do with the driver ie: see John Force

[Outlawz2004]

He posted a video of possibly the slowest dodge ram hemi on the net.LOL.Dont fool yourself into thinking you have the baddest truck on the road because it has a 350. Check out youtube and see if the hemis are all slow. And a 4.0L jeep is damn quick, my dad had one with some mods and it would beat this guy with an s10and a 350 swap everytime. Add a supercharger to a 350 and go 14s, add a supercharger to a 5.3 and go 11s.

[the_husk]

Originally Posted by Outlawz2004

He posted a video of possibly the slowest dodge ram hemi on the net.LOL.Dont fool yourself into thinking you have the baddest truck on the road because it has a 350. Check out youtube and see if the hemis are all slow. And a 4.0L jeep is damn quick, my dad had one with some mods and it would beat this guy with an s10and a 350 swap everytime. Add a supercharger to a 350 and go 14s, add a supercharger to a 5.3 and go 11s.

I must say we had a good little debate last night!

If you add a supercharger to a 350, it shouldnt still be in the 14's, as cam only will go into the low 14's in some cases.

[Outlawz2004]

Originally Posted by the_husk

Wow, stop dissing the 5.7. You're just jealous than an engine that is 5-10 yrs older than yours, and less cubic inches can produce more torque and lower in the rpm band, and carry it to redline along with great power. OH and that it can wax your 6.0/hemi/ and 5.9.

Oh, and along with videos, there are lots of them out there than in a truck vs. truck pulloff, the 5.7 wipes the ground with the 6.0.

END OF THREAD.

Well, here are videos of someone named husk from Kansas. If this is your truck, you arent beating much with this slow a$$ thing. LOL. No offense intended.
http://www.youtube.com/watch?v=i74Zw...eature=related
http://www.youtube.com/watch?v=Vh1As...eature=related
Nice boots, and was that a fart in the beginning.Real nice.At least the truck sounds good, thats one thing you can say for the 350.
http://www.youtube.com/watch?v=imfcRUP54A4

[Fast305]

Originally Posted by Outlawz2004

Add a supercharger to a 350 and go 14s, add a supercharger to a 5.3 and go 11s.

I am ROFL here. I put a Weiand 142 supercharger on a STOCK TBI 350 it was stock down to the factory exhaust manifolds and wrapped in my fullsize van. It ran 14.4s @ 95 mph ALL night long with an otherwise stock TBI 350 and STOCK 4L60E behind it. 3.08 gears mind you too. I a RCSB with proper gearing and some engine mods, I have NO problem seeing it run MUCH quicker.

[Outlawz2004]

Originally Posted by Fast305

I am ROFL here. I put a Weiand 142 supercharger on a STOCK TBI 350 it was stock down to the factory exhaust manifolds and wrapped in my fullsize van. It ran 14.4s @ 95 mph ALL night long with an otherwise stock TBI 350 and STOCK 4L60E behind it. 3.08 gears mind you too. I a RCSB with proper gearing and some engine mods, I have NO problem seeing it run MUCH quicker.

Exactly, 14s, just as I stated. And I am pretty much tired of hearing about these vans to tell you the truth.LOL.

[Fast305]

Originally Posted by Outlawz2004

Exactly, 14s, just as I stated. And I am pretty much tired of hearing about these vans to tell you the truth.LOL.

Nothing wrong with a van. Its essentially the same chassis, motor, driveline as these trucks, just a bit heavier. Guess what you are talking about, a FREAKING pickup, I stated that the van runs low 14s, if you were smart you would run the numbers and figure out how that same engine would run when pulled out of a 5,700 lbs van and put in a 4,000 lbs or less RCSB truck. Much lower than 14s, I am afraid and that was a stock cam, stock head, stock exhaust swirly head motor on 5 psi of boost.

[Outlawz2004]

Post a time slip of that please. Lets see the time slip or video of the supercharged van running a 14.4.
And as for the videos I posted with the husk truck, where is all that massive torque and speed you talk of.LOL.

[Outlawz2004]

Originally Posted by the_husk

You crack me up kid. What don't you understand about experience, hemi's are SLOW out of the hole, and cant keep up with the midrange charge of the vortec, but do start to pull them in slowly after the 1/8th mile.

Is this the hard midrange charge you speak of, LOL
http://www.youtube.com/watch?v=i74Zw...eature=related

[the_husk]

As a response to your comments about my videos. Was not full throttle for one thing. If I was, it would go to 5800 rpms. Trust me, its a LOT faster than that. Low 15's.

[Outlawz2004]

Originally Posted by the_husk

As a response to your comments about my videos. Was not full throttle for one thing. If I was, it would go to 5800 rpms. Trust me, its a LOT faster than that. Low 15's.

Well, I will just wait right here while you post those videos of the full throttle run and the low 15 second time slip. I'll be waiting.
Oh, and in the video you say this is 40 to 90 full throttle. So, are we to believe you now or you then in the video?

[the_husk]

Oh, and about the whole fart thing... I was just trying to get a better grip on it!

[the_husk]

I'll work on a new vid, but I'm getting ready to leave for KC here in a few, so it would probably have to be tomorrow or something.

As for the 1/4 mile, it was on a loaded dyno, wasn't actually at the track.