5.7 vortec vs. 5.7 hemi

[Outlawz2004]

I'm sure we will see it just like the timeslip someone else was suppossed to post of a 5.7 beating a 5.3 at the track. Months later, still no time slip.

[Outlawz2004]

Originally Posted by 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.

Dyno sheet works for me.

[the_husk]

Outlaw, what's your email as I'll send you proof. I don't know how to post pics on here.

[Hatfieco]

The husk is gettin mighty testy here... Wonder if he'd smoke out his ears if I said my 7.4 would make his 5.7 my bitch and Im on 315s....

[Pewter-Q]

Originally Posted by Hatfieco

The husk is gettin mighty testy here... Wonder if he'd smoke out his ears if I said my 7.4 would make his 5.7 my bitch and Im on 315s....

I don't know, that hard mid range charge may get ya!

[Outlawz2004]

Pm set husk. And you do know even a loaded dyno wont account for vehicle weight and wind risistance thus giving you a false reading. Dont get your hopes up unless you take it to the track. Waiting for the email, but wont be home until this afternoon so I will get back to you then.

[Outlawz2004]

Originally Posted by lionel

I don't know, that hard mid range charge may get ya!

[the_husk]

Email sent.

[dsponder]

heres what you do and he probably wont think about it but put your truck in 4wd then step on the brake all the way then give it gas till around 2000rpms or so then when its time to go floor it while letting off the brake you will get a nice jump.

[AlpineTahoeSS]

For everyone that said it was one race against the hemi, it was not one race it was a test and tune night at the track and it was a close buddy with the hemi so I know what work is done to it and I know how much crap he talks. We made three runs against each other...All three of the slips were almost identical. My 16.3 and his 16.29...my 16.323 his 16.31 and the third and final time slip of 16.31 to his 16.29...I had him every single time to the 1000 foot mark. My speed at the 1/4 mile was 83.01 MPH his speed was 84 MPH. One mile an hour difference and a tenth of a second quicker. YES he is faster but by only a tenth of a second. 2007 Dodge Ram Hemi crew cab curb weight is 5784 lb. and my 98 Tahoe curb weight is 5500 lb. Isnt the hemi rated at 345HP and isnt my 5.7 only rated at 255HP? Just goes to show that the hemi isnt everything everyone says it is. Ill keep talking my real world 1/4 mile experience with my 5.7 vs 5.7 hemi so doubt all you want.

[99bluetahoe]

Originally Posted by 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.

Why don't you believe his van can run 14.4 with a blower. My 5600 lbs tahoe runs 13.911 @ 96.5 mph with a 145K mile stock internal L31 with a supercharger. This setup in a lighter RCSB truck could easily run in the 12's. Add some better heads and a cam and you should be in the 11's.

[tex2500]

Originally Posted by dsponder

heres what you do and he probably wont think about it but put your truck in 4wd then step on the brake all the way then give it gas till around 2000rpms or so then when its time to go floor it while letting off the brake you will get a nice jump.

dont forget to click out of 4x4 before you get moving too quick, added resistance will slow you down and if you get going fast enough the speed differential between front and rear axles is going to start destroying the weak links in your drivetrain.

[Hatfieco]

Thank you alpine tahoe. Im sick of the nay sayers in this thread lol. My buddy has pretty much the same setup but its a 96 two door tahoe Im guessing yours is a 4? His time was 16.0 and 15.9 at PIR this summer. The hemi does have potential but for a truck its torque curve is too high up in the RPMs and the computer controlled torque management sucks.

[dsponder]

Originally Posted by tex2500

dont forget to click out of 4x4 before you get moving too quick, added resistance will slow you down and if you get going fast enough the speed differential between front and rear axles is going to start destroying the weak links in your drivetrain.

yeah i forgot to mention that pop it out soon

[tex2500]

launching in 4x4 has significant effect on ET, especially on a standard trans, in my experience it knocked about 0.3-0.5s off of my 0-60 times as opposed to launching in second (tires wont even hook at all in 1st in 2wd). Right after the upshift from 1st to 2nd I pop the floor shifter out of 4x4 just in time to grab third. Im not sure how you would go about doing this with the push button systems some of the newer trucks have all the push button systems I have used have a pretty long delay while shifting, especially when shifting while moving under load.

[Pewter-Q]

Originally Posted by tex2500

launching in 4x4 has significant effect on ET, especially on a standard trans, in my experience it knocked about 0.3-0.5s off of my 0-60 times as opposed to launching in second (tires wont even hook at all in 1st in 2wd). Right after the upshift from 1st to 2nd I pop the floor shifter out of 4x4 just in time to grab third. Im not sure how you would go about doing this with the push button systems some of the newer trucks have all the push button systems I have used have a pretty long delay while shifting, especially when shifting while moving under load.

That is not good at all for your transfer case, whether 2wd or 4wd. People that launch in 4wd run in 4wd. Shifting your t-case under a load like that is terrible for it, especially with a oush button system. Also, I don't think reaching down to shift your t-case in the middle of driving down the track or backroad or wherever you are isn't very safe.

Also, if you can't hook up with your truck the way it is, you need better tires. Guys that really need 4wd to launch effectively are making a great deal of power. Just search Parish truck...

[Hatfieco]

With the manual its cake your second to third shift is slightly slower cause you don't take it out under load you do it right about at shift and you don't loose anytime there cause you can only shift these trannys so fast. I have been doing it in a 2003 dodge for the last 192k miles with a warmed up cummins in it. No problems at all. Besides a transfer case rebuild is only like 400 bucks and a set of rear tires is at least 400 and some change.

[Outlawz2004]

It would take more than just slapping on the blower for it to get there on a 350 unlike the newer engines. And like I said before, there are some slow hemis out there, just dont kid yourself into thinking that because you beat one you can handle them, there are plenty fast ones stock.

[Outlawz2004]

[/QUOTE]


Now that is a good running 350.

[Fast305]

Originally Posted by Outlawz2004

Now that is a good running 350.

Mine ran nearly as well with the Weiand 142 breathing through TBI swirl ports and cast-iron exhaust manifolds and currently runs VERY well with the ported vortecs, custom grind cam, and TPI. It needs aftermarket runners, but even now it pulls smoothly and diligently past 5,500 rpm. It needs trans work because the 700r4 is slipping on 1-2 shifts allowing the engine to free-rev. It still has the stock size servos and stock valvebody at the moment. At the same time the motor mount is broken and needs to be changed with the energy suspensions mount I have for it. The broken transmission mount allows the trans to move around. The movement causes metal on metal contact the knock sensor picks up on the 1-2 and 2-3 upshifts, pulling a noticable amount of timing. I have a Transgo shift kit and corvette servos to beef the shifting up. Once I get the 1-2 shift flare under control, I will get the 1-2 and 2-3 upshifts where they need to be by tweaking the governor weights and springs. Right now it makes the 1-2 shift about 5,750-5,800 and the 2-3 about 4,800. While the transmission is out, I am putting in a L35 S10 torque converter and going through it again for the hell of it. With the properly functioning trans and aftermarket oversize runners, it is going to move. The next and final step will be 3.73 gears and riding myself of the factory G80 setup for something more reliable.

I made this picture the other day while changing the thermostat housing I cracked when I removed the 160* thermostat for the 195* and installed it improperly. Yes mistakes happen when you rush trying to beat darkness. Cheap chinese made chromed, pot metal autozone thermostat housing.



Thats a launch at 1,000 rpm trying to not boil the tires, 1-2 shift still not complete at the 6K redline which the engine bounces off of for nearly a second, and an early 2-3 upshift. It will easily pull 85 mph out of 2nd holding it in gear with the shifter, which I did not because I was holding the camera.




FWIW, there is a reason this engine was built with forged crank and pistons, and I put a 255 lph fuel pump in the tank. Its going to get TWIN 10 lbs bottles with blow down tubes and remote openers under the back seat feeding 150 hp pills and the plate unit behind the TBI. The plate unit is already installed.