HPP3 dyno results...

[skp_sr]

really?

[Rolando]

I took an average of 5 people who have similar engine types and here's what it came out to:

1-2=+3
2-3=+9
4-5=+5
Rev Limiter=6100

My assumption is that they want to stay in that "sweet spot" at the get go.

[BuiltupBowtie]

How is the SOTP meter after installing the hppIII? can you tell a difference?

[Quick03]

Originally posted by oxidizr
On a side note, I am bringing a stock 02' SCSB 5.3 w/ 1300 miles.

Testing completed....

First off the HPP3 results:

The first three passes of the day were to get some solid baseline numbers.

Peak RWHP N/A: 278.2
Peak RWTQ N/A: 318.0

I'm new to the board so don't kill me, but am I missing something? 278 rwhp out of a stock 5.3L?

[Nick]

Originally posted by Quick03



I'm new to the board so don't kill me, but am I missing something? 278 rwhp out of a stock 5.3L?

Yes, that was his buddies truck, his is a 2001. Check his sig.

2001 Silverado 5.3L SBSC 2WD
Current Mods:
*Flex-e-Lite 250 Electric Fans *Custom 4" Intake and Blitz filter
*NOS 130 HP dry nitrous system *ASM Full-length Headers w/ Dual Cutouts
*ASP Pullies*Vig 3500 *TransGo *HPPIII *Hal shocks *Caltrac bars
*Hotchkis Rear Swaybar*TA girdle*US Gear 4.10:1*Detroit Locker

[Tom400CFI]

Does anyone know what the effect of and HPP3 is on the '96 -'99 style 350? Could we assume the results would be similar?

[Rob2K2]

Can you use the same settings for s 4.3?

[red53gmc]

Originally posted by Nick99Chevy
Yes, that was his buddies truck, his is a 2001. Check his sig.

2001 Silverado 5.3L SBSC 2WD
Current Mods:
*Flex-e-Lite 250 Electric Fans *Custom 4" Intake and Blitz filter
*NOS 130 HP dry nitrous system *ASM Full-length Headers w/ Dual Cutouts
*ASP Pullies*Vig 3500 *TransGo *HPPIII *Hal shocks *Caltrac bars
*Hotchkis Rear Swaybar*TA girdle*US Gear 4.10:1*Detroit Locker

I believe that was Oxi's truck with and w/o the HPP3. The 291rwhp/315rwtq was what I was dynoing with my 01 Sierra. Mods were HPP3, Yank 3200, Hamm headers, ASP pulley, Electric fans, and K&N fipk.

[Nick]

You wait a month to point out my mistakes?

[The_Researcher]

U can change tire diameter setting as well correct?

[Nick]

Originally posted by Jeff@AAC
U can change tire diameter setting as well correct?

Correct.

['03RedMonster]

I'm guessing the use of a 160 thermostat made a decent difference as well. Both my LS1's the 5.7 out of the Camaro and this 5.3 feel noticebly more powerful in cold 50degree driving then in warmer 80degree+ heat. The ford and dodge v8s dont seem to be so finicky, at least the ones ive drivin. ANyone else notice a power difference in temperatures?

[Z71IN']

Originally posted by Tom400CFI
Does anyone know what the effect of and HPP3 is on the '96 -'99 style 350? Could we assume the results would be similar?

:
Anyone know the answer to this question??? Vortec 5.7 guys, any reports???????????????????????????

[thrlride]

I loaded the HPP3 on my 97 tahoe and it is slightly quicker. I haven't done the quarter or dyno'ed but it just feels better. I put the 160 stat in but I still couldn't stop the spark knock that started so I put in 89 octane and that didn't help so I put in 93 octane and that cleared it up. But now that 93 is $1.80 in NC I have gone back to 87. I also put in a 180 stat because it took forever to get heat in the winter with the 160. Now that it is warmer outside I plan on switching back to the 160.

[Hulkster]

Any results for a 5.7?

[chevytruckguy]

Just got my HPP3 yesterday. I have a 2000 tahoe limited with the 5.7 vortec motor, 3.42 gears, 275/45-20 tires, flowmaster cat-back kit, and a K&N filter. I know the G-tech's are not that accurate, but it's better than nothing. Bone stock it ran 16.00 @88.0 mph. With the 20's, flowmaster and K&N it ran 16.25 @ 86.8 mph. After the hypertech programming it ran 16.20 @ 87.10 mph. The settings on the hypertech were, 29.75 inch tire, 128 mph top speed, firmer transmission shifts, tuning for 93 octane, and stock thermostat. In first and second it pulled great, but in third, at around 3000 rpm/80 mph it just would not pull. After reaching 3300 it started to pull again. I'm guessing it was either air resistance or detonation, but i didn't hear any pinging. I thought there would have been more of an improvement, and I'm kind of disappointed. Temps were all around 55-65 degrees. In the winter, I did run it in 30 degree air and it ran 15.75 @89 mph; and that was without the hypertech. I know the 20's probably made my tahoe slower than stock, but for over $300 the hypertech should have made more of an improvement. Any help would be greatly appreciated.

[thrlride]

Yeah, my Tahoe got a little slower after I put on the 20's, same tire size as you. Them things are just heavy! I think I actually lost some MPG too!

[TXvortec350]

You should see any where from 8-13rwhp gains and 10-15rwtq gains.The 5.3s are strong and put out better rwhp numbers than our vortec 350s,but the torque is preety closr to the same.But we wont catch them on rwhp.Ive vortec350s put out a little more torque than the 5.3s on the dyno but the 5.3s had more rwhp.

1996-2000 5.7L (L31)
255hp @ 4800rpm & 330 lb/ft torque @ 2850rpm

2000-2002 5.3L (LM7)
265hp @ 4800rpm & 300 lb/ft torque @ 2850rpm
285hp @ 5200rpm & 325 lb/ft torque @ 4000rpm
as per GM Powertrain

ya gotta get the rpm up to make the 5.3L pull hard. a looser
converter can shave .5 sec off 1/4mi time.

airdeano

[badburban]

airdeano

Its good to see ya back here again. Havent seen ya around in a while. I take it the promotion has kept ya really busy.

Josh