5.3, boost cam, w/MP70, 10psi, 6-speed. Will I see 500Hp at the wheels?
01-19-2011, 10:52 PM
#21
As long as everything is fabbed properly and effecient, yes it will no doubt.
Here's my dyno runs with my old LQ4 with stock 317 heads, mild cam with a mpt76 turbo custom front mount...
6speed, 4.10's, 10 Bolt, 28x13.5 Tires, Spec 3+ Clutch
9psi - 565rwhp/556rwtq
15psi - 786rwhp / 7xxrwtq (don't have dyno sheet)
I was TOLD by the new owner of my SS..
20psi - 866rwhp ??? I havent confirmed that yet tho.
Here's my dyno runs with my old LQ4 with stock 317 heads, mild cam with a mpt76 turbo custom front mount...
6speed, 4.10's, 10 Bolt, 28x13.5 Tires, Spec 3+ Clutch
9psi - 565rwhp/556rwtq
15psi - 786rwhp / 7xxrwtq (don't have dyno sheet)
I was TOLD by the new owner of my SS..
20psi - 866rwhp ??? I havent confirmed that yet tho.
That is totally irrelevant to the 5.3L with a 70mm. A bigger turbo is going to make more power at lower boost levels. Bigger cubes and more compression also.
01-20-2011, 07:21 AM
#22
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Read his POST, he is using a 5.3 with 243 heads. 37 more cubes and 6mm bigger turbo is not going to matter that much.
Please think it out before you post in response...
01-20-2011, 08:05 AM
#24
Foose, thank you for the dyno graph, Holly crap! Maybe I should scale back the boost. This set-up is going in a 2400lbs street car.
Newbee question still out there, do I match the WG & BOV with the same lbs spring or should one be slightly larger as a back up safety?
01-20-2011, 12:21 PM
#28
cubic inch difference and a half a point of compression does make a difference. Comparing an LS2, bigger turbo....ect. irrelevant. Its like saying a car with a 400+ci w/ a 88mm makes 1000whp this should make 500 no prob. Dumb logic.
01-20-2011, 01:13 PM
#30
Originally Posted by 71 chevy
Originally Posted by foose04
Stock heads/block 4.8L, Ls6 Cam, 5 speed, MP70 @ 10PSI
Same setup @ 15PSI
Same setup @ 15PSI
01-20-2011, 01:18 PM
#31
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4650 race weight. Whats your question? If two different dyno's, timeslips, and video isn't enough, try this HP Calulator out.
http://www.wallaceracing.com/hpcalculatoreigth.php
Input 7.00@98, 4650 weight (base scale used here at Charleston AFB)
Save you some time
Your HP computed from your vehicle ET is 686.14 flywheel HP and 617.52 rear wheel HP.
Your HP computed from your vehicle MPH is 714.13 flywheel HP and 642.72 rear wheel HP.
Not bad for a damn calculator, nailed to the same HP the dyno said.
http://www.wallaceracing.com/hpcalculatoreigth.php
Input 7.00@98, 4650 weight (base scale used here at Charleston AFB)
Save you some time
Your HP computed from your vehicle ET is 686.14 flywheel HP and 617.52 rear wheel HP.
Your HP computed from your vehicle MPH is 714.13 flywheel HP and 642.72 rear wheel HP.
Not bad for a damn calculator, nailed to the same HP the dyno said.
Last edited by foose04; 01-20-2011 at 01:28 PM.
01-20-2011, 02:05 PM
#32
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How is my feedback irrelevant? I posted the results of a very similar setup I built. You shouldnt let a simple post affect you so emotionally. I'll watch what I say so people like you dont start cutting themselves. Sorry....end of this conversation and back to the subject.
cubic inch difference and a half a point of compression does make a difference. Comparing an LS2, bigger turbo....ect. irrelevant. Its like saying a car with a 400+ci w/ a 88mm makes 1000whp this should make 500 no prob. Dumb logic.
cubic inch difference and a half a point of compression does make a difference. Comparing an LS2, bigger turbo....ect. irrelevant. Its like saying a car with a 400+ci w/ a 88mm makes 1000whp this should make 500 no prob. Dumb logic.
To your above statement on cubic inch, I can't even respond to the ignorance in that statement. So stupid. When you actually build a setup, drive it, dyno it, etc etc, then maybe your input with have relevance... next drive thru please.. BTW, Packers suck and the road stops Sunday for them..
I think it would be close, 10psi im going to guess 450-475whp. My friends 5.3 w/ a MP70 on it , stock 99 LS1 cam, 317 heads, stock LS1 intake, custom headers, 6-speed, I was guessing 550whp on 15psi on 93 octane.
We switched it over to E85 and then the new RAM powergrip HD couldnt hold it after that.
But I was tuning it and we started off at 5psi, then 10, and then 15. It was quite a noticeable difference going from 10 to 15psi.
We switched it over to E85 and then the new RAM powergrip HD couldnt hold it after that.
But I was tuning it and we started off at 5psi, then 10, and then 15. It was quite a noticeable difference going from 10 to 15psi.
Last edited by Vcious04; 01-20-2011 at 02:16 PM.
01-20-2011, 02:30 PM
#33
You did not post results, you posted what you thought. See below at your original post. GTFO brah, post real dyno information, nobody cares what you "guessed" your friends combo made, lol. What a tool.. Quit embarrasing yourself..
To your above statement on cubic inch, I can't even respond to the ignorance in that statement. So stupid. When you actually build a setup, drive it, dyno it, etc etc, then maybe your input with have relevance... next drive thru please.. BTW, Packers suck and the road stops Sunday for them..
To your above statement on cubic inch, I can't even respond to the ignorance in that statement. So stupid. When you actually build a setup, drive it, dyno it, etc etc, then maybe your input with have relevance... next drive thru please.. BTW, Packers suck and the road stops Sunday for them..
One word sums you up perfectly. EMO. 
01-20-2011, 10:34 PM
#37
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https://ls1tech.com/forums/forced-in...3-transam.html
On a side note to the OP if your car doesnt make 500whp on your setup then there's something wrong......
Goodluck!
01-21-2011, 05:44 AM
#38
[QUOTE=71 chevy;14388136] I'm familiar with his setup, what's not believable? It's a heavy *** truck
I agree with you. He's had a similar setup in his Nova IIRC.
Quite a few dumb responses in here and people getting but hurt about nothing. It's not that hard to search and find your answer. 500rwhp should be obtainable.
No offense but i recall him having a similar setup a while back maybe you should know what your talking about before you go shooting off at the mouth lol......
https://ls1tech.com/forums/forced-in...3-transam.html
On a side note to the OP if your car doesnt make 500whp on your setup then there's something wrong......
Goodluck!
https://ls1tech.com/forums/forced-in...3-transam.html
On a side note to the OP if your car doesnt make 500whp on your setup then there's something wrong......
Goodluck!
Quite a few dumb responses in here and people getting but hurt about nothing. It's not that hard to search and find your answer. 500rwhp should be obtainable.
01-21-2011, 07:05 AM
#39
[QUOTE=98Camarod;14391273]
I'm familiar with his setup, what's not believable? It's a heavy *** truck
I agree with you. He's had a similar setup in his Nova IIRC.
Quite a few dumb responses in here and people getting but hurt about nothing. It's not that hard to search and find your answer. 500rwhp should be obtainable. I did search, but still confussed! If it were you with 500rwhp goal running a MP70 on a 5.3 and a 38mm tial with a 10psi spring, what bov would you buy?
I'm familiar with his setup, what's not believable? It's a heavy *** truck
I agree with you. He's had a similar setup in his Nova IIRC.
Quite a few dumb responses in here and people getting but hurt about nothing. It's not that hard to search and find your answer. 500rwhp should be obtainable.
01-21-2011, 07:22 AM
#40
BOV spring pressure all depends on how much vacuum your motor is pulling at idle. Figure this out, narrow your decision on which valve to purchase, and find out if the supplied spring pressure is adequate for your idle vacuum. The Tial 50mm unit is a nice piece IMO.