BIG boosted 5.3s: come In and list ur setup!
04-25-2012, 08:48 PM
#42
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He has, but everything he has done was on a stock bottom end. Which are strong don't get me wrong. But what I wanna see is somebody pushing the limits of a BUILT bottom end. I think the 5.3 is a VERY well fitted motor for boost. And I think most ppl over look it b it's only 32x c.I. But the cylinder walls are just massive, we already know the block will withstand damn near anything. With a set of high quality rods and pistons, what really IS the limit of one?? Obviously the first suspect is head sealing issues, with the heavy cylinderwall, and an overall smaller cylinder, I think these 5.3s would seal better then the 4" bore stuff. I wanna seewhat happens at 30+ psi with one of these bad boys
04-26-2012, 01:59 PM
#43
I'm guessing you've never seen this thread? http://www.theturboforums.com/smf/th...nd-a-nova/210/
Fastest guy I'm aware of with a 5.3 bored to 347. 8.60's around 166 mph at a very high elevation track, Bandimere. 346 cid iron LSx, 2 psi launch, 19 psi max, 5800 ft elev, 8015 ft DA, E85 fuel, 3280# race weight. He's been low 8's now with his 6.0.
http://www.youtube.com/watch?v=LImns...7&feature=plcp
http://www.youtube.com/watch?v=_G2eW...2&feature=plcp
Fastest guy I'm aware of with a 5.3 bored to 347. 8.60's around 166 mph at a very high elevation track, Bandimere. 346 cid iron LSx, 2 psi launch, 19 psi max, 5800 ft elev, 8015 ft DA, E85 fuel, 3280# race weight. He's been low 8's now with his 6.0.
http://www.youtube.com/watch?v=LImns...7&feature=plcp
http://www.youtube.com/watch?v=_G2eW...2&feature=plcp
05-31-2012, 09:27 PM
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08' 5.3 stock
cammed and springs
mpt76
14lbs 550ish rwhp running 18lbs on street .. started pushin water on 19-20lbs arp head bolts and ls9 gaskets on the way.. 20-24psi coming soon. after stronger springs installed
pulls like a **** .. spins 10.50X26 mt streets 70mph roll in chevelle
cammed and springs
mpt76
14lbs 550ish rwhp running 18lbs on street .. started pushin water on 19-20lbs arp head bolts and ls9 gaskets on the way.. 20-24psi coming soon. after stronger springs installed
pulls like a **** .. spins 10.50X26 mt streets 70mph roll in chevelle
05-31-2012, 09:36 PM
#53
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So finished dyno'ing mine today... It's right at 20lbs on an unleashed performance rear mount turbo setup (comp oiless turbo). This is a bone stock short block with a cam in it. It does have ls9 head gaskets and studs. Short Block has about 30k on it.
Power-- 759hp/667tq!!! Now you got me interested in cranking it up just to see if I can hit skinnies numbers! That's the highest horsepower stock short bock 5.3 I've seen! Pretty awesome for these little motors!
Billy
Power-- 759hp/667tq!!! Now you got me interested in cranking it up just to see if I can hit skinnies numbers! That's the highest horsepower stock short bock 5.3 I've seen! Pretty awesome for these little motors!
Billy
05-31-2012, 10:21 PM
#54
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So finished dyno'ing mine today... It's right at 20lbs on an unleashed performance rear mount turbo setup (comp oiless turbo). This is a bone stock short block with a cam in it. It does have ls9 head gaskets and studs. Short Block has about 30k on it.
Power-- 759hp/667tq!!! Now you got me interested in cranking it up just to see if I can hit skinnies numbers! That's the highest horsepower stock short bock 5.3 I've seen! Pretty awesome for these little motors!
Billy
Power-- 759hp/667tq!!! Now you got me interested in cranking it up just to see if I can hit skinnies numbers! That's the highest horsepower stock short bock 5.3 I've seen! Pretty awesome for these little motors!
Billy
and to the wheels?
06-01-2012, 05:52 AM
#56
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Hey Chevelle,
Yes that's to the wheels.... I believe it's a 2001 block, but I can check on that to verify it. I'll get an updated video posted of it...the current one shows it at 706hp...before we turned up the boost a little more
Skinnies....those are insane numbers man! That's awesome!
Billy
Yes that's to the wheels.... I believe it's a 2001 block, but I can check on that to verify it. I'll get an updated video posted of it...the current one shows it at 706hp...before we turned up the boost a little more
Skinnies....those are insane numbers man! That's awesome!
Billy
06-01-2012, 08:38 AM
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Glad to see these setups, mine comes back fromthe machine shop today, rods are in the mail, should be together before the end of June.
Rossler called and my th400 is done
Rossler called and my th400 is done
06-01-2012, 02:22 PM
#60
Keep the 5.3 and don't let these guys tell you different.
The problem with the LS motor's is they have limited real estate when it comes to the deck. The way the cylinder sleeves and water jackets are set-up there is little actual deck material for the head to seal too. That is why big boost motors dry deck the heads so that there is much more material for the head and deck to seal together with. Same thing with thicker beefier heads. More material, less chance of moving around.
As someone else said SBF and GN guy's have been dealing with this for years and the answer is more deck material, more head material, copper gaskets, and smaller bores. A smaller bore like a 5.3 will have more meat around the cylinder for the head to seal too. SBC guys have an extra bolt at 5 bolts, but the principal is the same.
Big blocks have 4 also and they have the least of all the engine combo's problems with this, because they have a ton more material head wise and deck wise to seal to the block.
Yes 6 bolts help but the analogy I used the other day to someone was you can put stone turrents on a wooden fort(lsx with 6 bolts) but it's still not King Arthurs Castle(big block).
Nothing wrong with an LSX at all I love them, it's what I run just saying that this will work if the fuel, tune, compression and quench is correct.
I would use an as cast 225 trick flow head and a cam tailored to your set-up and turbo will not be laggy at all especially if you use certain tricks in the stock pcm to spool the turbo.
I can't wait to see this thing go
The problem with the LS motor's is they have limited real estate when it comes to the deck. The way the cylinder sleeves and water jackets are set-up there is little actual deck material for the head to seal too. That is why big boost motors dry deck the heads so that there is much more material for the head and deck to seal together with. Same thing with thicker beefier heads. More material, less chance of moving around.
As someone else said SBF and GN guy's have been dealing with this for years and the answer is more deck material, more head material, copper gaskets, and smaller bores. A smaller bore like a 5.3 will have more meat around the cylinder for the head to seal too. SBC guys have an extra bolt at 5 bolts, but the principal is the same.
Big blocks have 4 also and they have the least of all the engine combo's problems with this, because they have a ton more material head wise and deck wise to seal to the block.
Yes 6 bolts help but the analogy I used the other day to someone was you can put stone turrents on a wooden fort(lsx with 6 bolts) but it's still not King Arthurs Castle(big block).
Nothing wrong with an LSX at all I love them, it's what I run just saying that this will work if the fuel, tune, compression and quench is correct.
I would use an as cast 225 trick flow head and a cam tailored to your set-up and turbo will not be laggy at all especially if you use certain tricks in the stock pcm to spool the turbo.
I can't wait to see this thing go