5.3 vs80 power output ?
Thread Starter
Staging Lane
Joined: Aug 2019
Posts: 61
Likes: 6
From: Lumberton, NJ
5.3 vs80 power output ? I know this has a lot of variables , but around the ball park how much hp can I expect to make on this set up.
5.3 gen 4 bottom end
vs80 billet T6 1.32
14lbs boost
2.5” crossover
twin 44mm wastegates making 14psi
3” ic piping with 3” intercooler and 50mm bov
fic 1000’s and twin walbro 450 -8 fuel system
Btr stage 2 turbo cam
tbss intake
through a TH400 3400 tci stall converter.
what have you guys with this real similar set up made on about 10psi and about 14-15psi??
5.3 gen 4 bottom end
vs80 billet T6 1.32
14lbs boost
2.5” crossover
twin 44mm wastegates making 14psi
3” ic piping with 3” intercooler and 50mm bov
fic 1000’s and twin walbro 450 -8 fuel system
Btr stage 2 turbo cam
tbss intake
through a TH400 3400 tci stall converter.
what have you guys with this real similar set up made on about 10psi and about 14-15psi??
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Verdad Gallardo holdener has posted many vids with stock cam 5.3’s with headers making about 350 flywheel hp. That cam he listed should put it over 400.....
Take Holdners tests with a grain of salt… his numbers are always inflated. Those are in no way typical power levels. Average power per pound of boost is around 23-28 at the wheels on basic 5.3 builds.
Your not going to make 40HP at the wheels with a pound of boost unless you make 600+ at the crank NA. Numbers are defiantly screwy. Iced W2A intercoolers let you fudge that a bit, but for the most part take your NA power and divide by 14.7. That's roughly what a healthy turbo system will make per pound at the crank. Doesn’t matter if you have a thumper 100+mm or an 75mm. As long as your on a decent efficiency island on the compressor map and your back pressure isn’t through the roof, that’s what it will do. It’s not magic.
Your not going to make 40HP at the wheels with a pound of boost unless you make 600+ at the crank NA. Numbers are defiantly screwy. Iced W2A intercoolers let you fudge that a bit, but for the most part take your NA power and divide by 14.7. That's roughly what a healthy turbo system will make per pound at the crank. Doesn’t matter if you have a thumper 100+mm or an 75mm. As long as your on a decent efficiency island on the compressor map and your back pressure isn’t through the roof, that’s what it will do. It’s not magic.
Thread Starter
Staging Lane
Joined: Aug 2019
Posts: 61
Likes: 6
From: Lumberton, NJ
Take Holdners tests with a grain of salt… his numbers are always inflated. Those are in no way typical power levels. Average power per pound of boost is around 23-28 at the wheels on basic 5.3 builds.
Your not going to make 40HP at the wheels with a pound of boost unless you make 600+ at the crank NA. Numbers are defiantly screwy. Iced W2A intercoolers let you fudge that a bit, but for the most part take your NA power and divide by 14.7. That's roughly what a healthy turbo system will make per pound at the crank. Doesn’t matter if you have a thumper 100+mm or an 75mm. As long as your on a decent efficiency island on the compressor map and your back pressure isn’t through the roof, that’s what it will do. It’s not magic.
Your not going to make 40HP at the wheels with a pound of boost unless you make 600+ at the crank NA. Numbers are defiantly screwy. Iced W2A intercoolers let you fudge that a bit, but for the most part take your NA power and divide by 14.7. That's roughly what a healthy turbo system will make per pound at the crank. Doesn’t matter if you have a thumper 100+mm or an 75mm. As long as your on a decent efficiency island on the compressor map and your back pressure isn’t through the roof, that’s what it will do. It’s not magic.
Thats a good guess, yes. Pretty common setup I'm sure you can see what others with similar part combos are making. The answer to your original question is however much you want depending on boost levels, lol. Dont limit your self to 14lbs. Just run what ever boost number you need to hit your power goal.
Thread Starter
Staging Lane
Joined: Aug 2019
Posts: 61
Likes: 6
From: Lumberton, NJ
Thats a good guess, yes. Pretty common setup I'm sure you can see what others with similar part combos are making. The answer to your original question is however much you want depending on boost levels, lol. Dont limit your self to 14lbs. Just run what ever boost number you need to hit your power goal.
well when I tore the engine down it was superrrrr clean.. pulled the valve covers and it looked like the oil was changed every damn weekend lol cleaned it all up and put head gaskets and arp head studs and I’m gonna send it ... gen 4 rods so at least I have a little strength lol I’d like to make 14-20psi if I can I mean I have twin walbro 450’s and FIC 1000cc injectors and a vs80 turbo so I don’t see why it wouldn’t be able to. We’ll see sooner than later I guess lol
The 450's are great pumps, but people bottle neck them pretty badly with "Y" fittings. Its why you see all these nutty triple 450 pump setup things and people STILL have fuel issues. 2 450s should be enough fuel for 1200+ WHP. Easiest high flow setup IMO would be to run a -8 from each pump to each side of the rails. So each pump feeds 1 rail with a -8 line. Thats extreme overkill but your plumbing will never be limiting your pump flow. If you are set on a "Y" ensure you run at least 3/8 ID inlets(AN6) and a 5/8 (AN10) outlet.
Yes, it's just an estimate. usually pretty close when talking crank HP numbers. Following suit with doubling crank NA power per for every 14.7 lbs of boost or 1 atmosphere/1 bar of boost.
TECH Fanatic
Joined: Feb 2015
Posts: 1,080
Likes: 178
well when I tore the engine down it was superrrrr clean.. pulled the valve covers and it looked like the oil was changed every damn weekend lol cleaned it all up and put head gaskets and arp head studs and I’m gonna send it ... gen 4 rods so at least I have a little strength lol I’d like to make 14-20psi if I can I mean I have twin walbro 450’s and FIC 1000cc injectors and a vs80 turbo so I don’t see why it wouldn’t be able to. We’ll see sooner than later I guess lol
TECH Fanatic
Joined: Feb 2015
Posts: 1,080
Likes: 178
Why not pull pistons and set top gap to .028" and 2nd to.030" so you can turn it up? How many miles on motor? Hopefully over 200k and the rings have opened some. Bummer if you can only get to +650whp before butt'n rings and popping a land. E85, IAT < 150F and conservative timing will help keep CC temps lower to avoid a catastrophe failure.
Thread Starter
Staging Lane
Joined: Aug 2019
Posts: 61
Likes: 6
From: Lumberton, NJ
I don’t plan on daily driving the car or hot lapping track passes I just want it running. Once I get my new spot with my garage I plan to build a block and do all that when I build it.. idk how many miles are on the engine but I’ve been told it will be alright