TVS or Whipple on 5.3?
- Thread starter ls1frc
- Start date
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gooffeyguy
Tom
No experience with either of those on a 5.3, but the supercharger on my mustang has a bypass valve that's hooked to a vacuum line and stays open until the vacuum drops to a set point then closes, allowing boost pressure into the intake.
Engine intakes are under vacuum during no or part throttle, then as throttle (or load on the engine) increases the vacuum lessens and will be at 0 at full throttle.
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Engine intakes are under vacuum during no or part throttle, then as throttle (or load on the engine) increases the vacuum lessens and will be at 0 at full throttle.
Sent from my SM-G930V using Tapatalk
Hope this helps, this is from our tuner who has been running Magnachargers, Whipple and Edelbrock on his daily drivers for years.
Magnacharger and Edelbrock bypasses are set up for smoother boost application.
On his Whipple'd 6.2L, if you are riding right at the edge of boost and increase throttle by just 1%, it can go from 2" vacuum to 2psi of boost instantly, resulting in a bit jerky of a drive.
So my 5.3 with cam, headers, heads rips pretty good from 3500 and up. It is anemic from 0-20. Doing a roll from 20-60 actually pushes me back in the seat. 0-20 feels like it takes longer than 20-40.
I could do a 6.2 or bolt a TVS 2300 on for the same price. Which would you do? 5.3 has 145k on it but has new lifters, oil pump etc.
The thing I like about doing the blower is it's less hassle then tearing the truck back down again.
The thing I like about the 6.2 is it's simple.
Both will net similar gains.
I could do a 6.2 or bolt a TVS 2300 on for the same price. Which would you do? 5.3 has 145k on it but has new lifters, oil pump etc.
The thing I like about doing the blower is it's less hassle then tearing the truck back down again.
The thing I like about the 6.2 is it's simple.
Both will net similar gains.
Low mileage 6.2s cost around 3500 to 4k. Maybe recoup 1k from my long block?
I can get the blower setup for around 5k.
Really the labor involved isnt bad for the engine swap. Only thing I am unsure of is how to get the engine up my driveway off the freight truck.
I can get the blower setup for around 5k.
Really the labor involved isnt bad for the engine swap. Only thing I am unsure of is how to get the engine up my driveway off the freight truck.
Dantheman1540
Full Access Member
I'd do the blower and if the 5.3 dies in a few years put a 6 2 under it.
Was thinking the same. I am trying to find out from Magnuson what would have to change on the blower for it to fit square port heads if I ended up changing.
Dantheman1540
Full Access Member
There are adapters you can run to convert either way.
My experience daily driving a 4.8 with tvs1900 is that it's exactly what you've always wanted power wise. Idle, cruise and light throttle is as stock as stock can be. But the more you push that pedal the more it starts huffing and puffing. It's not like some turbo cars I've been in where continued part throttle suddenly takes off as if it were WOT or is jerky and not happy at part throttle.
I really want a 6.2 as well.
randeez
Full Access Member
yea...blower first all day.
Looks like you've already got a cam, so afm is deleted , and headers. Do some fueling mods and pulley it down for more boost. if youve already got ported cathedral heads i would just stick with them even if you go larger displacement , prob wont see much of a difference going to a stock square port.
Looks like you've already got a cam, so afm is deleted , and headers. Do some fueling mods and pulley it down for more boost. if youve already got ported cathedral heads i would just stick with them even if you go larger displacement , prob wont see much of a difference going to a stock square port.
Here's some info from the magnuson instructions.
Is this already some kind of spacer plate they include to make sure the blower is up higher? If so, I could just eliminate these and put the LSA adapter plates in and order square port blower.
Is this already some kind of spacer plate they include to make sure the blower is up higher? If so, I could just eliminate these and put the LSA adapter plates in and order square port blower.
I need to do my fuel pump soon. Was thinking I'd try to retrofit an aeromotive 340 in.
Dantheman1540
Full Access Member
Just get a walbro 450 a 6.2 with boost will likely max out a 340 pretty easy.
Reading over the instructions, looks like the kits are identical outside of the spacer plate for the 5.3 which I assume is to clear the DOD valley cover (which I don't have). Only other discrepancy I saw is the 5.3 instructions have you grinding down the alternator bracket for some reason, but not on the 6.2.
I also saw no required pinning of the crank, which I found odd.
I also saw no required pinning of the crank, which I found odd.
Dantheman1540
Full Access Member
I had to grind the alternator bracket down but that's easy. I ran up to 19psi on my 4.8 without a pinned crank. But that's pure luck and a ticking time bomb just like a G80 or 4l60.
Ok it must be because the supercharger is lifted up a bit over the 6.2. Since I am going to lift mine up anyway with the adapters, I'll plan on that step.
I will just order the 6.2 kit and buy separate spacer plates.
That's a crazy amount of boost, sounds fun man! I'm just looking to run in the high 13's here. I will roll with stock boost then pin the crank myself when I do a blower cam.
I will just order the 6.2 kit and buy separate spacer plates.
That's a crazy amount of boost, sounds fun man! I'm just looking to run in the high 13's here. I will roll with stock boost then pin the crank myself when I do a blower cam.
Dantheman1540
Full Access Member
It was fun but boost is really only a measure of how much air the engine cannot consume. Same blower and setup on my 6.0 only made 9psi due to bigger displacement and more efficient heads and cam and yada yada. The 6.0 setup is wayyyyy faster even thought the blower is the same.
Anyway for a DD the blower is awesome and no matter what engine you put it on you will be happy. Just do it right or face the consequences. Pins kits are cheap
