LT4 Conversion vs. Maggie - Page 7

oldman · 10-17-2017, 04:36 PM

maybe a non-intercooled Maggie....

1968ss350 · 10-19-2017, 12:35 PM

No sir this is the intercooled Maggie

Jfinley7 · 10-19-2017, 01:50 PM

Hey 1968ss350, have you had any issues with the Maggie or with the car since going with boost? I have to say that 470 rwhp sounds pretty low compared to what they advertise. However, I’m not looking to squeeze every bit of hp I can get. I’d be happy with a 100 rwhp gain.

toohighpsi · 10-19-2017, 10:30 PM

Quote:

Originally Posted by 1968ss350

No sir this is the intercooled Maggie

The first "canned" cals from magnuson ended up pretty rich on some cars, they have since been corrected. Did you contact Magnuson with the issue?
A custom tune is the best way to go if you want the max power from your combination though...

Jfinley7 · 10-19-2017, 10:49 PM

Does anybody know if you can run a very conservative tune with the LT4 blower kit? Can the tune and psi level be tuned down to say 6-7psi? Trying to play it safe as possible for a daily driver. I want boost but don’t want to go crazy with it.

laynlo15 · 10-20-2017, 06:57 AM

My original SCT handheld Power Enrich was off on mine, Mike corrected that quickly while I was on the dyno. Then it kicked some ass at 544/559 on the next pull on 93 octane. Then we went out and ran 10.91@129 on the first pass and 10.82 on the second on the handheld tune. Not bad I would say. We progressed just a little from there.

KingLT1 · 10-20-2017, 07:40 AM

Quote:

Originally Posted by Jfinley7

Hey 1968ss350, have you had any issues with the Maggie or with the car since going with boost? I have to say that 470 rwhp sounds pretty low compared to what they advertise. However, I’m not looking to squeeze every bit of hp I can get. I’d be happy with a 100 rwhp gain.

He made 509whp after a custom tune. The final number does not mean a whole lot anyway. Really need a baseline pull then compare gains. All dynos read different...he could go to another dyno and make 550whp.

misterjaayy · 10-20-2017, 12:28 PM

Quote:

Originally Posted by Jfinley7

Does anybody know if you can run a very conservative tune with the LT4 blower kit? Can the tune and psi level be tuned down to say 6-7psi? Trying to play it safe as possible for a daily driver. I want boost but don’t want to go crazy with it.

Andy’s tune puts out 8psi. Which from what I understand is pretty conservative.

KingLT1 · 10-20-2017, 01:36 PM

Quote:

Originally Posted by misterjaayy

Andy’s tune puts out 8psi. Which from what I understand is pretty conservative.

The tune has nothing to do with boost pressure on a PD or Centri blower setup. The pulley size and intake/exhaust/engine flow effect boost psi. For example....put headers on and boost pressure will drop but you will still make more power. Boost psi is just a measure of restriction.

That being said, ADM's base kit is designed to make 8psi with stock exhaust.

Jfinley7 · 10-20-2017, 01:49 PM

What psi would be considered “safe” to run on the LT1 stock internals? I’ve heard horror stories about guys throwing a piston at only 10psi, however, I think that has to be a tune issue more than anything.

misterjaayy · 10-20-2017, 05:02 PM

Quote:

Originally Posted by KingLT1

The tune has nothing to do with boost pressure on a PD or Centri blower setup. The pulley size and intake/exhaust/engine flow effect boost psi. For example....put headers on and boost pressure will drop but you will still make more power. Boost psi is just a measure of restriction.

That being said, ADM's base kit is designed to make 8psi with stock exhaust.

Ah good to know. Thanks for the info.

Joe's_cool_1le · 10-20-2017, 06:10 PM

Quote:

Originally Posted by Jfinley7

What psi would be considered “safe” to run on the LT1 stock internals? I’ve heard horror stories about guys throwing a piston at only 10psi, however, I think that has to be a tune issue more than anything.

I've been sitting just over 10PSI since I had my Whipple installed at 3k miles and now I'm at 12k. I beat it up throughout the summer with no meth for cooling. The consensus from a bunch of the shops that I've spoke to say 10PSI is as far as they'd like to push a stock LT1. But I'm guessing adding meth which can keep it clean and cool helps push that limit into the 700's.

I did see a 2016 SS get a maggie installed and it popped on the dyno just over 500hp so sometimes it's the luck of the draw.

Jfinley7 · 10-20-2017, 07:19 PM

Blowing at just over 500hp had to be a defect from the factory. That’s scary though because you never know. That’s exactly why I’m worried. 😬😬😬. I can’t afford to spend $6500 on a supercharger and then have to spend thousands more on a factory defect I didn’t know about.

hitmix300 · 10-20-2017, 07:48 PM

Quote:

Originally Posted by Jfinley7

Blowing at just over 500hp had to be a defect from the factory. That’s scary though because you never know. That’s exactly why I’m worried. 😬😬😬. I can’t afford to spend $6500 on a supercharger and then have to spend thousands more on a factory defect I didn’t know about.

If your engine grenades at 500hp then I would be checking the engine's calibration..

stay n/a if you're so worried. if you want to play you need pay.

10-17-2017, 04:36 PM	#85
oldman Drives: SS 6 speed of course Join Date: Jan 2016 Location: Hilo, HI Posts: 4,325	maybe a non-intercooled Maggie.... __________________ Forged short block, large duration sub .600 lift Cam Motion cam, 7200 RPM fuel cut, Pray Ported Heads, 3.85 pulley D1X, stage II intercooler, DSX secondary low side, DSX E85 sensor, Lingenfelter big bore 2.0 pump, ported front cats, 60608 Borla, LT4 injectors, ZL1 1LE driveshaft and Katech ported TB, ported MSD intake, BTR valvetrain, ARP studs, ProFlow valves, PS4 tires.

10-19-2017, 12:35 PM	#86
1968ss350 Drives: 1968 Camaro SS 350 Join Date: Nov 2015 Location: Long Beach, CA Posts: 243	No sir this is the intercooled Maggie __________________ 1968 Camaro SS 350 Lemans Blue -350 10.4:1 comp, Edelbrock Etec 200 heads, Comp XR288HR cam,AED750dp worked, Tremec TKO 600, console gauges w/tic toc tach, Moser 12 bolt, 4 wheel Willwoods Hyper Blue 2SS/6 speed, NPP, MRC, Nav, 5LQ 6 piston brakes, Black split spoke, Magnuson 2300 Heartbeat Supercharger, Flowtie upper grill

10-20-2017, 06:57 AM	#90
laynlo15 Drives: 2022 Lt1 A10 Join Date: Nov 2015 Location: clark, mo Posts: 8,873	My original SCT handheld Power Enrich was off on mine, Mike corrected that quickly while I was on the dyno. Then it kicked some ass at 544/559 on the next pull on 93 octane. Then we went out and ran 10.91@129 on the first pass and 10.82 on the second on the handheld tune. Not bad I would say. We progressed just a little from there. __________________ 2022 Lt1 6.2 A10, Maggie 2300, THPSI Port Inj/10 rib, Rotofab, E, Nickey, SCOL, Griptech, RC Bandits, Hoosiers/MT 9.80@142.96 1.44 60ft, 6.34@112 707/669 RWHP/TRQ. 16SS Maggie 2650 9.41@147 1.35 60ft, 5.99@119. 16 C7 A8 10.90@128 Bolt on stuff

10-20-2017, 01:49 PM	#94
Jfinley7 Drives: 2016 1SS Hyper Blue. Join Date: Dec 2016 Location: Texas Posts: 34	What psi would be considered “safe” to run on the LT1 stock internals? I’ve heard horror stories about guys throwing a piston at only 10psi, however, I think that has to be a tune issue more than anything. Last edited by Jfinley7; 10-20-2017 at 05:10 PM.

10-19-2017, 01:50 PM	#87
Jfinley7 Drives: 2016 1SS Hyper Blue. Join Date: Dec 2016 Location: Texas Posts: 34	Hey 1968ss350, have you had any issues with the Maggie or with the car since going with boost? I have to say that 470 rwhp sounds pretty low compared to what they advertise. However, I’m not looking to squeeze every bit of hp I can get. I’d be happy with a 100 rwhp gain.

10-19-2017, 10:49 PM	#89
Jfinley7 Drives: 2016 1SS Hyper Blue. Join Date: Dec 2016 Location: Texas Posts: 34	Does anybody know if you can run a very conservative tune with the LT4 blower kit? Can the tune and psi level be tuned down to say 6-7psi? Trying to play it safe as possible for a daily driver. I want boost but don’t want to go crazy with it.

10-20-2017, 07:19 PM	#97
Jfinley7 Drives: 2016 1SS Hyper Blue. Join Date: Dec 2016 Location: Texas Posts: 34	Blowing at just over 500hp had to be a defect from the factory. That’s scary though because you never know. That’s exactly why I’m worried. 😬😬😬. I can’t afford to spend $6500 on a supercharger and then have to spend thousands more on a factory defect I didn’t know about.

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