LSX376 Users - Come In
I can relate- I ended up using the Standard products AC416- it's identical to the Holley model.
I read those threads as well and became more confused as I went. Even the Holley website is a little ambiguous.
The aforementioned AC416 fits as is and the pinout is correct; we'll see how it behaves when I fire mine a few weeks from now, at most.
Thanks for the info.
I read those threads as well and became more confused as I went. Even the Holley website is a little ambiguous.
The aforementioned AC416 fits as is and the pinout is correct; we'll see how it behaves when I fire mine a few weeks from now, at most.
Thanks for the info.
Andrew
I can relate- I ended up using the Standard products AC416- it's identical to the Holley model.
I read those threads as well and became more confused as I went. Even the Holley website is a little ambiguous.
The aforementioned AC416 fits as is and the pinout is correct; we'll see how it behaves when I fire mine a few weeks from now, at most.
Thanks for the info.
I read those threads as well and became more confused as I went. Even the Holley website is a little ambiguous.
The aforementioned AC416 fits as is and the pinout is correct; we'll see how it behaves when I fire mine a few weeks from now, at most.
Thanks for the info.
The 543-34 seems to be working fine. Fired it up and took it for it's maiden voyage. Owner was over anxious to get his hands on it and drive it despite it not being tuned.
Put a tune together based on the Volvo. AE needs work but it drove without issues.
So quiet you can hear the intake charge in the sheet metal plenum.
Put a tune together based on the Volvo. AE needs work but it drove without issues.
So quiet you can hear the intake charge in the sheet metal plenum.
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TECH Fanatic
Joined: Jan 2022
Posts: 1,034
Likes: 468
From: Seattle
I think there's a bunch of people that would be interested in that information.
Randomly popping in and saying "X motor sucks, I broke one twice" with no other information is silly and counterproductive.
Randomly popping in and saying "X motor sucks, I broke one twice" with no other information is silly and counterproductive.
Here's a little update.
Owner has been driving the car everyday in mid-90s FL weather. Big shout out to Andrew (ProjectGatTagO) for helping out with the tune. I initially left it on the 6psi WG pressure and had him slowly raise the shift light RPM as he put miles on the engine. He used to run 15+psi with the Keith Black 540ci MOPAR with Indy heads and a Procharger and said it used to haze the 325 DRs in 3rd and so 6psi with the LSX felt "slow". Sunday I turned on boost control with a target of 12psi dome pressure and set the boost safety to 14psi just in case. Got a call saying he just got a big scare. Not expecting a turbo 376ci with 12psi to match a s-charged 540ci with 15+psi, he got on it and the car starting going sideways in 3rd and almost lost it. He has yet to go over 5500 RPMs! You can guess what his Butt-meter is telling him when comparing the 2 setups. After thinking what 6700 and 20psi might be like, all future thoughts of upgrading the LSA rods, pistons and Cam are out the window. He's got all he wants. No oil leaks, starts right up hot or cold, smooth, quiet and scares him.
To say he's stoked is an understatement. MOPAR purist be damned!
Owner has been driving the car everyday in mid-90s FL weather. Big shout out to Andrew (ProjectGatTagO) for helping out with the tune. I initially left it on the 6psi WG pressure and had him slowly raise the shift light RPM as he put miles on the engine. He used to run 15+psi with the Keith Black 540ci MOPAR with Indy heads and a Procharger and said it used to haze the 325 DRs in 3rd and so 6psi with the LSX felt "slow". Sunday I turned on boost control with a target of 12psi dome pressure and set the boost safety to 14psi just in case. Got a call saying he just got a big scare. Not expecting a turbo 376ci with 12psi to match a s-charged 540ci with 15+psi, he got on it and the car starting going sideways in 3rd and almost lost it. He has yet to go over 5500 RPMs! You can guess what his Butt-meter is telling him when comparing the 2 setups. After thinking what 6700 and 20psi might be like, all future thoughts of upgrading the LSA rods, pistons and Cam are out the window. He's got all he wants. No oil leaks, starts right up hot or cold, smooth, quiet and scares him.
To say he's stoked is an understatement. MOPAR purist be damned!
That is wild that he went from a KB 540 procharged combo to turbo LS and what's more is the comparison in performance with such a huge spread in cubic inches.
What made him make that change?
Love that he's enjoying it especially in that heat, I loved my old carbed LS6 454 car but the fuel injected turbo LS is just so much more pleasant to drive.
What made him make that change?
Love that he's enjoying it especially in that heat, I loved my old carbed LS6 454 car but the fuel injected turbo LS is just so much more pleasant to drive.
TECH Enthusiast
Joined: Mar 2013
Posts: 503
Likes: 38
How old is the owner and what is his health like? Just kidding but that is the only year/model Mopar that I have ever liked and love the color.
Car was purchased new to start college. You can do the math 
The KB had valvetrain misalignment issues and was needing a 3rd rebuild. It ran hot and on summer days like now, needed at least an hour before it would restart, leaked oil worse than an OEM MOPAR big block and the 727 had issues.........then he took a test drive in the Volvo . Seriously, he was just frustrated. Selling the damaged KB block (couple of wiped out lifter bores), the Indy heads, Pro-charger, 727, etc, etc, financed almost the entire swap, LSX longblock, TH400, PTC converter and upgraded suspension. Still has the numbers-matching 440ci and 4-spd even though they're never going back in the car.
The KB had valvetrain misalignment issues and was needing a 3rd rebuild. It ran hot and on summer days like now, needed at least an hour before it would restart, leaked oil worse than an OEM MOPAR big block
and the 727 had issues.........then he took a test drive in the Volvo . Seriously, he was just frustrated. Selling the damaged KB block (couple of wiped out lifter bores), the Indy heads, Pro-charger, 727, etc, etc, financed almost the entire swap, LSX longblock, TH400, PTC converter and upgraded suspension. Still has the numbers-matching 440ci and 4-spd even though they're never going back in the car. Car was purchased new to start college. You can do the math
The KB had valvetrain misalignment issues and was needing a 3rd rebuild. It ran hot and on summer days like now, needed at least an hour before it would restart, leaked oil worse than an OEM MOPAR big block and the 727 had issues.........then he took a test drive in the Volvo . Seriously, he was just frustrated. Selling the damaged KB block (couple of wiped out lifter bores), the Indy heads, Pro-charger, 727, etc, etc, financed almost the entire swap, LSX longblock, TH400, PTC converter and upgraded suspension. Still has the numbers-matching 440ci and 4-spd even though they're never going back in the car.
The KB had valvetrain misalignment issues and was needing a 3rd rebuild. It ran hot and on summer days like now, needed at least an hour before it would restart, leaked oil worse than an OEM MOPAR big block
and the 727 had issues.........then he took a test drive in the Volvo . Seriously, he was just frustrated. Selling the damaged KB block (couple of wiped out lifter bores), the Indy heads, Pro-charger, 727, etc, etc, financed almost the entire swap, LSX longblock, TH400, PTC converter and upgraded suspension. Still has the numbers-matching 440ci and 4-spd even though they're never going back in the car.I guessed running hot might have been an issue but the rest, damn.
It's amazing how bad drivability can take all the pleasure out of owning a car.
My 99 turbo Camaro ran really badly when I got it, I tried tuning it myself but was unable to for various reasons and I started to wonder if I'd made a mistake in purchasing it.
After breaking down and hiring Pat G. to tune it, my outlook has completely changed, the car is so nice to drive even with manual steering, brakes and TH400.
Well I hope he enjoys the hell out of it, sounds like his love affair with the car has found a new lease on life, thanks to you.
