Conversions & Swaps LSX Engines in Non-LSX Vehicles
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Old Mar 2, 2016 | 01:23 AM
  #1  
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Cool Turbo Foxbody Build.

Hello all, been lurking on here watching a few builds for awhile and had a bright idea last week to pull my newly built 331 stroker out and go LS.

Figured I would make a build thread to document the progress. I currently do not know how long it will take me to complete this swap.

I have had the car for a little over a year now, car has suspension and some chassis modifications. It should be fairly light as well.

Build Goals:
5.3L
ON3 Kit w/ 78mm
LS1 Intake
LS6 Cam, new springs
Head studs
Microsquirt
TH400 or Glide.

Here is what the car looked like when I purchased it.





After some suspension




We threw in a buddies nitrous 351w and had some fun for awhile while I was building my SBF 331 Stroker.

With a good friends help we ripped off the GT body kit, added the LX bumpers/panels and dropped in my 331.







So today, I started pulling out the SBF and picked up a 5.3L








Last edited by matt_u; Mar 2, 2016 at 01:45 AM.
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Old Mar 2, 2016 | 08:30 AM
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Looking forward to watching your build!
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Old Mar 2, 2016 | 12:52 PM
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In on this too! Welcome to the dark side! haha
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Old Mar 16, 2016 | 08:57 PM
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Update:

Installed the new AJE K-Member / A - Arms, they fit really well.
Picked up an Fbody oil pan and ordered a few things such as, Headgaskets - Fbody pickup tube, dipstick - Fuel Pump, Pre & Post Filters, Regulator - On3 Turbo kit W/ 78mm turbo - Paid a local guy to build a powerglide for me and a bunch of other things. Pictures of some progress below.









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Old Mar 16, 2016 | 09:01 PM
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Heck yea! That's a good parts delivery!
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Old Mar 16, 2016 | 10:14 PM
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Looks great. Why an external fuel pump? Can you not just put a more powerful pump in the tank?
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Old Mar 16, 2016 | 11:27 PM
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I no longer have the factory tank just the aftermarket 10ga cell or I'd do an in tank pump.

Anyone have any experience with a glide and say.. 3.27 gears on the street? Car will mainly see the track as I recently purchased a trailer, but would still like to drive it around on occasion.

Also thinking the car is going to be alot quicker now so after I get it running, its time for a better cage, better rear end and minitubs.
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Old Mar 17, 2016 | 09:07 AM
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Originally Posted by matt_u
I no longer have the factory tank just the aftermarket 10ga cell or I'd do an in tank pump.
Ah makes sense.
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Old Mar 21, 2016 | 02:15 PM
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Few more parts came in!

80lb Injectors, 3 Bar MAP, PAC 1218 Springs, Fbody windage tray, dipstick, LS9 Headgaskets and an AEM Wideband

I should be getting around to gapping the factory rings and starting to put the engine back together this week, put an offer in on a house today so progress may slow down temporarily.







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Old Mar 23, 2016 | 08:44 PM
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Old Mar 23, 2016 | 11:39 PM
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Paid for my Powerglide today, picked up an LS1 car intake and, gapped the factory rings..... jeez thats some tedious work.
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Old Mar 24, 2016 | 12:20 AM
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Why not an LS6 intake? From what I read they outflow the LS1 intake.
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Old Mar 24, 2016 | 12:33 AM
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Picked it up for a good price with a DBC throttle body.
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Old Mar 25, 2016 | 01:03 PM
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Originally Posted by MalcolmV8
Why not an LS6 intake? From what I read they outflow the LS1 intake.
Not super important when boosted
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Old Mar 25, 2016 | 02:03 PM
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Originally Posted by dmracing
Not super important when boosted
But it still flows better and makes better numbers when boosted doesn't it? I realize the gains would be more pronounced when naturally aspirated.
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Old Mar 25, 2016 | 08:42 PM
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Originally Posted by MalcolmV8
But it still flows better and makes better numbers when boosted doesn't it? I realize the gains would be more pronounced when naturally aspirated.
Probably not as you would think
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Old Mar 27, 2016 | 10:51 AM
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What 3 bar map you go with? what did it run with the 351 and 331 setups? Nice project.
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Old Mar 28, 2016 | 10:35 AM
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Originally Posted by toxic99
What 3 bar map you go with? what did it run with the 351 and 331 setups? Nice project.
I ordered the injectors and MAP sensor from EFIsource.

The 351 was stock bottom end with a set of 185cc heads and a 200shot it went Mid 6's.

The 331 was N/A and only taken out once it went 7.1.

Thanks I am a long way out but hopefully will be making some noise this year.
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Old Apr 1, 2016 | 10:31 PM
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good luck, sounds fun.
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Old Apr 5, 2016 | 10:47 PM
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Have a few more pictures of the progress. Slowly but surely it's coming along.







Gapped the rings


New Intake


Threw some heads from a 00' Vette on the motor along with the PAC1218's.
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