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11-15-2010, 08:59 PM | #1 |
Registered User
Join Date: Oct 2005
Location: Sacramento, CA
Posts: 1,970
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LS Manifold Swap - Stock ECU?
Could you take a stock manifold off an LS motor and replace it with an aluminum (carb style with injector bosses) manifold, put a 4-barrel style throttle body on it (with IAC & TPS), put 8 injectors in the manifold, and make it work with a factory ECU?
Not so much interested in performance gains (if any) as I am in achieving a certain look.
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72 Cheyenne SWB Fleet Nut & bolt frame off in progress...99.9999% - supercharged 383 - 4 wheel discs - relocated fuel tank - My Build Thread |
11-16-2010, 12:21 AM | #2 |
Truck and auto performance nut
Join Date: Feb 2007
Location: McKinney,Texas
Posts: 3,848
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Re: LS Manifold Swap - Stock ECU?
yes.....I believe so. You're not really changing much...since fuel and spark is still being handled the same and only the air intake path/entry is different...w/o being problematic. Not sure what little gotchas there are tho...
I had the same desire...as far as look...but I went all the way with a carb.
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Kurt - '68 GMC short step - NIB '09 LY6 6.0L crate motor w/mods, NIB '12 crate 4L85e w/billet 3k stall Circle D, 3.73 posi 12 bolt, DynaTech f-swap headers, 3/4 drop, handling mods, etc. - my toy '72 Chevy LWB C-10 Highlander - 350/350 ps/pb/tilt/ac - not original but close '06 Chevy TrailBlazerSS - LS2/4L70e - little black hot rod SUV - my DD '18 Kia Sorento - wife's econo-driver '95 Chevy S10 - reg cab shortbed, LS, 4.3, auto... my '68's powertrain and chassis build -links broken A surprise phase - carb to efi -links broken |
11-17-2010, 12:53 AM | #3 |
Registered User
Join Date: Oct 2005
Location: Sacramento, CA
Posts: 1,970
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Re: LS Manifold Swap - Stock ECU?
Thanks 68GMCCustom.......btw.....just went through your build....NICE!
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72 Cheyenne SWB Fleet Nut & bolt frame off in progress...99.9999% - supercharged 383 - 4 wheel discs - relocated fuel tank - My Build Thread |
11-17-2010, 10:59 AM | #4 |
Truck and auto performance nut
Join Date: Feb 2007
Location: McKinney,Texas
Posts: 3,848
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Re: LS Manifold Swap - Stock ECU?
Thanks! Its really been more about the drivetrain upgrade, tho I did lower it and put big sway bars on to try and make it handle a bit better. My dream is to have a custom coilover IFS with rack and pinion and bags (and maybe 4 link or even something with a watts link - tho I don't like their look) on the back to really make it handle. It'll be a year or so before I get to the paint and body as well as interior upgrades...but at least it'll be a blast to drive (and race) while I'm waiting for the coin for the next phase!
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Kurt - '68 GMC short step - NIB '09 LY6 6.0L crate motor w/mods, NIB '12 crate 4L85e w/billet 3k stall Circle D, 3.73 posi 12 bolt, DynaTech f-swap headers, 3/4 drop, handling mods, etc. - my toy '72 Chevy LWB C-10 Highlander - 350/350 ps/pb/tilt/ac - not original but close '06 Chevy TrailBlazerSS - LS2/4L70e - little black hot rod SUV - my DD '18 Kia Sorento - wife's econo-driver '95 Chevy S10 - reg cab shortbed, LS, 4.3, auto... my '68's powertrain and chassis build -links broken A surprise phase - carb to efi -links broken |
11-17-2010, 03:24 PM | #5 |
On a budget like Fred Sanford
Join Date: Oct 2005
Location: Topeka, KS
Posts: 2,031
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Re: LS Manifold Swap - Stock ECU?
Yes, lots of people do it. The factory ECM doesn't care what orientation everything is in, so long as it's all there (tps, iac etc etc). You'll gain some upper end HP but may lose a little low/mid tq compared to a factory plastic front fed intake.
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'85 Silverado swb: 383 stroker, 10.5:1, vortec heads, 232/238 roller cam, RPM air gap, performer 750 carb, stainless longtubes, 3" duals/super 44's, T56/4.11 383ci build / exterior refresh thread '98 Camaro z28: 370ci twin turbo 370ci build '01 Tahoe LT 4x4: 5.3, longtubes/ory, magnaflow duals, custom tune....wife's DD |
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