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#1 |
Registered User
Join Date: Oct 2009
Location: harrison twp MI
Posts: 292
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8.1 496 fuel injected in 66 suburbun
just trowing around the idea of puting one of these engines a 496 8.1 liter fuel injected in my 66 suburban just wondured if anyone done this and if so whats the pros and cons thanks
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#2 |
60-66 Nut
![]() ![]() Join Date: Mar 2007
Location: Coeur d'Alene, Idaho
Posts: 23,254
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Re: 8.1 496 fuel injected in 66 suburbun
It shouldn't be much different that converting to a 5.3 a 6.0 or any other LSX engine. I believe that the 8.1 are a drive by wire though. There are a few guys on this forum that have done the 5.3 or 6.0 swap. I'm sure one of them will chime in.
I would say there would be more pros than cons.
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Power Steering Box Adapter Plates For Sale HERE Power Brake Booster Adapter Brackets For Sale '63-'66 HERE and '67-'72 HERE and '60-'62 HERE and "60-'62 with clutch HERE Rear Disc Brake Brackets For Sale. Impala SS calipers HERE Camaro Calipers HERE D52 Calipers HERE 6 Lug HERE Hydroboost Mounting Plates HERE Last edited by Captainfab; 11-08-2009 at 02:06 AM. |
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#3 |
Sunburst C10!!!
Join Date: Jan 2009
Location: Texas
Posts: 2,560
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Re: 8.1 496 fuel injected in 66 suburbun
i think the 8.1 is like a bbc
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Gage 1967 C10 Shortbed Stepside |
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#4 |
60-66 Nut
![]() ![]() Join Date: Mar 2007
Location: Coeur d'Alene, Idaho
Posts: 23,254
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Re: 8.1 496 fuel injected in 66 suburbun
That is true, and a big block will fit without a lot of work as well.
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Power Steering Box Adapter Plates For Sale HERE Power Brake Booster Adapter Brackets For Sale '63-'66 HERE and '67-'72 HERE and '60-'62 HERE and "60-'62 with clutch HERE Rear Disc Brake Brackets For Sale. Impala SS calipers HERE Camaro Calipers HERE D52 Calipers HERE 6 Lug HERE Hydroboost Mounting Plates HERE |
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#5 |
Sunburst C10!!!
Join Date: Jan 2009
Location: Texas
Posts: 2,560
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Re: 8.1 496 fuel injected in 66 suburbun
i just looked this up and it has both ls and regular motor mounts
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Gage 1967 C10 Shortbed Stepside |
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#6 |
60-66 Nut
![]() ![]() Join Date: Mar 2007
Location: Coeur d'Alene, Idaho
Posts: 23,254
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Re: 8.1 496 fuel injected in 66 suburbun
Do you have a link where you found the info?
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Power Steering Box Adapter Plates For Sale HERE Power Brake Booster Adapter Brackets For Sale '63-'66 HERE and '67-'72 HERE and '60-'62 HERE and "60-'62 with clutch HERE Rear Disc Brake Brackets For Sale. Impala SS calipers HERE Camaro Calipers HERE D52 Calipers HERE 6 Lug HERE Hydroboost Mounting Plates HERE |
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#7 |
Intentionally Left Blank
Join Date: Dec 2008
Location: Broussard, LA
Posts: 355
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Re: 8.1 496 fuel injected in 66 suburbun
I have one in my '04 Truck. It's like an old school block with the modern LS style heads. Mine is a drive by wire. Conventional looking gas pedal with a potentiometer with wires instead of a cable. I didn't look at the motor mounts though. The torque is awesome. Let me know if you need any info on it.
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1965 C-10 Short Fleet 468/TKO 5-Speed 2004 2500HD Crew 496/Ally Blacked Out (SOLD!!) 1997 Formula WS6 2004 Jeep Wrangler (Sold) 2013 Jeep Wrangler (Sold) 2017 Jeep Wrangler (Blacked Out on 35's) 2011 GMC D-Max Dually Denali 3500HD (Sold) 2015 GMC D-Max Dually Denali 3500HD (Sold) 2018 GMC D-Max Dually Denali 3500HD (Sold) 2020 D-Max Dually Denali on 33x12.50's 1979 GMC Short Bed Step-Side 4x4 350/350 Low Miles |
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#8 |
Registered User
Join Date: Oct 2009
Location: harrison twp MI
Posts: 292
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Re: 8.1 496 fuel injected in 66 suburbun
thanks for the info sofar but what im really trying to find out how to do the computer so it will run thanks guys
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#9 |
60-66 Nut
![]() ![]() Join Date: Mar 2007
Location: Coeur d'Alene, Idaho
Posts: 23,254
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Re: 8.1 496 fuel injected in 66 suburbun
First you will need to have the engine wiring harness reworked (unless you can do it yourself) to accomodate your specific installation. Then once that is done, you will need to have the PCM reflashed to eliminate unused system components (EGR, extra O2's,VATS, etc), and be 'tuned' to work in your vehicle. Most guys send them off to companies that specialize in that sort of thing. Although if you're savy enough you can do it yourself with a program such as EFILive.
There are many companies that can reflash your PCM, but here are a few. Most of these can rework your harness as well. http://www.fastchip.com/ http://www.lt1swap.com/ http://www.currentperformance.com/ http://www.wait4meperformance.com/ http://www.nelsonperformance.com/ And if you want to give it a try yourself..... http://www.efilive.com/ http://www.tunercat.com/ Let us know if you to go forward with this project, I'm sure we'd all like to see your Suburban. Some of us may be able to help you out some too. Are you planning on running the overdrive trans that is behind the 8.1?
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Power Steering Box Adapter Plates For Sale HERE Power Brake Booster Adapter Brackets For Sale '63-'66 HERE and '67-'72 HERE and '60-'62 HERE and "60-'62 with clutch HERE Rear Disc Brake Brackets For Sale. Impala SS calipers HERE Camaro Calipers HERE D52 Calipers HERE 6 Lug HERE Hydroboost Mounting Plates HERE |
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#10 | |
Registered User
Join Date: Oct 2009
Location: Howell, MI
Posts: 403
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Re: 8.1 496 fuel injected in 66 suburbun
Quote:
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#11 |
Registered User
Join Date: Oct 2009
Location: harrison twp MI
Posts: 292
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Re: 8.1 496 fuel injected in 66 suburbun
thanks more info not sure what trans is best to run with the motor havent got that far yet anybody know how much an 8.1 is worth i can get one for 3000 with harness no computer
Last edited by powerdriver 1958; 11-10-2009 at 07:32 PM. Reason: Non subscriber selling |
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#12 |
1965 Chevy C10, 2005 4.8L/4l60
![]() Join Date: Aug 2004
Location: DFW Texas
Posts: 8,549
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Re: 8.1 496 fuel injected in 66 suburbun
You will have to trim the frame a smidge too. The 63-66 trucks all need that to install an LS motor in them. I would suggest motor mounts from CPP ( $129.00) this will greatly help your headers/manifolds depending on what you use. You can go with the stock mounts for a small block, but I think the 8.1 is a big block isnt it? Big blocks were not available until like 68 I think. I put in an ls in my 65 truck and use Wait4me performance, so far so good. I alo would suggest you get the 4L80E trans to handle all that torque, a 4l60/700 wont handle it especially if you have performance mods done to it.
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Clyde65 Rebuild of Clyde http://67-72chevytrucks.com/vboard/s...84#post8338184 69 Aristocrat Lo Liner build http://67-72chevytrucks.com/vboard/s...84#post7561684 ![]() ![]() ![]() support our troops! |
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#13 | |
Registered User
Join Date: Oct 2009
Location: Howell, MI
Posts: 403
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Re: 8.1 496 fuel injected in 66 suburbun
Quote:
I'd expect to see a 8.1/allison combo sell for that. |
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#14 |
Resident of Here
Join Date: May 2008
Location: Wesley Chapel, FL, USA
Posts: 7,716
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Re: 8.1 496 fuel injected in 66 suburbun
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~Bradley~ 2004 Black GTO LS2/T56 too much to list ![]() Miss having a truck ![]() |
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#15 |
Redefining LowBudget
Join Date: Mar 2009
Location: lebanon Cow Hampshire
Posts: 4,538
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Re: 8.1 496 fuel injected in 66 suburbun
ok lets say I wanted to do the same thing to my C10 my plan was to pull everything out of the truck from fan to tailshaft..the uPull it yard here sell all there engine/trans combos for the same $$ ( STUPID CHEAP) 20 buck for the harness and 20 for the cpu....what are you guys deleteing to need to have the cpu retuned??
and the BIG??? is what do these engines come in ....I'm looking at all options for a heart trans plant to up grade my 327 auto truck...saw this post and thought I would ask about these motors
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1970 C10 CST fleetside 472 ....big dreams little cash... SunShine Syndicate.. ![]() Mikes Sandwich Fair Run OCT 8th 2011
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#16 |
Registered User
Join Date: Jul 2006
Location: Central PA
Posts: 12,201
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Re: 8.1 496 fuel injected in 66 suburbun
cbrown,
good luck with your search but please read the site rules in regards to selling parts though, you must be a paid subscriber to offer items. Thanks...
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The Garage: 1968 K-10 SWB - "Project Money Pit" 1996 Z-71 - "huntin rig" 1969 C-10 LWB (SOLD) "Project flip that truck or else" 1993 Passport, F@rd 1-ton (SOLD)"Project Cousin Eddie" My Garage Build "The 1,000 footer" |
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#17 |
Registered User
Join Date: Jan 2012
Location: Roosevelt, UT
Posts: 22
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Re: 8.1 496 fuel injected in 66 suburbun
I know you can find a lot of 8.1/4L80E combos in the 01-05 3/4 ton suburbans. I found an 8.1/Allison 1000 complete chassis from an 05 HD crew cab with only 70,000miles for 3K in Salt Lake.
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