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09-18-2011, 03:07 PM
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#1 |
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Registered User
Join Date: Dec 2010
Location: Apison Tn
Posts: 490
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late model small blocks like LT1's or LS1's
Anyone runnin this type of engine swap?
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http://67-72chevytrucks.com/vboard/s...d.php?t=438550  69 LWB Fleet1994 Buick Roadmaster 1994 GMC Sonoma |
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09-18-2011, 04:56 PM
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#2 |
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Registered User
Join Date: Jan 2009
Location: Sacramento,California
Posts: 323
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Re: late model small blocks like LT1's or LS1's
There are a few members who are running them if you go to the engine and drivetrain forum they have a whole sub forum for LSx swaps here's a link to the LS swap thread http://67-72chevytrucks.com/vboard/s...d.php?t=412159
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1969 Chevy C10 Short Step -Project 2005 GMC Sierra Crew Cab 1500 -DD 2017 Laguna Orange Roadglide - Good Weather DD |
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09-18-2011, 06:52 PM
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#3 |
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Registered User
Join Date: Oct 2008
Location: Marianna Arkansas
Posts: 7,280
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Re: late model small blocks like LT1's or LS1's
ls1.com has thousands of swaps unbeliveable amount of information there. I personally have done two swaps, A6.0 4l80e into my 68 lemans convert and a 5.3 4l60e into a 89 c-1500 silverado.
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09-18-2011, 10:50 PM
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#4 | |
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Registered User
 
Join Date: Aug 2010
Location: Alta Loma, CA
Posts: 610
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Re: late model small blocks like LT1's or LS1's
Quote:
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67 5.3L Build |
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09-19-2011, 08:31 AM
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#5 |
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Registered User
Join Date: Sep 2005
Location: sc
Posts: 1,203
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Re: late model small blocks like LT1's or LS1's
all day every day
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71 Cheyenne C10 LWB cam'd 6.0/T56 Swap |
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09-19-2011, 09:50 AM
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#6 |
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1965 Chevy C10, 2005 4.8L/4l60
Join Date: Aug 2004
Location: DFW Texas
Posts: 8,546
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Re: late model small blocks like LT1's or LS1's
I am! 4.8/4l60e, 65 chevy SWB
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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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09-19-2011, 01:41 PM
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#7 |
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Has more rust than truck...
Join Date: Apr 2005
Location: Ivanhoe, MN
Posts: 2,421
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Re: late model small blocks like LT1's or LS1's
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09-19-2011, 02:53 PM
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#8 |
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meowMEOWmeowMEOW
Join Date: Sep 2009
Location: MKE WI
Posts: 7,128
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Re: late model small blocks like LT1's or LS1's
6.0 swapped here, and for reference I'm pretty sure its unfair to call an LT1 late model...that thing was ancient as soon as it started
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'66 Short Step / SD Tuned / Big Cam LQ4 / Backhalfed /Built 4l80e / #REBUILDEVERYTHING  |
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09-19-2011, 02:55 PM
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#9 | |
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Registered User
Join Date: Sep 2005
Location: sc
Posts: 1,203
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Re: late model small blocks like LT1's or LS1's
Quote:
We have some healthy LT1s roaming around in the Upstate of SC... one stock bottom end (132k) with H/C going 9s (1/4) with issues. Several others getting it done too!! Looking at getting one for my 88 LX Coupe so I can go to the LTx shootout!
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71 Cheyenne C10 LWB cam'd 6.0/T56 Swap |
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09-19-2011, 09:48 PM
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#10 |
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meowMEOWmeowMEOW
Join Date: Sep 2009
Location: MKE WI
Posts: 7,128
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Re: late model small blocks like LT1's or LS1's
running an LT1 is the mechanical equivalent to being lefthanded
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'66 Short Step / SD Tuned / Big Cam LQ4 / Backhalfed /Built 4l80e / #REBUILDEVERYTHING |
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09-21-2011, 09:15 PM
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#11 |
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Truck and auto performance nut
Join Date: Feb 2007
Location: McKinney,Texas
Posts: 3,848
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Re: late model small blocks like LT1's or LS1's
the genII sbc LT1/LT4 swaps were hot several years ago. No days you're passing on power you could have by selecting one.
The gen III/IV sbc motors are the way to go. From 4.8L on up to 7.0L.... and more with the aftermarket LSX blocks.
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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 |
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09-22-2011, 12:14 PM
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#12 | |
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meowMEOWmeowMEOW
Join Date: Sep 2009
Location: MKE WI
Posts: 7,128
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Re: late model small blocks like LT1's or LS1's
Quote:
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'66 Short Step / SD Tuned / Big Cam LQ4 / Backhalfed /Built 4l80e / #REBUILDEVERYTHING |
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09-22-2011, 09:49 PM
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#13 |
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Truck and auto performance nut
Join Date: Feb 2007
Location: McKinney,Texas
Posts: 3,848
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Re: late model small blocks like LT1's or LS1's
the 8.1 is a whole 'nother animal...and yes it would be considered a big block.
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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 |
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09-23-2011, 03:55 PM
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#14 |
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meowMEOWmeowMEOW
Join Date: Sep 2009
Location: MKE WI
Posts: 7,128
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Re: late model small blocks like LT1's or LS1's
i know its a different block and motor altogether, but i guess it tends to get lumped into the same category on forums...
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'66 Short Step / SD Tuned / Big Cam LQ4 / Backhalfed /Built 4l80e / #REBUILDEVERYTHING |
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09-23-2011, 09:37 PM
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#15 |
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Truck and auto performance nut
Join Date: Feb 2007
Location: McKinney,Texas
Posts: 3,848
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Re: late model small blocks like LT1's or LS1's
I think its more "vortec" then lsx.
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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 |
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09-23-2011, 11:40 PM
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#16 | |
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Senior Member
Join Date: May 2009
Location: Fort Worth, TX
Posts: 6,370
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Re: late model small blocks like LT1's or LS1's
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09-24-2011, 11:10 PM
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#17 |
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Registered User
Join Date: Dec 2010
Location: Apison Tn
Posts: 490
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Re: late model small blocks like LT1's or LS1's
Yay my thread got popular lol and Shon I like your style, I've always wanted to put a SBC in one of those fox bodies, right now I have a LT1 and a 4L60E i pulled out of a 95 Buick Roadmaster stationwagon, getting a 6speed from a trans am and rebuilding that LT1 then dropping both in my truck has crossed my mind a few times, i could get decent power out of the Pontiac 350 but id love getting good mpg's so I wont feel so bad at the gas station
Posted via Mobile Device
__________________
http://67-72chevytrucks.com/vboard/s...d.php?t=438550 69 LWB Fleet1994 Buick Roadmaster 1994 GMC Sonoma |
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09-27-2011, 12:56 PM
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#18 |
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Senior Member
Join Date: Aug 2002
Location: Valley Center KS
Posts: 3,524
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Re: late model small blocks like LT1's or LS1's
I think the achilies heal of the LT1 is the optispark. To me it just made it relatively unreliable.
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09-27-2011, 02:01 PM
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#19 | |
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meowMEOWmeowMEOW
Join Date: Sep 2009
Location: MKE WI
Posts: 7,128
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Re: late model small blocks like LT1's or LS1's
Quote:
Then, as mentioned, the opti-spark...which was poorly designed from the get go. On top of that, guys have been converting SBC heads (MUCH OLDER tech) to work with the reverse flow cooling on the LT1, because they flowed better AND because so few people ever made heads for it. The tech was dead before it started,
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'66 Short Step / SD Tuned / Big Cam LQ4 / Backhalfed /Built 4l80e / #REBUILDEVERYTHING |
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09-27-2011, 04:45 PM
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#20 | |
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Senior Member
Join Date: May 2009
Location: Fort Worth, TX
Posts: 6,370
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Re: late model small blocks like LT1's or LS1's
Quote:
Iron LT1 & Iron Vortec heads share the same port design & flow VERY well. Then you got the LT4 head. I see no reason to adapt gen 1 heads to a LT1. |
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09-28-2011, 10:52 PM
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#21 |
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meowMEOWmeowMEOW
Join Date: Sep 2009
Location: MKE WI
Posts: 7,128
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Re: late model small blocks like LT1's or LS1's
having not done the conversion myself I guess I can't really say firsthand, but there are countless threads on the subject. Same goes for machining SBC manifolds to fit the lt platform.
Ends up being kind of the stepchild motor. Its not the pioneer like the sbc, but it never got all the way to "modern fuel injected", quite like the ls series. I mean there are some cool TPI manifolds, and it was cool to get fuel injection before things like the Holley and Edel-broke stand alone systems came out in force.
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'66 Short Step / SD Tuned / Big Cam LQ4 / Backhalfed /Built 4l80e / #REBUILDEVERYTHING |
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