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Old 10-31-2014, 06:25 PM   #1
cardreams
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Ls1 swap

I know this question must have been asked many a time but here goes iam going to do a ls1 swap in my 70 out of a 2000 vette can I use a 400 or 700r4 tranny and just get the CPU flashed for that and what else do I need to change to put It in the truck water pump,oil pan, ext? Thanks for hep in advance
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Old 10-31-2014, 06:51 PM   #2
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Re: Ls1 swap

Fuel system will be a biggie/
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Old 10-31-2014, 07:27 PM   #3
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Re: Ls1 swap

In the engine drive train section there is a ls swap section, you should check it for your answers.
http://67-72chevytrucks.com/vboard/f...play.php?f=206
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Old 10-31-2014, 07:34 PM   #4
cardreams
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Re: Ls1 swap

Quote:
Originally Posted by boraxman View Post
Fuel system will be a biggie/
Why?
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Old 10-31-2014, 10:03 PM   #5
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Re: Ls1 swap

Ls motors are electronically injected, doesn't use a mechanical pump. So you have to run a (usually intank) electric fuel pump and sending unit. So you'd likely have to switch to under the bed in frame tank and pump assembly, abandoning the incab tank.
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Old 10-31-2014, 11:24 PM   #6
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Re: Ls1 swap

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Originally Posted by 68shortwide View Post
Ls motors are electronically injected, doesn't use a mechanical pump. So you have to run a (usually intank) electric fuel pump and sending unit. So you'd likely have to switch to under the bed in frame tank and pump assembly, abandoning the incab tank.
They make in line fuel pumps so you dont have to abandon the in cab tank.
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Old 10-31-2014, 11:42 PM   #7
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Re: Ls1 swap

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Originally Posted by sprint_9 View Post
They make in line fuel pumps so you dont have to abandon the in cab tank.
Hmm...didnt know that. Meh that's what this boards for. Lotta knowledgeable people to steer the halfwits like me straight
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Old 10-31-2014, 11:44 PM   #8
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Re: Ls1 swap

Or you can use a surge tank and keep your in-cab tank. You can check out my build for the one that was built for my truck. Or Edelbrock is building one for one of their EFI systems.




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Old 11-11-2014, 10:39 PM   #9
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Re: Ls1 swap

Where would I get the motor months and headers for this swap ??
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Old 11-11-2014, 11:42 PM   #10
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Re: Ls1 swap

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Where would I get the motor months and headers for this swap ??
LMC sells many LS swap parts.
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Old 11-12-2014, 12:46 PM   #11
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Re: Ls1 swap

I used Walpro 255 inline pump for my street rod LS6 swap.
Used LS shorty headers from Hooker thru Summit but this
was for a 48 ford truck. I needed these headers because they
are rear exit to clear steering. I also used computer and wiring
harness from PSI.
Also I used 4l60e trans from 96 Vette.
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Last edited by FRCvette; 11-12-2014 at 12:49 PM. Reason: added info
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Old 11-25-2014, 05:53 PM   #12
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Re: Ls1 swap

What is the best mounts to use
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Old 11-25-2014, 10:43 PM   #13
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Re: Ls1 swap

I recommend use the same manufacturer for headers and motor mount adapters. I used Doug's Headers because back in 07 there were not many cos doing LS stuff for 64-65 Chevelles. Use a factory ECU and have it tuned locally. I'm running a non computer controlled 200R4 but had my harness built with the 4L60 wiring just in case I blow up the 200. If you get a ECU from a car with a Manual trans your 400 or 700 will work fine. If you get an ECU from a auto vehicle, your tuner can just tell the ECU you are using a manual.
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Old 11-25-2014, 11:41 PM   #14
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Re: Ls1 swap

Have a question is it worth the swap do you like the ls1 I can't wait ?
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Old 11-26-2014, 08:45 AM   #15
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Re: Ls1 swap

excellent swap , love mine , fuel delivery is biggest challenge , i ditched the in cab tank used a slightly modified 90 jeep wrangler tank under the bed , and a stock 03 silverado fuel pump and cartage , corvette regulator/filter
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