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Old 11-14-2017, 03:16 PM   #1
Mr.Supersonic
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5.3 mated to a 700r4?

hi all, i have a 68 c10 with a worn out 350 and a 700r4 i just put in. I've been thinking about doing a 4.8 or 5.3 swap into my truck. can i bolt up the 4.8 or 5.3 to my 700r4? if so what do i have to do to make this happen? anyone done this before and can send me a link? thanks!
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Old 11-14-2017, 08:28 PM   #2
67LS3GMC
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Re: 5.3 mated to a 700r4?

It will bolt up, but with only 5 bolts on the bell housing. If I remember right you will need a special flywheel, several companies make them like TCI.
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Old 11-14-2017, 09:46 PM   #3
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Re: 5.3 mated to a 700r4?

I like the idea. They also make carb intake manifolds and ignition kits for the LS so that you do not need a computer.
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Old 11-14-2017, 10:21 PM   #4
SoCoC10
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Re: 5.3 mated to a 700r4?

Keep it fuel injected. Just have to tell the ECU it's mated to a manual transmission. I'm running a 200R4 behind my LSX.
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Old 11-15-2017, 09:28 AM   #5
68Stepbed
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Re: 5.3 mated to a 700r4?

No special flywheel required, but you will need a flywheel spacer with the longer bolts. I'm running a 700R4 behind my LS1.
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Old 11-15-2017, 02:36 PM   #6
MARKDTN
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Re: 5.3 mated to a 700r4?

I would sell the 700R4 while someone can drive it and just get a 4L60E that will bolt right up (or may be bought as a package with the engine).
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Old 11-15-2017, 02:54 PM   #7
67ChevyRedneck
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Re: 5.3 mated to a 700r4?

Quote:
Originally Posted by SoCoC10 View Post
Keep it fuel injected. Just have to tell the ECU it's mated to a manual transmission. I'm running a 200R4 behind my LSX.
They're very finicky with their TV cable set up, how did you hook that up on the LS?
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