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#1 |
Registered User
Join Date: Aug 2012
Location: New Boston, New Hampshire
Posts: 35
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72 K20 4spd ls swap
Working on a 72 K20 with a 350 and 4spd set up with my son for his first vehicle. Want to make a reliable driver for him, this 350 would need quite a bit of help to be reliable. I put a 4.8 in my 72 C10 a couple years ago and love it. What sort of extra challenges are involved in putting a 5.3 into this 72 k20 with the original 4spd? Also this truck has a 4" lift if that helps with clearance issues.
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#2 | |
Registered User
Join Date: Jan 2016
Location: Washoe Valley, NV
Posts: 110
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Re: 72 K20 4spd ls swap
Quote:
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#3 |
Registered User
Join Date: Aug 2012
Location: New Boston, New Hampshire
Posts: 35
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Re: 72 K20 4spd ls swap
Thanks! That is good info.
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#4 |
Registered User
![]() Join Date: May 2005
Location: Blackfalds, Alberta
Posts: 585
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Re: 72 K20 4spd ls swap
I'm also thinking about putting a 5.3 into my K10.
If I'm keeping the NP205 and 4 speed, does everything have to get shifted forward? Is it going to require driveshaft changes?
__________________
1971 Chevrolet K10 - SWB, 5.3LS, 4L60e 1970 Chevrolet K5 Blazer - Project 1969 Chevrolet C10 - SWB, 350 Holley Sniper, 700r4 1969 GMC Suburban - 5.3 LS, 4L60e |
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#5 |
Registered User
Join Date: Jan 2016
Location: Washoe Valley, NV
Posts: 110
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Re: 72 K20 4spd ls swap
I only shifted mine forward about 3/8 of an inch. If I was doing it again I would shift it forward probably a full inch. My driveshafts did not need to be modified.
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