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Old 07-25-2019, 06:39 PM   #1
72c20customcamper
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4200 6cyl conversion ?

I have a 4200 6cyl that's in my mom's Yukon. Truck has 73k on it but the frame is shot left lowere control arm fell off the truck, had to get her a new grand Cherokee to tow behind her motorhome. Now this engine has great power and would I think work great in my 68. Has anyone done one ?
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72 c20 custom camper Husky edition,
66 SS396 Chevelle 1964 Hawk, 63 Avanti,62 lark
1969 AMX ,
1968 c20 stepside ,85 K20
1977 Suburban sold
68 anniversary.
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Old 07-25-2019, 06:49 PM   #2
'68OrangeSunshine
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Re: 4200 6cyl conversion ?

Quote:
Originally Posted by 72c20customcamper View Post
I have a 4200 6cyl that's in my mom's Yukon. Truck has 73k on it but the frame is shot left lowere control arm fell off the truck, had to get her a new grand Cherokee to tow behind her motorhome. Now this engine has great power and would I think work great in my 68. Has anyone done one ?
The 4200 L6 is a popular conversion. You will find a whole forum on the subject over at www.inliners.org
the website of the Inliners International club.
[I just wish GM had built a Vortec 4800 L6, 2nd gen 292.]
You need some kind of computer onboard to run it. [ PCM.] But if you know about that stuff, it can be done.
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Every 25 years I like to rebuild that 292, whether it needs it or not.

Last edited by '68OrangeSunshine; 07-25-2019 at 07:13 PM.
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Old 07-26-2019, 09:35 AM   #3
weim55
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Re: 4200 6cyl conversion ?

I looked into one of these for a swap myself. The biggest issue is the oil pan is a front sump and won’t clear the crossmember. Not sure if the aftermarket makes a rear sump conversion pan?

Steve weim55 Colorado
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