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General Site Info => General Discussion => Topic started by: zieg85 on September 18, 2018, 08:38:22 AM

Title: 4.3L V-6 interchange help
Post by: zieg85 on September 18, 2018, 08:38:22 AM

Does anyone know for sure if an engine out of a 97 C1500 will interchange with a 99 GMC Safari mini van?   

Title: Re: 4.3L V-6 interchange help
Post by: VileZambonie on September 18, 2018, 05:18:50 PM

Use the interchange search on car-part.com when initially looking into these things. If not, then there are sometimes small variances. For Example, my cousin totaled his Durango with a 4.7L. I took it for my Jeep but the only difference was the oil pan and pickup.

Title: Re: 4.3L V-6 interchange help
Post by: zieg85 on September 18, 2018, 05:54:13 PM

Quote from: VileZambonie on September 18, 2018, 05:18:50 PM

Use the interchange search on car-part.com when initially looking into these things. If not, then there are sometimes small variances. For Example, my cousin totaled his Durango with a 4.7L. I took it for my Jeep but the only difference was the oil pan and pickup.

I can't thank you so much for such an excellent resource. 

Title: Re: 4.3L V-6 interchange help
Post by: Stewart G Griffin on September 22, 2018, 01:33:22 PM

i'm not 100% "for sure," but, of course, both blocks should bolt in.  And, both engines should be L35's, so the inductions systems/topside stuff should be identical and should interchange, but even if they aren't the same mpfi, they should still interchange between both blocks and heads.

i think the dipsticks will be different.

i know this is not that helpful.  Can i ask what you are trying to do?

Title: Re: 4.3L V-6 interchange help
Post by: Stewart G Griffin on December 17, 2018, 01:04:21 AM

Part 2:


i'm thinking of going Astro.  i don't need to tow that heavy and i think a van is more useful to me than a suburban.   So, i was wondering if we could discuss the different iterations of the 4.3?

--The 85-6 had carb.  That's pretty solid and straightforward.

--Then 87 to 95 had tbi.  Again, pretty straightforward and problem free.
Although some astros had CPI (also see below) optional starting in 92

--Then the 96 to 2002 had the SCPI  "spider" fuel injection.
i have heard that this is problematic.  Both the CPI and SCPI.


---2002 on up had "regular" multi-point fuel injection.  And this should be ok?

Title: Re: 4.3L V-6 interchange help
Post by: zieg85 on December 27, 2018, 06:47:53 PM

Quote from: zieg85 on September 18, 2018, 08:38:22 AM

Does anyone know for sure if an engine out of a 97 C1500 will interchange with a 99 GMC Safari mini van?

after looking at the hidden rust I have concluded this will be parted out then filled with scrap and dropped off to get what I can for it.