Model year differences

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Enigma540

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Good afternoon guys and girls. I have both a '97 pickup and a '99 suburban. The pickup is my "decent toy" and the suburban is just a crapper that I use to get from home to work and back. It's sets out in all the weather and heat and dust and humidity and basically gets ruined, so I just try to "keep it alive". Both vehicles have the original poppet injection and FPR. I replaced the fuel pump in the suburban around 10 years ago, and now it's having funky fuel pressure issues that I think are stemming from the FPR (or the poppet system). The pickup (with 130,000 miles on it) has no issues, so I'm thinking of buying the upgraded delco injection system for it, and taking all the old system from the pickup and putting it in the suburban, to keep from putting any more money into it than necessary. It only gets maybe 100-150 miles/month put on it at most, so hopefully that'll keep the ole rag alive for a few more years on the cheap. Are there any differences (between the '97 and the '99 that would keep this from working? I realize there are a few differences in the trans and the ecm, but are the injection systems exactly the same? Thanks in advance for any thoughts and input.
 

someotherguy

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Shouldn't be any difference between those two setups originally, and I get your idea but it may be a false economy. Those old poppets are brittle plastic and likely to break the clips on at least one if not several during removal, and that's also a bit of work to put 130K mile poppets into the other truck just to have them likely start failing in short time. Just some things to think about.

Richard
 

Enigma540

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That's a great point, and I appreciate you taking the time to post it. I've never replaced a set, so I wasn't aware that they get brittle. Maybe I'll upgrade the truck to the delco/Delphi system and see how it goes removing them first. The suburban still runs great, just has wonky fuel pressure and doesn't start once in a while. I just hate to waste any more money than necessary on it, so if the poppets crumble or don't look very "decent" coming out of the truck, maybe I'll just buy a cheaper poppet system for the sub at some point.
 

kennythewelder

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X2, someotherguy is rite.
 
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