Year to year differences.
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Elder User
Joined: Jun 2008
Posts: 694
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From: Vashon, WA
Year to year differences.
I've been looking for an OBS PSD truck. I originally was only looking at '97s as I thought they were supposed to be the best. After more research it seems like only the 97s built in cali had more power because they use 120cc split injectors vs 90cc single injectors, also read they have more emissions crapola. I think I'd rather have a non cali truck and later down the road I can always put larger single shot injectors.
So can anyone tell me what, if any differences there are between a 94' truck and a '97 and any changes in between.
Thanks.
So can anyone tell me what, if any differences there are between a 94' truck and a '97 and any changes in between.
Thanks.
Hotshot
Joined: Jun 2007
Posts: 10,008
Likes: 7
From: Austin, TX
the '97 trucks actually did have a whole whopping 10 more hp than the '94.5s and '95s. can't remember if the '96 was 215hp or 225hp. doesn't matter either way though. a set of aftermarket injectors, chip, 140v IDM and some other little mods puts us wayy past the SD trucks so either way your good if you find a truck you like
Post Fiend
Joined: Mar 2007
Posts: 9,010
Likes: 5
From: Johnson City, TN.
I prefer the '96-'97 because of the little things. The HPO drins back differently. Computers are a bit different, not much. Several other things.
But in all if I found a nice '94 or '95 that stuff wouldn't stop me from buying it.
But in all if I found a nice '94 or '95 that stuff wouldn't stop me from buying it.
Posting Guru
Joined: Nov 2007
Posts: 2,158
Likes: 0
From: West Texas
my 97 didn't have a 120 volt IDm. It's the same as the 94.
The only visible difference on the two engines are the oil temp sensor and plug on the harness for it.
I know the pcm is different too and am about to find out how much by swapping them.
The only visible difference on the two engines are the oil temp sensor and plug on the harness for it.
I know the pcm is different too and am about to find out how much by swapping them.
Hotshot
Joined: Jun 2007
Posts: 10,008
Likes: 7
From: Austin, TX
its so easy now to work around the earlier trucks i don't think it makes much difference aside from personal preference. aftermarket HPOPs all have the option of having the check valve in the HPOP now, but still only one way to put in a 17* and thats to get TE to mod one. other disadvantages of the '94.5 and '95 is that multiple things are more expensive for them. IPRs are more expensive, but i'm using one for an E99 right now. throttle pedals are $800 compared to $500(those #'s may be off a bit). the early trucks didn't have a recall on the CPS for some reason and they don't use the grey CPS for them. they use a black CPS? mine has a '97 CPS in there right now and causes a rough idle. PCM is a bit different, but i thought it was just the programming? if thats the case chips even the playing field there. its easier to service the "other" screen on the FPR on the early trucks though. on the '96 and '97 they have a snap ring and plug you have to take off and the "screen" looks like they shoved a piece of steel wool or something in there. oh yeah and the early trucks had a rubber line running from the fuel bowl to FPR. the later trucks used a steel line that pushes in and holds with an o-ring. other than that isn't everything the same??
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From: Brandon, MB
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From: The boonies by Dallas OR
Mine has the IDI radiator, but I've never had problems with overheating so I don't know if it matters.
