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95 4.3L CPI to 5.7 TBI is it possible?
Posted: Sun Dec 28, 2008 11:12 am
by Gordon
PIcking up a 95 safari that I will eventually swap a 350 into, i'm thinking about using a TBI 350 and just changing the wiring harness and the computer.
From what I can find out on the web, the main harness "should" be compatable with a tbi harness in terms of wiring compatability but we'll see.
Does anyone know for sure if it's possible to just plug-n-play?
Worst case scenario i swap in a carbed 350 and a 700r4 trans.
Gordon
Re: 95 4.3L CPI to 5.7 TBI is it possible?
Posted: Sun Dec 28, 2008 3:22 pm
by lockdoc
Re: 95 4.3L CPI to 5.7 TBI is it possible?
Posted: Sun Dec 28, 2008 4:26 pm
by Gordon
Sweet thanks LockDoc
Re: 95 4.3L CPI to 5.7 TBI is it possible?
Posted: Sun Dec 28, 2008 8:05 pm
by Gordon
Hey LockDoc will this work for my van as its a 95 CPI and I want to use an older TBI engine?
Re: 95 4.3L CPI to 5.7 TBI is it possible?
Posted: Mon Dec 29, 2008 4:22 am
by lockdoc
Yes it will. Did you read the thread I linked?
Re: 95 4.3L CPI to 5.7 TBI is it possible?
Posted: Mon Dec 29, 2008 12:14 pm
by Gordon
Reason I ask about the 95 yr specifically if that the transmissions are different for 95 then any other year.
If I change the chip in the computer won't that affect the shifting?
Re: 95 4.3L CPI to 5.7 TBI is it possible?
Posted: Mon Dec 29, 2008 5:03 pm
by lockdoc
I don't want to sound like a jerk Gordon but I spent a good amount of time writing a post about my conversion from CPI to TBI to help others. I gave you the link to read and it is obvious that you have not read it because the questions you have asked are within the first two paragraphs. I f you find something is missing then by all means post it. Otherwise take the time to read the posts that others have spent time on for others to see.
But in case you somehow missed it here is a quote of the second paragraph:
I will start with a parts list. You can use your existing ECM but will need to change your chip for one that matches your new engine and trans. You need to get a chip from the same year as your van. Reasons for this are the 92 will have a 700R4 trans. The 93-94-95 has the electronic version, which is the 4L60E. But the 95 chip cannot be used with a 93-94 trans and vice-versa due to changes made to the trans. My van is a 93 with a 4L60E with 3.42 gears. I installed a 95 305 TBI engine so I got a chip for a 93 C1500 with a 305, 4L60E trans and 3.42 gears. I just got lucky with the gear part. I would have used any chip regardless of the gear ratio.
Re: 95 4.3L CPI to 5.7 TBI is it possible?
Posted: Mon Dec 29, 2008 6:20 pm
by Gordon
No I read the post, what i'm not clear on is what to do about using an older TBI engine with my newer 95 trans which is different then any other year.
Should I just use an older 4l60e or switch to a 700r4?
For that matter does the vans computer control the trans or is there a seperate controller somewhere for it?
Re: 95 4.3L CPI to 5.7 TBI is it possible?
Posted: Mon Dec 29, 2008 7:58 pm
by lockdoc
When you actually have a TBI engine to go in your 95 van I'll help you out more.
Re: 95 4.3L CPI to 5.7 TBI is it possible?
Posted: Mon Dec 29, 2008 8:09 pm
by Gordon
As soon as this friggin snow goes away i'll get one.
I only have a car port at this new house so winter building is not a very warm option lol