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V8 swap question
V8 swap question
Well I am new here and have already started my swap, in fact it is already in. I went with a 5.7 vortec out of a 98 chevy c1500. I sent off last week to have the computer reprogrammed and got it back yesterday. Put it in and it runs rough, took it for a drive it shifts fine just is lacking power a kot of power. I was doing 55 at the bottom of a high by my house and by the time I hit the top it would only do about 30. read the codes and have a multiple cylinder misfire. any thought on this?
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![Think :-k](./images/smilies/eusa_think.gif)
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- I finally get the smurf thing
- Posts: 117
- Joined: Wed Aug 06, 2008 6:20 pm
- Location: Groveport OH
Re: V8 swap question
did you do any base engine work? How many miles does the 5.7 have? Did you replace the spider injector? Any blow-by? Let us know the history of the 5.7
-Vance
-Vance
96' Chevy Astro Cargo. Custom paint. 5.7 Vortec motor stroked out to a 383ci. 17" wheels Dad stripped it.
Re: V8 swap question
I bought the engine from a salvage yard in witchita ks. It has roughly 168,000 miles and ran when pulled. I dropped it in the van and got it to start but roughly, the next morning I could not get it to start. I then pulled the spider asembly out and cleaned it ( soaked in carb choke cleaner over night then installed it. That is about all I have done to the engine and all I know about it.
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- I finally get the smurf thing
- Posts: 121
- Joined: Sat Jan 05, 2008 11:32 pm
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- ASV Supporter
- Posts: 2667
- Joined: Sat Dec 02, 2006 12:34 pm
- Location: Orlando, FL
Re: V8 swap question
Try a stock ECU to see if it makes any difference. Welcome to the site. Post some pics of your ride. ![Dancing \:D/](./images/smilies/eusa_dance.gif)
![Dancing \:D/](./images/smilies/eusa_dance.gif)
1996 Safari SLX Hotair balloon transport vehicle
Re: V8 swap question
I tried the stock ecu and took it to a dealer to get the programing for it they wouldn't do it so I sent it off to get reprogrammed. It runs the same before and after the programming. also when it is a little warm it starts for a bit then stalls.
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