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V8 swap question
Posted: Sun Aug 31, 2008 7:55 am
by sparkyjdp
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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Re: V8 swap question
Posted: Sun Aug 31, 2008 9:01 am
by phatmaxx87
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
Re: V8 swap question
Posted: Sun Aug 31, 2008 10:49 am
by sparkyjdp
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.
Re: V8 swap question
Posted: Sun Aug 31, 2008 11:08 am
by mikedamech
What year is your van?
Re: V8 swap question
Posted: Sun Aug 31, 2008 11:12 am
by sparkyjdp
van is 96
Re: V8 swap question
Posted: Sun Aug 31, 2008 2:51 pm
by Smiliesafari
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)
Re: V8 swap question
Posted: Sun Aug 31, 2008 3:32 pm
by sparkyjdp