Hi evryone I'm new here,I just wanted to ask if it's possible and how much it would cost to convert my 2002 GMC Sierra Stepside from 4.8 vortec to 5.7 LS1? or turning my 4.8 to 5.7 stroker?
Hi evryone I'm new here,I just wanted to ask if it's possible and how much it would cost to convert my 2002 GMC Sierra Stepside from 4.8 vortec to 5.7 LS1? or turning my 4.8 to 5.7 stroker?
Last edited by USB; 10-04-2010 at 10:23 PM.
The conversion is easy, pull out the 4.8 and replace with the 5.7. The biggest cost is buying the LS1. You could also go with a 6.0 they are cheaper, unless you are set on an aluminum block and heads.
"ALisSa1 Silverado"1990 Chevrolet RCSB● 2002 Chevrolet Camaro LS1/4L60EScrimpin Ain't Easy( . Y . )
Do I need to change the ECU also?
Originally Posted by USB
Just have it retuned. All you need is the LS1 longblock.
One last question,LS1's from which year will fit my 2002 sierra?
All of them. Have you read the conversion stickies yet? Probably not. 4.8, 5.3, 5.7, 6.0, 6.2, 7.0, and anything LSX have the exact same block. EXACT!! Its like taking your 4.8 out and putting it back in.
'02 Silvy: Z71 EC Step Side 5.3L Nelson tuned
2013 GMC Acadia: SLT1 Carbon Black
1976 Corvette Stingray: Trying to save it, progress is slow.
^Ricky's Sweet PS Skilz
09/21/2010 02:31 <danger_ranger83> I'm not really worried about the looks...I want it to be fast and ugly...bc no one wants to get outrun by something ugly
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