03 silverado 4.3 to 5.3

[jsisk]

In my option DBW is the way to go. On my 06 I converted from 4.3 cable to 6.2L DBW and also converted from class II to CAN. If you decide to go DBW give us a call and we wE can assist you

thanks for everybodys help and one more thing my truck is a wt does that matter at all?Ill just up date this thread when i start doing the swap

[Frenchy]

My truck is a W/T, most my parts came from a fully loaded Z71

[blacstar]

My truck is a W/T, most my parts came from a fully loaded Z71

I'll trade you, I want a black truck instead! and i will throw in a full tank of 87 octane! just to sweeten' the deal

[jsisk]

Thanks fenchy i was hopin i was gona need a diff harness or some crap bc mines a work truck

[jsisk]

Hey guys need ur help om one more thing,which 6.0 to get?I found a 05 complete with 70,000 miles for 900 bucks with harness.Thanks

[RedHeartbeat]

Sounds like a good deal to me

[jsisk]

Sounds like a good deal to me

will that year be ok in my 03 as long as i get the harness?And should i be alright with my fuel lines if i cut and use the fittings that are in the sticky on here

[Frenchy]

You can use any 01+ engine. The only difference in the actual engine between pre-03 and post-03 is the throttle body. And returnless or return fuel rails. Easy to swap either around.

[jsisk]

You can use any 01+ engine. The only difference in the actual engine between pre-03 and post-03 is the throttle body. And returnless or return fuel rails. Easy to swap either around.

Thanks Frenchy,how do i know if i have a return fuel set up?I have to lines that run into my spider injection but i seen on here it might be returnless.

[Frenchy]

Your trucks an 03? It's a return setup