FarmTruc

iTrader: (5)

Does anyone have any information on what is involved with this conversion. I have a customer that is ready to go forward on the swap. I know I can do this swap and there's not much to it, I just wanted to know what parts will be involved and try to get most of them before I start. Anybody have any info or a site for this swap.
I'm swapping the 4.3L for an LS6 engine, 2002 Silverado/auto.

Is there anything else besides this stuff:

v8 harness
engine
mounts
pcm

-will the starter fit
-will the radiator be big enough
-will the clutch fan fit

any other info is appreciated,

allen

1BADHD

My brother would be highly interested in any info you can come up with on this swap. He has a line on a donor truck.....just dont know if it will be an easy swap.

Speartech

iTrader: (14)

If it's a 2002 you don't need a PCM, the 4.3 uses the same one as the LS1/Vortec engines. It just has to be reflashed for the V8.

The 4.3 starter won't work.

That's all I know for sure.

Flyer

iTrader: (1)

There was someone a while back that swapped a v6 for a v8 in the fbod forums ... you might could get some info from that. I would think the clutch fan would fit ... but I dunno. I think the smallest radiator they put in the trucks is a 28" which is what comes in all the half tons unless you are lucky enough to get the bigger one.

I don't know about the starter. The 4.3 is based off of the old sbc, just minus 2 cylinders. I think, but not sure on this, the starter is different for the ls1 breed motors.

What are you gonna do with that 4.3 once you get it out? I might be interested in it if the price is right. I've been wanting something to build for my boat.

FarmTruc

iTrader: (5)

Thanks 1badhd and speartech on the info. I should have put flash pcm instead of pcm.
I'll check out the other forum flyer, thanks.

I think it's def. worth it, instead of just buying a v8 truck.

i'll keep you guys posted,

allen

Brandon Boomhauer

iTrader: (10)

farm, keep this posted with updates and what you find etc.

will the 01 and earlier need a new pcm? One of my friends is going to do the swap sometime soon...

Slowverado

painless now offers a harness for the truck swaps....just came out.

Speartech

iTrader: (14)

01 is the break point.
2000 and earlier uses an older Vortec PCM on the 4.3, 5.0, and 5.7.
2001 and newer: LS1 PCM across the board. (4.3, 4.8, 5.0, 5.3, 5.7, 6.0, 8.1)

gonzo 6.2

iTrader: (8)

FYI
Kelly blue books says for 2002 silverado there is a $800 wholesale book difference between the 4.3 and the 4.8 and $1200 difference for the 5.3 everything else being equal.

Brandon Boomhauer

iTrader: (10)

speartech 5.0 ????