is it worth the money n such to bore a 5.3 to 5.7 LS6 specs

[Faze2183]

?

if so what all is needed?

im really thinkin about doing that to my 5.3... if not just gunna go stright to a 6.0

[Sleaper]

?

if so what all is needed?

im really thinkin about doing that to my 5.3... if not just gunna go stright to a 6.0

Depends on what you want and what you're building it for...The way I figured it was that I already had the 5.3 and my builder will charge around $200-300 to bore it which was cheaper than buying a 6.0 block and having prep work done on it. Then you just have to buy pistons for the 5.7. You can reuse rods and crank. If you're on a budget, it's not a bad way to go.

You'll need pistons, bearings, rings, heads (compression will be too high with stock truck heads, I went with 317's).

[Faze2183]

Depends on what you want and what you're building it for...The way I figured it was that I already had the 5.3 and my builder will charge around $200-300 to bore it which was cheaper than buying a 6.0 block and having prep work done on it. Then you just have to buy pistons for the 5.7. You can reuse rods and crank. If you're on a budget, it's not a bad way to go.

You'll need pistons, bearings, rings, heads (compression will be too high with stock truck heads, I went with 317's).

hmmm... what if the rods, and crank are 170k miles old? LOL

pistons? brand? or stocker ls6s
bearings wise... Clevite or Federal Mogul? or stock?
rings? stockers?

i think i know someone that has a set of ls1 heads, would those be plenty good or try to get 317s?

[Sleaper]

hmmm... what if the rods, and crank are 170k miles old? LOL

pistons? brand? or stocker ls6s
bearings wise... Clevite or Federal Mogul? or stock?
rings? stockers?

i think i know someone that has a set of ls1 heads, would those be plenty good or try to get 317s?

If you are wanting to go forged with a 6.0 or the 5.7, it's the same. What I mean by that is you would have to buy forged parts for both so the cost is pretty much equal. The only difference being if you already have the block or if you have to buy one.

Pistons you can go with Diamond, Wiseco, Probe....
Bearings - Clevite or Federal
Rings - Don't skimp...Total Seal's are good
Heads - 317's will give you lower compression than the LS1's.

What are you building this for? N/A, nitrous or F/I? That makes a big difference as to what parts to put in it.

[Fastime09]

I have been Planing to do the bore thing w/ my 5.3 and from what i understand running w/ the 5.3 heads would have a compression of around 10.8..

[454navyss]

You'll need pistons, bearings, rings, heads (compression will be too high with stock truck heads, I went with 317's).

what will the compression be with stock ls1 pistons with 706 heads milled .030 and the block decked .004? im shooting for around 10:1-10.5:1

[Sleaper]

what will the compression be with stock ls1 pistons with 706 heads milled .030 and the block decked .004? im shooting for around 10:1-10.5:1

I would think higher than that. With stock 706's and the LS1 I think you will be around 10.8:1. If you mill them I think you'll be over the 11:1 mark. Since the 706's have 61cc, you'll need to get some 243's (64.5cc) or something that has bigger combustion chambers and then get them milled to obtain the CR you want.

[Toadz]

So you can just pick up some LS1 pistons and rods and they drop right into the 5.3 (bored of course)? Stock 5.3 crank is fine? Trying to get an idea of a build for next summer. I was planning on just doing pistons with no major overbore but this sounds like a good idea too for a N/A setup.

[RedHeartbeat]

Get the crank from the LS1, also, or plan on having the rotating assembly balanced.

[DennisG_02Silverado]

Depends on what you want and what you're building it for...The way I figured it was that I already had the 5.3 and my builder will charge around $200-300 to bore it which was cheaper than buying a 6.0 block and having prep work done on it. Then you just have to buy pistons for the 5.7. You can reuse rods and crank. If you're on a budget, it's not a bad way to go.

You'll need pistons, bearings, rings, heads (compression will be too high with stock truck heads, I went with 317's).

what would the compression come out to, bc i thought bout same thing.