5.3 Rebuild kits people on here have used? and Build sugestions

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11-30-2010, 05:29 PM
jbauto

5.3 Rebuild kits people on here have used? and Build sugestions

Was going to go with a LY6 and swap it in but i dont realy have the time as im deploying after xmas. I got a 5.3 block here im gonna do a quick over haul on new pistons rings bearings ect.

I want to bore it .20 over and im gonna do a quick light port job on the heads and get the seats done at my buddies shop.

What kits do you guys recommend ?

Im just looking at doing a small cam. long tube headers and exhaust and HP Tunner ecu. Also will be using a Maddog trans for this build.

Im just looking for a better pulling motor good on gas.

Thanks guys
11-30-2010, 06:37 PM
EmmerichLSx

You might be better off going .100 over and doing a clean up bore for an ls1 to make it a 5.7L. .100 over might sound crazy to you but there are a lot more piston choices for that bore. I forgot what the rod length is.
11-30-2010, 11:52 PM
408.Luke

rod length would be normal 6.125 if you want forged stuff or just stick in stock ls1 pistons and rods.
12-01-2010, 05:16 PM
jbauto

No this truck is a daily driver and hauler i dont want to build this motor so stock rods and OEM replacement parts and i want to be able to run pump gas 87 octane.

Is there a piston compression calculator somewhere?
12-01-2010, 05:48 PM
GraniteBlueNNBS

Your gonna have to punch it .100 over use stock rods and get some stock LS1 pistons...
12-01-2010, 08:38 PM
jbauto

What will this yeaild compression ratio wise with the 862 heads?
12-02-2010, 09:11 AM
GraniteBlueNNBS

over 10:1 with flat tops..
12-02-2010, 08:11 PM
lechez71

any problems overheating with boring it out .100?
12-02-2010, 08:37 PM
jbauto

Would like to know this also.
12-03-2010, 02:29 PM
pl4yboy

Quote:

Originally Posted by lechez71

any problems overheating with boring it out .100?

Quote:

Originally Posted by jbauto

Would like to know this also.

If it comes out to stock LS1 bore, there will be absolutely ZERO issue. A ton of people have done it. It's called an IRON LS1. IIRC, Blown06 has one. An iron 383 is built very similarly.