2003 Silverado Stepside 2wd wt extra light Built 5.3 new 425hp engine
12-16-2016, 11:48 AM
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2003 Silverado Stepside 2wd ....NEW PRICE $5500......... Built 5.3 new 425hp engine
for sale is my 2003 Silverado Step side with built 5.3 only 2000miles since build has stock 5.3 block
2003 Silverado Stepside with Built 5.3
about 2k miles on motor and 129 on body
truck runs a and drives great just showing proof of new motor in pictures of build any questions .................................................. .............
...... CALL ONLY 203 415 3083 don't check here often enough ...........
CAN FACE TIME OR TANGO LIVE VIDEO OF TRUCK
For HEADS I found a good set of LS1 heads. Gave them a mild porting and had them milled .025". I then rebuilt them using CompCams 26918 beehive springs and 4705 seat/locaters. I had to turn down the OD of the locaters .050" to fit the spring pockets in the heads better. Used stock keepers and locks. Reused the factory lifters as they had limited miles and new OEM type pushrods. Reused the factory timing chain/gears and ported the oil pump. Camshaft is an OE Z06 roller with .550/.550 lift.
My final compression ratio using .051" thick MLS gaskets was 10.25-1. It's not as high as you would think because of the smaller 3.780 bore of the 5.3L engine. Having had the heads milled .025" brought the combustion chamber size down to 64cc, higher than I wanted but anymore and I would have had bolt hole alignment or intake sealing issues. Pistons stuck out of the hole an average of .007" so my quench was right where I like it at .045".
will take $7500 cash has new tires good brakes runs great must see selling my truck Bought a new toy for Christmas is located in east haven ct
2003 Silverado Stepside with Built 5.3
about 2k miles on motor and 129 on body
truck runs a and drives great just showing proof of new motor in pictures of build any questions .................................................. .............
...... CALL ONLY 203 415 3083 don't check here often enough ...........
CAN FACE TIME OR TANGO LIVE VIDEO OF TRUCK
For HEADS I found a good set of LS1 heads. Gave them a mild porting and had them milled .025". I then rebuilt them using CompCams 26918 beehive springs and 4705 seat/locaters. I had to turn down the OD of the locaters .050" to fit the spring pockets in the heads better. Used stock keepers and locks. Reused the factory lifters as they had limited miles and new OEM type pushrods. Reused the factory timing chain/gears and ported the oil pump. Camshaft is an OE Z06 roller with .550/.550 lift.
My final compression ratio using .051" thick MLS gaskets was 10.25-1. It's not as high as you would think because of the smaller 3.780 bore of the 5.3L engine. Having had the heads milled .025" brought the combustion chamber size down to 64cc, higher than I wanted but anymore and I would have had bolt hole alignment or intake sealing issues. Pistons stuck out of the hole an average of .007" so my quench was right where I like it at .045".
will take $7500 cash has new tires good brakes runs great must see selling my truck Bought a new toy for Christmas is located in east haven ct
Last edited by Chevyboy_203; 12-27-2016 at 10:47 AM.
