Well , here I go again I have already installed an LS moter in a '79 C10 and started to put an LS motor in a '65 Chavelle. This time I am putting a 5.3 out of a '03 GMC Seirra into my daily driver '85 short bed Chevy C10. Here are some details on the motor....
I started off with a complete 5.3 pull out, disassembled it, left the bottom end alone, freshened it up with a new timing chain and an oil pump. I put a low mile Z06 Cam in it, and a set of ported (by Chris Mitchell) milled, and cut for bigger valve 5.3 heads.


The truck is my daily driver so I am hoping to get it back on the road ASAP!


I am hoping to pull the old 350 this week end so I can get started with the install. Thanks for looking.

 

nice truck and good luck on the project

 

been busy today. i started unhooking things last night.


this morning i pulled the 350/350th out.


im going to clean up the engine bay tonight. heres the empty hole...


i seperated the old combo and reinstalled the 350turbo on to the 5.3 today also. im going to try to have the motor sitting in its new home by the end of tomorrow!

 

making good progress, keep it up. what are you going to do about A/C?

 

i havent decided yet. i dont know if i can use any of the existing a/c or not. i need to do more research

 

when i put the 5.3L in my 82 c10, the A/C comp would hit the frame rail. theres someone on this site that fabs A/C brackets to relocate the compressor to the top. let me try and find a link for it.

 

What type of wiring harness are you gonna use

 

im going to reuse the 5.3 harness.

 

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all right, i finally got the motor/trans shoved into the truck tonight. for mounting i am using ls to smallblock adaptors with the original clamshell truck mounts. i am reusing the th350 mount. i moved the motor mounts up a 1/4" to compensate for the adaptor plates. looks like im gonna have to move the crossmember forward an inch. i checked the driveshaft and still have plenty of engagement. here are some pics....

 

well today, i reinstalled the fuel tank, ran new fuel lines, installed new fuelpump and filter, fitted and welded out the exhaust. i plan on tackling the wiring tomorrow.