ok im about to trade my 99 camaro for a 67 rolling chassis. my question is im having trouble finding a 5.3 and ecu/harness that come together so can i just buy a 5.3 and any truck ecu and have if flashed? also i read that the wiring harness between a ls1 and 5.3 have different coil plugs. i plan on using a ls1 style intake so do i need to just get a ls1 harness and coils from an ls1 ? if i do will it plug into the truck ecu? any help is much appreciated. oh also anyone know a good place to get the ecu reprogrammed in ky or a place i can ship it to

 

Bump..............I'm headed down the same path as well.

 

as far as I know the coil harnesses are the same, car/vs truck, but the injectors are different. You would probably be cheapest off finding a truck harness/pcm, then going to the junkyard and getting the car pigtales and soldering them on the the truck harness. which ever you find cheapest will work, doesn't really matter. You can still use the truck coils with the car intake. Hphouse in bowling green can get you tuned once you get it together. I took an rx-7/ls1 to them a few years ago and they dyno tuned it, very reasonable.

 

thanks i really appreciate it. can you pm me how much it cost (im sure it will be more since everything is goin up) just wanna know a ballpark price of what im getting into. also will a car ecu work or does it have to be a truck? and did you buy a aftermarket harness or cut out what u needed to and was it hard if ya did. thanks

Daniel