Awesome! My dad has a 78 we are wanting to do this too as well. we already have the 5.3 and harness, but just need theQuote:
Originally Posted by Slowcrewcab
time to get started. Cant wait to see pics of the finished product.
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Awesome! My dad has a 78 we are wanting to do this too as well. we already have the 5.3 and harness, but just need theQuote:
Originally Posted by Slowcrewcab
time to get started. Cant wait to see pics of the finished product.
Well swap is done besides few wires to clean up! As stated easy easy swap. Started by piling the junk motor and tranny together. Bolted the dirty dingo mounts to the new 5.3 and lowered motor in by itself. Left the mounting bolts loose on the motor mounts so I could adjust when installing trans to crossmember. Once trans was mounted I tightened the motor mounts and started the wiring. With the harness I used wiring was easy easy! Plug and play besides ECM hot wire, ECM ignition and fuel pump wire. Used a carter p5000 inline fuel pump that I believe isn't enough so ill be ordering a walbro before to long. Ran 3/8 fuel line from bottom of tank( was already tapped with jic fitting). As of running shirt in money a ran stock truck manifolds for the time being, had to notch frame on passenger side maybe 1/4 inch, ran 21/2 inch true duals to 40 series flow masters. Using the dirty dingo mounts I didn't have to have to alter nothing on drivetrain
Sorry to dig this up, but I see you ran truck?? exhaust manifolds? I have just done a 5.7 GEN111 into my 1978 C20, and had to run headers as our manifolds out here would not clear the chassis rails. I think they are the same as your GTO manifolds.
No truck type out here.
Yours is looking good. Would like a 1986-7, but expensive out here.
My truck is a 78 C20 and the 5.3 (2002) truck manifolds fit ok. Not great but ok. On mine I notched the drivers side frame rail a little bit to clear for engine vibration.
I have stock headers from an LS1 and they are MUCH different than the truck manifolds. They will not fit in my truck.
Long week... Mine is a 1973, not 78... Damn time for the weekend already.. :)Quote:
Originally Posted by Gen3 Cheyenne