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Old 12-17-2020, 06:02 PM   #70
sam in vista
Registered User
 
Join Date: Aug 2012
Location: vista,CA
Posts: 46
Re: 75 GMC sierra classic face lift and conversion to short bed

Im back, its been while
but never gave up on my beast
we had lot of progress on project which Im going to post gradually
I had to move the car to other garage since the car has been slept for more than 1 year.





we ended up to buy a LS1 engine which was belong to 04 GTO
fortunately the engine was so clean and low mileage, but the jackyard guys didn't know how to cut the wires and they messed with it



so the wires missed the cabin part and we had to repair it
In addition they lost the pedal and key which was huge deal for us
so we had to prioritize below jobs
1-remove VAT
2-since we didnt have pedal and cabin wires we had to convert from DBW to DBC
thanks god we got the blue green ECM which has the DBC chip
but we faced other issues as well

my truck is full option and wanted to keep the AC, the GTO compressor is down the engine and we had to relocate it because was so tight in chassis



so I bought the LS AC bracket and moved up
another issue we faced was the oil pan, the GTO has front swamp oil pan which wont fit on truck, therefore I bought the GM Performance rear swamp oil pan





and last was the headers and engine mount bracket
luckily, speed engineering have well and fit designed for my application


and here how it looks on engine






in next post I dig in deep more about difficulty of repairing the wires and throttle body conversion
Attached Images
     

Last edited by sam in vista; 12-18-2020 at 09:48 AM.
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