Well I finally got around to my long planned 4.9L project. Last year I secured a very good condition 68K mile engine and 4T60e. I heard it run and it sounded great but you never know with an old engine. This is the first time that I had the valve covers off and so far so good, They look super clean with no crud or sludge.
Decided to replace the water pump as its better to do it now than later but that means also replacing the timing cover gasket. When you pry off an old pump the cover can move. If it does coolant will enter the engine so tomorrow off goes the balancer and timing cover. Also decided to do a clean up and there has been some progress. The challenge is to make the engine look nice as th 4.9L engine can look cluttered.
After doing a few 3800SC swaps and another that is prepped and ready in my garage, I decided to try a 4.9L swap. Why.
1. Good engines and transmissions can be found very inexpensive. Paid $600 for this powertrain. Swap parts are also cheap and off the shelf.
2. They make great highway cruisers and can get 30 hwy MPG.
3. This engine will go in my convertible project and since the engine cruises at 65 mph at about 1700RPM it should be quiet on the long distance trips.
4. The engine is way better than stock and I never did the swap
Here are a few pictures. Just getting started but as we progress we will post more.






Must say it looks clean in there. Leakdown test reads perfect. I am expecting good things

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" THE BLACK PARALYZER" -87GT 3800SC Series III engine, custom ZZP /Frozen Boost Intercooler setup, 3.4" Pulley, Powerlog manifold, Northstar TB, LS1 MAF, 3" Flotech Afterburner Exhaust, Autolite 104's, MSD wires, Custom CAI, 4T65eHD w. custom axles, HP Tuners VCM Suite.
"THE COLUSSUS"
87GT - ALL OUT 3.4L Turbocharged engine, Garrett Hybrid Turbo, MSD ign., modified TH125H
" ON THE LOOSE WITHOUT THE JUICE "

[This message has been edited by Dennis LaGrua (edited 07-09-2014).]

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" THE BLACK PARALYZER" -87GT 3800SC Series III engine, custom ZZP /Frozen Boost Intercooler setup, 3.4" Pulley, Powerlog manifold, Northstar TB, LS1 MAF, 3" Flotech Afterburner Exhaust, Autolite 104's, MSD wires, Custom CAI, 4T65eHD w. custom axles, HP Tuners VCM Suite.
"THE COLUSSUS"
87GT - ALL OUT 3.4L Turbocharged engine, Garrett Hybrid Turbo, MSD ign., modified TH125H
" ON THE LOOSE WITHOUT THE JUICE "

That was my story. A 93 Deville, loaded up with red leather and the works and only 120K kms on it. The engine was clean.

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[This message has been edited by Arns85GT (edited 07-10-2014).]

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" THE BLACK PARALYZER" -87GT 3800SC Series III engine, custom ZZP /Frozen Boost Intercooler setup, 3.4" Pulley, Powerlog manifold, Northstar TB, LS1 MAF, 3" Flotech Afterburner Exhaust, Autolite 104's, MSD wires, Custom CAI, 4T65eHD w. custom axles, HP Tuners VCM Suite.
"THE COLUSSUS"
87GT - ALL OUT 3.4L Turbocharged engine, Garrett Hybrid Turbo, MSD ign., modified TH125H
" ON THE LOOSE WITHOUT THE JUICE "