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1968 c30 "Papa Smurf" prerunner build. links, beams, and turbo

Overview Gallery Discussion
I prob missed it but why a 4.8 and not a 5.3 or 6.0 or even a 6.2L? I'm guessing you had the 4.8 or it was cheap/free.
 
Truckman4life said:
I prob missed it but why a 4.8 and not a 5.3 or 6.0 or even a 6.2L? I'm guessing you had the 4.8 or it was cheap/free.
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Couple of reasons.
1.) bought the complete motor ecu and harness for $200
2.) because the 4.8 has a shorter stroke it actually can get in rpm quicker which should in return build and stay in boost better then larger displacement. I'm not building a drag car so going boosted I was after least amount of lag and what would keep me in the boost the best(only reading and talking to other boosted 4.8/5.3 turbo motor owners) With that I also raised the compression slightly over stock by decking the heads and staying with a forged flat top piston. Since I'll be running e85 for fuel not worried about cylinder detonation and the extra compression. That should also help keep this motor running in the boost when on it. All of this for me is theory and ideas from research and talking to others who have built turbo ls motors. I have an exact idea on how I want this motor to work and run and from all of that I think the combo I've put together will get me where I want to be.
Only way to find out for sure is to get it running and see what happens.
3.) And because who else has a turbo 4.8ls in there first gen beamed c10 prerunner?
 
Mr.Clean said:
Couple of reasons.
1.) bought the complete motor ecu and harness for $200
2.) because the 4.8 has a shorter stroke it actually can get in rpm quicker which should in return build and stay in boost better then larger displacement. I'm not building a drag car so going boosted I was after least amount of lag and what would keep me in the boost the best(only reading and talking to other boosted 4.8/5.3 turbo motor owners) With that I also raised the compression slightly over stock by decking the heads and staying with a forged flat top piston. Since I'll be running e85 for fuel not worried about cylinder detonation and the extra compression. That should also help keep this motor running in the boost when on it. All of this for me is theory and ideas from research and talking to others who have built turbo ls motors. I have an exact idea on how I want this motor to work and run and from all of that I think the combo I've put together will get me where I want to be.
Only way to find out for sure is to get it running and see what happens.
3.) And because who else has a turbo 4.8ls in there first gen beamed c10 prerunner?
Click to expand...

Excellent answer! #3 FTW!!
 
Mr.Clean said:
Couple of reasons.
1.) bought the complete motor ecu and harness for $200
2.) because the 4.8 has a shorter stroke it actually can get in rpm quicker which should in return build and stay in boost better then larger displacement. I'm not building a drag car so going boosted I was after least amount of lag and what would keep me in the boost the best(only reading and talking to other boosted 4.8/5.3 turbo motor owners) With that I also raised the compression slightly over stock by decking the heads and staying with a forged flat top piston. Since I'll be running e85 for fuel not worried about cylinder detonation and the extra compression. That should also help keep this motor running in the boost when on it. All of this for me is theory and ideas from research and talking to others who have built turbo ls motors. I have an exact idea on how I want this motor to work and run and from all of that I think the combo I've put together will get me where I want to be.
Only way to find out for sure is to get it running and see what happens.
3.) And because who else has a turbo 4.8ls in there first gen beamed c10 prerunner?
Click to expand...
Gotcha! Just like destroking? a motor for circle track I think. To get it to rev faster. Can't wait to see video of this thing or better yet bring it out to the St. Anthony Dunes when you are done.
 
Truckman4life said:
Gotcha! Just like destroking? a motor for circle track I think. To get it to rev faster. Can't wait to see video of this thing or better yet bring it out to the St. Anthony Dunes when you are done.
Click to expand...

St. Anthony's is on the list.

I have dreams of a West coast dune tour once this thing is done. 2-3 weeks to hit glamis pismo dumont and St. Anthonys.

I'll start planning once this thing is done
 
Buddy drove his 66' over Saturday to help me build my motor. Things were going good until we found out I didn't order rod bearings. So rod bearings on the way. Bottom end is together. And pistons and valve train are prepped and ready to go. Try again this week.

IMG_0086.JPG

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do the main cross bolts use an o ring to seal to the block.
good to see the power coming together Nate!
 
76zimmer said:
do the main cross bolts use an o ring to seal to the block.
good to see the power coming together Nate!
Click to expand...
No o rings. And I'm pumped to see it go together as well. Seeing some light towards the end of this tunnel
 
I think that is the first time I've ever looked at an LS block without the heads on it. :thinking:
 
I"ve only seen them on TV and mags...luckily my 99 6.0 hasn't had a reason too pull em w/ 238K on it.
 
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