Thread: Turbo 6.2 Build
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Old 01-19-2021, 10:33 AM   #302
Choda
 
Drives: Turbo 6.2
Join Date: Feb 2019
Location: Buffalo
Posts: 736
Another package showed up. Misc gaskets, arp header bolts (not sure why I bought bolts instead of studs), Crank bolt... still waiting on the valve spring tool.

I wrapped the rest of my piping and used the wire ties. Of course some broke and weren't long enough so I ordered another bag of them.

I started putting my oil pan back together and was going to install it. I looked in the oil cooler and saw a small piece of metal. This makes sense because the motor destroyed itself. I played it safe and ordered a new one from amazon. $220 freaking dollars!

Katech called me. The machining process for adding LT1 intake manifold bolt holes to LT4 heads is a bit of a mess. At first it sounded like the rear corner LT1 bolt hole would not be there because of a LT4 dowel in the heads. Then they would have to machine a dowel hole over an existing LT4 bolt hole for the LT1 dowel. I was pretty confused and worried that the end result would be heads that I could not torque LT4 or LT1 manifolds down. Which is a huge problem, esp for FI. Another worker from Katech reached out to me and said the corner LT1 hole will be machined but because it shares the existing dowel hole, installing that bolt must be taken with care. OK, that's fine. He also said I could omit the LT1 dowel machining that would overlay the LT4 bolt hole.

So after a lot of back and forth, I am going to have all of the LT4 and LT1 bolt holes in my LT4 heads. If anyone is thinking about doing this in the future, it might be worth having the LT4 dowel hole welded shut, then having the bolt hole machined. The dowel is for the factory lt4 blower. The only reason I went this route was because I did not want to use the ICT billet adapter plates or buy a $2,000 intake manifold. I'm hoping I can bolt my manifold down with no issues. I am thinking the worst case is I have to use a longer bolt for that rear corner.... I don't know.

I also checked their site and the last note on this page tells about the overlining holes. I do not remember seeing this originally.

The katech wet sump pumps were supposed to be completed last week but didn't. They are due to be completed this week. I'm not to happy with the time frames for the heads and oil pump from Katech. I'm hoping their finished products change my mind.
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2016 Twin Turbo Camaro SS - 968hp/970tq 8.9@153
2018 LTZ Z71 Redline Silverado - 381hp/420tq 13.8@100
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