Turbo 6.2 Build - Page 20

Umbriel · 12-01-2020, 10:06 AM

Quote:

Originally Posted by Joshinator99

I'm definitely less than $4500 all in for my Mast Black Label LT heads. Not a lot cheaper, of course. But I liked that the aftermarket heads do a thicker deck too, not to mention great flow rates.

Where did you purchase them so I can do some window shopping?

Joshinator99 · 12-01-2020, 10:33 AM

Quote:

Originally Posted by Umbriel

Where did you purchase them so I can do some window shopping?

Here you go:
https://www.mastmotorsports.com/prod...-cylinder-head

Umbriel · 12-01-2020, 01:50 PM

Quote:

Originally Posted by Joshinator99

Here you go:
https://www.mastmotorsports.com/prod...-cylinder-head

Thank you!

ZO6Ted · 12-01-2020, 08:16 PM

Quote:

Originally Posted by KingLT1

Good choice...I definitely suggest reworked heads with new seats, guides, and valves based on reports I have seen from guys like Brett and Ryan. Seems to be a fair amount of valve issues out there with boost on this platform...and even some NA with larger cams spinning higher rpm.

So new stock LT4 heads are not recommended for say a 20-22 lbs weekend driver? Are PRC aftermarket ok? They are priced pretty decent I see. Less concerned about flow as I'm doing twins.

KingLT1 · 12-01-2020, 09:34 PM

LT4 heads are for sure better then LT1. They are rotocast aluminum which is stronger and also have stronger titanium intake valves. I also believe they seem to have less core shift issues but I will admit I haven't really seen a lot of info posted about using them as a upgrade for LT1 cars. Part of that could be due to the different intake bolt pattern.

Choda · 12-04-2020, 12:29 PM

Katech called letting me know they have to add additional options to my purchase like valve seals and valve reconditioning which is:

-Wire wheel valves
-Polish valve stems
-Measure valve guides
-Machine valve face

The katech head job is now up to $650.

I received the motion race works catch can, valve cover breathers and oil scavenge pump. I tore down and cleaned the VR1100 to a short block. This thing looks beautiful. I keep looking at this VR1000 cam and telling myself to sell it to someone with a procharger and buy a custom turbo cam. When cleaning the oil pan, I found something interesting about my oil return set up. I'll get some pics when I get back in the garage to help explain it.

Choda · 12-07-2020, 07:40 AM

Turbo oil return into the pan update.

https://youtu.be/XMCfDv2KFtI

Found it, its for a ctsv pcv system. I wonder how its hooked up from the factory. Almost like constant drain for a catch can

https://www.gmpartsdirect.com/oem-pa...-tube-12670602

ZO6Ted · 12-21-2020, 12:23 PM

Posted on TSP now.

DISCLAIMER: There is a known issue with factory GM LT cylinder head castings causing the factory valve seats to fall out. A valve seat failure will result in a damaged head and possibly a catastrophic, irreparable engine failure. It is common enough to warrant discretion when using factory GM LT cylinder head castings. Texas Speed and Performance assumes no liability in regards to this issue since it is a factory defect. Due to this, we highly recommend purchasing a set of our aftermarket LTx cylinder heads.

Umbriel · 12-21-2020, 01:46 PM

Quote:

Originally Posted by ZO6Ted

Posted on TSP now.

DISCLAIMER: There is a known issue with factory GM LT cylinder head castings causing the factory valve seats to fall out. A valve seat failure will result in a damaged head and possibly a catastrophic, irreparable engine failure. It is common enough to warrant discretion when using factory GM LT cylinder head castings. Texas Speed and Performance assumes no liability in regards to this issue since it is a factory defect. Due to this, we highly recommend purchasing a set of our aftermarket LTx cylinder heads.

Yeah this isn't what I want to see with my car about to go in for a tune with twin turbos on stock heads.

parish8 · 12-21-2020, 02:30 PM

And then you have some broken exhaust valves like I had that took out my motor. I am hoping the 5.3 heads do not have the same issues. If I was doing an lt I would either do a set of stock lt4 heads or some aftermarket heads.

Umbriel · 12-21-2020, 02:50 PM

Quote:

Originally Posted by parish8

And then you have some broken exhaust valves like I had that took out my motor. I am hoping the 5.3 heads do not have the same issues. If I was doing an lt I would either do a set of stock lt4 heads or some aftermarket heads.

LT4 heads would be great but I bought an intake for port injection and it is an LT1 intake. I need to look into the cheapest set of aftermarket LT1 heads with stronger valves.

Sent from my SM-N986U using Tapatalk

Joshinator99 · 12-21-2020, 02:59 PM

Quote:

Originally Posted by Umbriel

LT4 heads would be great but I bought an intake for port injection and it is an LT1 intake. I need to look into the cheapest set of aftermarket LT1 heads with stronger valves.

Sent from my SM-N986U using Tapatalk

I’ve had good luck with my Mast Black Label LT1 heads so far. Didn’t get a chance to push them much this year (99 lbs/min MAF) and ran out of fuel, but will probably add port injection this winter and then really give them a beating.

KingLT1 · 12-21-2020, 03:22 PM

Quote:

Originally Posted by Umbriel

LT4 heads would be great but I bought an intake for port injection and it is an LT1 intake. I need to look into the cheapest set of aftermarket LT1 heads with stronger valves.

Sent from my SM-N986U using Tapatalk

I believe Katech can drill them to accept a LT1 intake manifold.

Umbriel · 12-21-2020, 04:19 PM

Quote:

Originally Posted by KingLT1

I believe Katech can drill them to accept a LT1 intake manifold.

Interesting

Sent from my SM-N986U using Tapatalk

12-01-2020, 09:34 PM	#271
KingLT1 Drives: 2016 1SS NFG A8 Join Date: Aug 2017 Location: 46804 Posts: 6,793	LT4 heads are for sure better then LT1. They are rotocast aluminum which is stronger and also have stronger titanium intake valves. I also believe they seem to have less core shift issues but I will admit I haven't really seen a lot of info posted about using them as a upgrade for LT1 cars. Part of that could be due to the different intake bolt pattern. __________________ 2016 NFG 1SS A8 Options-2SS Leather/NPP Perf. mods-Whipple 2.9/Fuel System/Flex Fuel/103mm TB/Rotofab Big Gulp/Cat Deletes/Corsa NPP Per. times- 10.5 @ 137 w/ 1.8 60ft Full weight on 20's 1200DA

12-04-2020, 12:29 PM	#272
Choda Drives: Turbo 6.2 Join Date: Feb 2019 Location: Buffalo Posts: 702	Katech called letting me know they have to add additional options to my purchase like valve seals and valve reconditioning which is: -Wire wheel valves -Polish valve stems -Measure valve guides -Machine valve face The katech head job is now up to $650. I received the motion race works catch can, valve cover breathers and oil scavenge pump. I tore down and cleaned the VR1100 to a short block. This thing looks beautiful. I keep looking at this VR1000 cam and telling myself to sell it to someone with a procharger and buy a custom turbo cam. When cleaning the oil pan, I found something interesting about my oil return set up. I'll get some pics when I get back in the garage to help explain it. __________________ 2016 Turbo Camaro SS - 800hp/900tq 9.7@146 2018 LTZ Z71 Redline Silverado - 381hp/420tq 13.8@100 Last edited by Choda; 12-06-2020 at 10:29 AM.

12-07-2020, 07:40 AM	#273
Choda Drives: Turbo 6.2 Join Date: Feb 2019 Location: Buffalo Posts: 702	Turbo oil return into the pan update. https://youtu.be/XMCfDv2KFtI Found it, its for a ctsv pcv system. I wonder how its hooked up from the factory. Almost like constant drain for a catch can https://www.gmpartsdirect.com/oem-pa...-tube-12670602 __________________ 2016 Turbo Camaro SS - 800hp/900tq 9.7@146 2018 LTZ Z71 Redline Silverado - 381hp/420tq 13.8@100 Last edited by Choda; 12-07-2020 at 07:52 AM.

12-21-2020, 02:30 PM	#276
parish8 Drives: 17 SS a8 Join Date: Feb 2010 Location: omaha Posts: 1,678	And then you have some broken exhaust valves like I had that took out my motor. I am hoping the 5.3 heads do not have the same issues. If I was doing an lt I would either do a set of stock lt4 heads or some aftermarket heads. __________________ dropped a valve in the 6.2. now running a drop in rods and piston 5.3 best et 5.83@121 with the 5.3 http://www.camaro6.com/forums/showthread.php?t=465472

12-21-2020, 12:23 PM	#274
ZO6Ted Old badass Drives: 14GMC 2.9 16GMC Turbos 2020Silv.6.2 Join Date: Mar 2020 Location: Arlington Tx Posts: 238	Posted on TSP now. DISCLAIMER: There is a known issue with factory GM LT cylinder head castings causing the factory valve seats to fall out. A valve seat failure will result in a damaged head and possibly a catastrophic, irreparable engine failure. It is common enough to warrant discretion when using factory GM LT cylinder head castings. Texas Speed and Performance assumes no liability in regards to this issue since it is a factory defect. Due to this, we highly recommend purchasing a set of our aftermarket LTx cylinder heads.

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