Rebuilding LS2 engine
Thread Starter
Instructor
Joined: Dec 2012
Posts: 204
Likes: 3
From: Houston Tx
Rebuilding LS2 engine
Hello seeking some knowledge. I have 2005 c6 run good no issues, but I would like to have the engine refreshed it has 120k. I would like some advice where I can find a cost effective 370 or where I can take my engine. I’m not a hard core racer or anything like that but would like to add a bit more punch. I did get a hold of trick flow heads and Brian Tooley cam stage 3 cam package already. Just now seeking a short block. I’m located in Texas. Thanks for any information..
Intermediate
Joined: Jul 2017
Posts: 39
Likes: 6
From: Bel Air Maryland
Hello seeking some knowledge. I have 2005 c6 run good no issues, but I would like to have the engine refreshed it has 120k. I would like some advice where I can find a cost effective 370 or where I can take my engine. I’m not a hard core racer or anything like that but would like to add a bit more punch. I did get a hold of trick flow heads and Brian Tooley cam stage 3 cam package already. Just now seeking a short block. I’m located in Texas. Thanks for any information..
Racer
Joined: May 2014
Posts: 338
Likes: 64
From: San Diego CA
At 120,000 you're perfectly fine. No need to rebuild. Hell I put an A&A supercharger kit on mine at 160,000 
These motors are much more reliable than people think. The ones you hear about breaking are usually very high HP builds or hard racers. You won't have any issues.
These motors are much more reliable than people think. The ones you hear about breaking are usually very high HP builds or hard racers. You won't have any issues.
Last edited by VetteofSD; Jul 9, 2019 at 04:31 PM.
Race Director
Joined: Mar 2011
Posts: 13,262
Likes: 3,151
From: SW Florida
2021 C6 of the Year Finalist - Modified
The cheap route .....
Used LS3 heads (much better flowing than your LS2 heads)
Used LS3 intake manifold (much better flowing than your LS2 intake manifold)
A mild Stage 1 or 2 aftermarket cam with the LSA at 115 or 116 for good driveability
Oh, don't forget a set of headers
Used LS3 heads (much better flowing than your LS2 heads)
Used LS3 intake manifold (much better flowing than your LS2 intake manifold)
A mild Stage 1 or 2 aftermarket cam with the LSA at 115 or 116 for good driveability
Oh, don't forget a set of headers
Instructor
Joined: Jun 2018
Posts: 139
Likes: 10
Hello seeking some knowledge. I have 2005 c6 run good no issues, but I would like to have the engine refreshed it has 120k. I would like some advice where I can find a cost effective 370 or where I can take my engine. I’m not a hard core racer or anything like that but would like to add a bit more punch. I did get a hold of trick flow heads and Brian Tooley cam stage 3 cam package already. Just now seeking a short block. I’m located in Texas. Thanks for any information..
Call Jerry Aikman Aikman performance in LEANDER, TX. They just did my LS2, great build.
Le Mans Master
Joined: Dec 2005
Posts: 6,999
Likes: 1,685
From: Southeast TX
If you're on a tight budget, slap the heads on and enjoy! You'll need to upgrade the intake manifold to see the potential of the heads and cam.
If you don't mind spending a few bucks, you can put a TxSpeed 402" short block under those heads https://www.texas-speed.com/p-148-ts...ort-block.aspx. It doesn't cost much more for the extra cubes vs stock cubes and it will really up your game. Sell your good running long block to recoup some of the cost. Still need to upgrade the intake manifold too. The extra cubes will up drivability a notch also. You can save a few bucks by rebuilding your own short block, but be prepared to be "down" for weeks.
If you don't mind spending a few bucks, you can put a TxSpeed 402" short block under those heads https://www.texas-speed.com/p-148-ts...ort-block.aspx. It doesn't cost much more for the extra cubes vs stock cubes and it will really up your game. Sell your good running long block to recoup some of the cost. Still need to upgrade the intake manifold too. The extra cubes will up drivability a notch also. You can save a few bucks by rebuilding your own short block, but be prepared to be "down" for weeks.
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Race Director
Joined: Mar 2011
Posts: 13,262
Likes: 3,151
From: SW Florida
2021 C6 of the Year Finalist - Modified
There is the best idea in this whole thread !
[If] the compression is ok, you don't need to do anything internally to your engine.
What a little more power without cracking open the engine ..... install a set of headers and then get it dynotuned
[If] the compression is ok, you don't need to do anything internally to your engine.
What a little more power without cracking open the engine ..... install a set of headers and then get it dynotuned