Cadillac CTS-V Forum banner
1 - 20 of 30 Posts

·
Premium Member
Joined
·
4,401 Posts
I think you got your money out of this block. 😀 It would be pretty exciting to be shopping for a new shortblock setup.....oh the possibilities!
 

·
Registered
2011 thunder grey coupe a6 recaros.
Joined
·
1,079 Posts
That’s a hell of a run, are you going to do a full on build now or just go back stock?
 

·
Registered
Joined
·
4,437 Posts

·
Registered
Joined
·
38 Posts
Discussion Starter · #8 ·
No indication. In fact it ran like new with no oil burn. In fact, it broke the valve during start up. I had several basic mods 2.5 pulley, ported tb, weaponx heat exchanger, borla exhaust and Cai. With aggressive tune. All done around 40k. I plan to rebuild it as a 416 with stage 2 cam. Plan to put another 300k on it.
 

·
Premium Member
Joined
·
4,401 Posts
No indication. In fact it ran like new with no oil burn. In fact, it broke the valve during start up. I had several basic mods 2.5 pulley, ported tb, weaponx heat exchanger, borla exhaust and Cai. With aggressive tune. All done around 40k. I plan to rebuild it as a 416 with stage 2 cam. Plan to put another 300k on it.
I was going to say that the block would still be good, you caught it quickly when it failed. New heads for sure, but you probably didn't even score the cylinder wall.
 
  • Like
Reactions: Teh V and mememe123

·
Premium Member
Joined
·
3,022 Posts
Stock stroke would help in going another 300k. I’m not as knowledgeable as some, but I’ve heard the 4” stroke doesn’t have the longevity. I might be wrong, and maybe I’m just thinking older ls stuff, with shorter sleeves.
 
  • Like
Reactions: Blades1_99

·
Registered
Joined
·
464 Posts
If the piston isn’t attached to the rod, how do you know the rod or rod bolt didn’t break first and cause the valve breakage? I’m thinking a broken rod more likely to cause valve damage rather than a broken valve causing a rod to break.
 

·
Registered
2012 Cadillac CTS-V Sedan WDT
Joined
·
1,782 Posts
Stock stroke would help in going another 300k. I’m not as knowledgeable as some, but I’ve heard the 4” stroke doesn’t have the longevity. I might be wrong, and maybe I’m just thinking older ls stuff, with shorter sleeves.
You are correct. The added stress/strain due to the strokers rod angle creates a less reliable assembly. Hence why I went 388.
 

·
Registered
Joined
·
38 Posts
Discussion Starter · #16 ·
I think you may be right. The rod mayhap broke first taking out the valve. Good advice on the stroker. 388 may be the solution. Strange thing is that I can turn over the motor by hand and no noise from the connecting rod. But it still pushes the piston up if I push it down by hand. Can't hear the rod touching any metal. Will pull it in the next couple of days. Hopefully the block is OK.
 

·
Registered
Joined
·
4,437 Posts
1 - 20 of 30 Posts
Top