Well, I'm unfortunately reaching out for short block recommendations after an incident with a tuner. Cracked a ring land on cylinder 5, which then led to a cracked sleeve and coolant entering while the car was being tuned. Anyways, my original plan for this car was roughly 600 whp with a mild cam, heads and intake (currently has a Katech Touring cam, Katech ported/polished heads, Johnson 2110 lifters, new oem rockers, 2" Kooks headers, MSD intake manifold, Haltech intake and Corsa extremes). I'm more into turns than I am straight line speed and 600 whp in a 3200lb car is PLENTY for that.

Options I'm looking at...
-Trying to find another LS7 block which I would then have sleeved. Running either the stock Ti rods again (car has 23k miles on it, I like them for their lightweight...I know they're not well loved due to the coating issues) and the stock crank or ditching that for a forged setup. Diamond pistons would go in as well.
-LSR short block built by LME. Probably WAY overkill for a 600 whp NA car. Looking at this option to go for the "bulletproof" type setup.
-5.3 sleeved to 427 with Darton Sleeves and running either the stock crank/rods or ditching them to run a forged setup...I'm not going to be running any boost or have any plans to ever run boost...which makes me think this isn't a great option but I'm open to opinions.
-Katech street attack setup...LS7 block with forged components but not sleeved and similar price to the LME LSR blueprinted motor.


I'd love to hear thoughts and opinions here...I was hoping to have my car back and enjoying at this point. I never planned to be needing to research this while the original goal was a safe/mild build

 

I personally would go the LME route with the bulletproof setup for reliability.

You can build N/A and go up as high as you want on the horsepower or you have the flexibility to add boost later if you change your mind.

https://latemodelengines.com/product...27-1400hp-copy

 

I have a full crate motor coming out of my brothers z06 I totaled not to long ago just waiting for it to come back from insurance. Has a 434 sleeved ls7 with most of the paper work from previous owner. I can sell as long block only or full crate engine radiator fans ac condenser engine harness ecu drysump intake tb varam cold air Mighty Mouse catch can stock exhaust manifolds accessories etc

made 575whp on cali 91 with 19 degrees peak timing with stock intake and TB around 11.3 comp I’m sure a ported msd and 103 would be over 600whp especially running a good fuel like e85 safer and worth about 10whp alone can set it up as a flex aswell to utilize both gasoline and ethanol.

 

I think he had more than 3 last time i looked, but he always has a bunch of new GM stuff for sale