Short Block suggestions
Thread Starter
Racer
Joined: Jun 2016
Posts: 336
Likes: 15
From: outside new orleans Louisiana
Short Block suggestions
my c6z ls7 has a bad cylinder. what are your suggestions on best short block combos. i will stay boosted but dont ever plan to go much over 1k hp but if spend money i wanted rock solid
Team Owner
Joined: Nov 2007
Posts: 24,035
Likes: 2,342
From: Gilbert AZ
Budget?
Stuck on certain cubes? Certain bore size?
I would do a nice LSX or LS Next 390ci at ~10.5 compression. Ultra rods, dragon slayer or magnum crank, etc. Should be able to do one of those for around $8500-9000.
Stuck on certain cubes? Certain bore size?
I would do a nice LSX or LS Next 390ci at ~10.5 compression. Ultra rods, dragon slayer or magnum crank, etc. Should be able to do one of those for around $8500-9000.
Thread Starter
Racer
Joined: Jun 2016
Posts: 336
Likes: 15
From: outside new orleans Louisiana
im expecting it to be around 10k. i really want to keep the 427 jsut for Z06 iconic stand point.
was definetly going to go dragon slayer crank and i beam rods. Not sure on pistons, and does anyone build the ls next block in short block form? still up in air on the iron lsx
was definetly going to go dragon slayer crank and i beam rods. Not sure on pistons, and does anyone build the ls next block in short block form? still up in air on the iron lsx
Team Owner
Joined: Nov 2007
Posts: 24,035
Likes: 2,342
From: Gilbert AZ
Call LME, HPR or Thompson with your budget and goals, talk with them, and do what they say IMO.
Depending what you are expecting out of $10k, that should get you there. My short block alone was $8700ish 5+ years ago. That was block, pistons, rods, crank. Once you add oil pump, covers, cam, lifters, gaskets, studs you surpass $10k really quick.
There are the new aluminum LS blocks (concept one or something) that look promising but no one is really running them yet. The LSX is the tried true and proven work horse. Can't go wrong with it except for the weight, but anything 1000+ isn't going to be an auto-x or road race car.
Getting a RED sleeved block is also an option. If your block is repairable that is a decent option. Gotta decide on if 6 bolt heads are in your future or part of the build. For 1000+ they should be, or atleast a solid thick deck aftermarket head.
Depending what you are expecting out of $10k, that should get you there. My short block alone was $8700ish 5+ years ago. That was block, pistons, rods, crank. Once you add oil pump, covers, cam, lifters, gaskets, studs you surpass $10k really quick.
There are the new aluminum LS blocks (concept one or something) that look promising but no one is really running them yet. The LSX is the tried true and proven work horse. Can't go wrong with it except for the weight, but anything 1000+ isn't going to be an auto-x or road race car.
Getting a RED sleeved block is also an option. If your block is repairable that is a decent option. Gotta decide on if 6 bolt heads are in your future or part of the build. For 1000+ they should be, or atleast a solid thick deck aftermarket head.
Thread Starter
Racer
Joined: Jun 2016
Posts: 336
Likes: 15
From: outside new orleans Louisiana
my block is good, it actually wasn't catastrophic yet, caught it ahead of time.
what are my limits of a rebuilding the ls7 block with dragonslayer cranks callies rods and diamond pistons?
what are my limits of a rebuilding the ls7 block with dragonslayer cranks callies rods and diamond pistons?
Team Owner
Joined: Nov 2007
Posts: 24,035
Likes: 2,342
From: Gilbert AZ
Without sleeves, ~800ish IMO. But even then one bad tank of gas, and it can pop.
Heads won't stay down much past 850 anyways.
Now with sleeved ls7, thick heads, l19 studs, 1000 is no issue. But just pistons/rods, I wouldn't mess with anything much past 800, and even that is risky.
Heads won't stay down much past 850 anyways.
Now with sleeved ls7, thick heads, l19 studs, 1000 is no issue. But just pistons/rods, I wouldn't mess with anything much past 800, and even that is risky.
Thread Starter
Racer
Joined: Jun 2016
Posts: 336
Likes: 15
From: outside new orleans Louisiana
i was pushing 700-750 now so that maybe why it begining to shut out. i was going to leave it alone for a while but if i gotta buy short block i might as well pulley down my v3ti and max it out.
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Safety Car
Joined: Dec 2010
Posts: 4,150
Likes: 379
From: Detroit
I'm personally doing a LS Next Iron because I know a Dart dealer but if not I was gonna do a LSA block. Already have the Dragonslayer, Ultra h rods, and custom Diamond pistons. Still trying to decide on heads.
Melting Slicks
Joined: Feb 2013
Posts: 2,034
Likes: 111
LSA is interesting option but I went with LSX block built by LME. I know a guy with ls9 block and turbo making 1,100whp for awhile now without issue but that seems unusual.
no matter what you end up doing if you get a good engine builder prepare to be patient. The good guys are always backed up and it takes forever usually to get everything together.
no matter what you end up doing if you get a good engine builder prepare to be patient. The good guys are always backed up and it takes forever usually to get everything together.
Last edited by neverstop; May 23, 2017 at 12:35 AM.