When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
My original post was all I was able to see. I'm not a mechanic. The motor is in the car under the cowl so I can't see much. Just sharing my bad experience. I was pleased to hear the sleeve is an option.
It's a bad time of the year from a work standpoint so I don't have much extra time to look at it further. I had ordered a lift for the garage that I was hoping to get in December but it came in late January so it's just taking space in the garage (no time to install it). Since it wasn't coming I started to disassemble the car.
Your picture quality is also great showing LITTLE chance of a cracked wall ?
My first guess as to where the metal came from was an aftermarket Air Door Butterfly/Shaft screw.
Second guess was spark plug material ?
I have seen this happen before with similar piston/head/wall damage though there are DIFFERENT marks with what I have observed.
Could you take a picture of the head/piston at TDC and post ?
What kind of metal/where it came from/how it entered the engine would be a GREAT help to LS_1 Tech members, another good thread above.
Thus a contest with the winner receiving a FREE set of E-3 Sparkplugs, the choice of MANY TFD teams
Lance, BTW with a lite hone that wall could "clean"
Well I finally installed my lift and removed the engine. I left the car outside for quite a few months so I hope there is no damage due to the moisture.
Doesn't look like there is any more damage than I originally thought. In fact the cylinder wall doesn't appear to have any damage. So I assume the piston will need to be replaced. Hopefully the cylinder head can be repaired. I'll bring it down to the builder this wek or next week. I want to build an engine crate to bring it down.
I'm not sure but I may try a different top end. Thought about going with ported factory ls7 heads.
Big Hammer, Do you think that the combination you suggest is not significantly different than advance induction 280 or Reher-Morrison ls7 heads with the Tony Mamo ported MSD intake? The engine will be around 12:1 compression and probably the maximum rpm that I am willing to go is 7,200-7,300. It just seems weird that that so many love the ls3 heads now. I have seen the threads that it has a lot to do with the intakes. thanks
Big Hammer, Do you think that the combination you suggest is not significantly different than advance induction 280 or Reher-Morrison ls7 heads with the Tony Mamo ported MSD intake? The engine will be around 12:1 compression and probably the maximum rpm that I am willing to go is 7,200-7,300. It just seems weird that that so many love the ls3 heads now. I have seen the threads that it has a lot to do with the intakes. thanks
just Stock ls7 heads have a bad rap for valve guides and destroying engines. They’re a great design with poor execution. GMPP ls3 heads are just cheap and reliable and love two things. Cubes and RPM. Good NA heads for the money but no not the worlds best performing Head in the world. The ls3 flange does have good intake selection though
GMPP LS3 heads are a rip off. Seen them in car craft magazine.... they only made 560 horses on a 404ci motor. Weak as water. You'll be better off sending some LS3 heads or LS7 heads to Frankenstein. Skip the LS3 boat and go Frankenstein LS7 heads.
GMPP LS3 heads are a rip off. Seen them in car craft magazine.... they only made 560 horses on a 404ci motor. Weak as water. You'll be better off sending some LS3 heads or LS7 heads to Frankenstein. Skip the LS3 boat and go Frankenstein LS7 heads.
i could make more Na power with GMPP ls3’s than I could with a tfs 235
and the GMPP heads can make power people just don’t know how to use them. They make similar power to most ported ls3 heads.
If I didn't KNOW better I would agree with you .
My boy Mike has CNC L92s on his 402ci LS2. Car was stout. Ran 10.8s @ 126-127 mph with a 1.42 60 ft. He ditch those heads and went tfs 235s out the box. Car went 10.4 at 132mph on a 1.55 60ft. New slicks resulted in a 10.3 at the track at 133 mph. No dreaming for me.... REALITY WINS.
If I didn't KNOW better I would agree with you .
My boy Mike has CNC L92s on his 402ci LS2. Car was stout. Ran 10.8s @ 126-127 mph with a 1.42 60 ft. He ditch those heads and went tfs 235s out the box. Car went 10.4 at 132mph on a 1.55 60ft. New slicks resulted in a 10.3 at the track at 133 mph. No dreaming for me.... REALITY WINS.
Ls3 heads have no velocity which hurts them at the track. Cfm numbers is not everything like people think it is. The intake to exhaust ratio also suffers as well.
Ls3 have piles of velocity at high rpm and that’s where hp is made. Not the heads fault that people make their engines run out of breath over 6000 rpm like a bunch of gomers
well why do most LS3 headed 4XX ci runs like poop at the track ? Not go call the guy name but it's a SS on board here but he can't get pass 123 mph with a 6 speed. Car is LS3 headed 408ci on 28 inch slicks.
well why do most LS3 headed 4XX ci runs like poop at the track ? Not go call the guy name but it's a SS on board here but he can't get pass 123 mph with a 6 speed. Car is LS3 headed 408ci on 28 inch slicks.
because he has no clue what he’s doing. An ls3 is a man Head. Not a beginner Head like a tfs 235. You have to know how to use them
Beginner heads are Mast. Ls3 heads are budget performance heads. TFS heads are serious business. Tooley just had a 416ci on E85 run 9.8s with a 6 speed Z28, TFS 245s and a hydraulic roller.
Too bad your solid roller high revving 388ci LS3 Mast heads won't do that.
03-28-2018, 11:03 AM
Thin Wall Sleeve 
