96capricemgr

iTrader: (1)

I was thinking the damage looked like the head came off first too.
Why did it even have aftermarket valves in it?

Kooljames20

iTrader: (9)

a guy in texas did the head work and everything and put the valves in he said they are severe duty stainless swirl polished and under cut stems

64post

iTrader: (5)

Next time? Ferrea 6000 series. The heads don't fall off. There are lots of cheaper offshore made stainless valves out there, beware.

Kooljames20

iTrader: (9)

okay ill have to get everything myself this time

LS1-450

iTrader: (33)

Once again, valve float. You better check those springs b4 it happens again.

In regards to being asked about when to change springs; call your spring supplier or manufacturer for confirmation.

squirlNUTZ

Patriot spring strikes agin? And bad valves? How is the shop or person if you can that did the head work?
Sorry for your loss

RonSSNova

iTrader: (3)

Well, Manley makes a Severe Duty Stainless valve.
Sometimes the manufacturer name is stamped on the stem up above the keeper grooves.

My AFR heads had Ferrea valves. Rat motor.

Ron

saccitycorvette

iTrader: (3)

Maybe floated the valve and it hit the piston snapping the head off?

Jimbo1367

In his sig, it states LS3 heads. Most people won't run aggressive ramps/lobes with solid(L92) valves. Having a HD-SS valve that might poss. be even heavier isn't a good thing. I'd contact who set up the heads/spec'd the cam.

Gray86hatch

iTrader: (83)

I would put stock ls3 valves in it. Get a quality spring.

Make sure the valve is not close to the piston.

Also make sure the rod is not bent after the valve hit it.

Tim

thompson

iTrader: (4)

I hate that you had the problems with the set up, Let us know if we can help you with something to get you on the road again. We have our TMS Stainless valves and great high boost short blocks all with a 1 year warranty to help with the concern of having this not happen to you again. Give us a call and we can get you on the road in no time.

squirlNUTZ

Thompson has great pricing and customer service.
Who did the work on your set up OP?

Kooljames20

iTrader: (9)

A guy in Texas did the work to the heads and he's going to help get it fixed. I just have to pay to get the actual head fixed hes getting me a new rod and piston. Also I don't think it was valve float or a ptv clearance problem because there isn't any other marks on the other pistons at all. And I called Thompson on a short block or boost you guys had on here I'm going to fixed this engine all up and then sale it and do a turbo build.

Kooljames20

iTrader: (9)

I'm getting a new piston and rod assembly

Kooljames20

iTrader: (9)

Manley does sound familiar I'm thinking that's what he put in there

Kooljames20

iTrader: (9)

Also the build only has 3-4k miles on it so I don't think it's parts being worn out yet

Gray86hatch

iTrader: (83)

just buy a new head. It is not worth even trying to fix that one. A ls3 head is about $325 and then you have 1/2 the new valves

Tim

Kooljames20

iTrader: (9)

Ok I'll probably do that then and see if the guy that did the heads the first time can port and mill it again

thompson

iTrader: (4)

It looks like you have a great plan in motion. Let us know if we can help you in any way.

mchicia1

iTrader: (5)

Not saying this is what caused your issue, but you'd be wise to select a better spring than these when you get it back together. Patriots are known to cause issues.

Good luck.