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Old 12-17-2007, 04:47 PM
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Default ls7 rods

I have heard tons of people talking about these titanium rods being weak and what-not, but I have YET to hear of a single failure of one to this day. Does anyone know of any failures, or what types of power that these are proven up to so far? I was excited when they first came out when they were less than 100 bucks a piece, but now they are over 400 each...
Old 12-17-2007, 04:55 PM
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The day I went to buy a set from the local dealership is the day they went up in price. I haven't seen any fail yet and still want a set. I just don't have the money right now. Katech just came out with direct replacement rod bolts for them too.
Old 12-17-2007, 05:26 PM
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whats so special about them-apart from the price-

when they say titanum how much of a percentage is it-

i also have never heard of a failure but seen a bit of interest from others who want to but them-

so i just want to know whats so good about them-?
Old 12-17-2007, 05:47 PM
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Originally Posted by restoman45
I have heard tons of people talking about these titanium rods being weak and what-not, but I have YET to hear of a single failure of one to this day. Does anyone know of any failures, or what types of power that these are proven up to so far? I was excited when they first came out when they were less than 100 bucks a piece, but now they are over 400 each...
So far we have proven up to 650hp of endurance racing with them. We've never had a single failure (root cause).
Old 12-17-2007, 06:00 PM
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It is the pistons and intake valves that have been a problem.
Old 12-17-2007, 06:30 PM
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Originally Posted by See5
It is the pistons and intake valves that have been a problem.
What happens to the pistons and intake valves?
Old 12-17-2007, 06:36 PM
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Originally Posted by Katech
What happens to the pistons and intake valves?
Come on Jason-
Old 12-17-2007, 06:39 PM
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Originally Posted by See5
Come on Jason-
I'm serious. The only piston failures we have seen were caused by detonation from improper tuning. We haven't seen any intake valve problems.
Old 12-17-2007, 06:43 PM
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Originally Posted by Katech
I'm serious. The only piston failures we have seen were caused by detonation from improper tuning. We haven't seen any intake valve problems.
jason pm me a price on your rod bolts to suit the ls1 2003 model engine-

melbounre australia zip code/postal code 3033



jason-so u are saying the standard ls7 engine is bullet proof-so it just comes down to bad tunning that can really hurt them-

if u dont mind me asking=how many have u guy's hurt or seen others hurt-and what was the cause-or just bad tunning-

Thanks in advance-
Old 12-17-2007, 06:50 PM
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Originally Posted by njc.corp
jason pm me a price on your rod bolts to suit the ls1 2003 model engine-

melbounre australia zip code/postal code 3033



jason-so u are saying the standard ls7 engine is bullet proof-so it just comes down to bad tunning that can really hurt them-

if u dont mind me asking=how many have u guy's hurt or seen others hurt-and what was the cause-or just bad tunning-

Thanks in advance-

$199.99 for the rod bolts plus shipping


I never said it was bulletproof. We highly recommend forged pistons for any upgraded LS7. The failed stock pistons we have seen are usually from detonation.
Old 12-17-2007, 07:03 PM
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do you think these rods could withstand the abuse of ~8k rpms, and ~800 hp (n/a)...with a couple trips to the dragstrip a year? I think a lot of people dont realize that pound for pound, titanium is stronger than steel...
Old 12-17-2007, 07:14 PM
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I've heard from a guy that broke two connecting rods 539rwhp; but he blames my cam

The LS7 pistons were supposed to be forged....... then GM changed them just before production to cast... LS7 pistons are weaker design then LS2 pistons.
Old 12-17-2007, 07:29 PM
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Originally Posted by restoman45
do you think these rods could withstand the abuse of ~8k rpms, and ~800 hp (n/a)...with a couple trips to the dragstrip a year? I think a lot of people dont realize that pound for pound, titanium is stronger than steel...
With forged pistons?
Old 12-17-2007, 07:41 PM
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Originally Posted by Katech
$199.99 for the rod bolts plus shipping


I never said it was bulletproof. We highly recommend forged pistons for any upgraded LS7. The failed stock pistons we have seen are usually from detonation.
i stand corrected-
Old 12-17-2007, 10:53 PM
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Originally Posted by njc.corp
whats so special about them-apart from the price-

when they say titanum how much of a percentage is it-

i also have never heard of a failure but seen a bit of interest from others who want to but them-

so i just want to know whats so good about them-?

My custom 4.185 bore FORGED Katech piston and rebushed LS7 Ti rod assemblies had a bob weight of 1620 grams....thats assembled with side and top coatings. thats less than the stock 4.125 bore cast version...there is one reason...
Old 12-18-2007, 06:41 AM
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Originally Posted by Katech
With forged pistons?

yea. I have a set of 090 c5r heads that will be used with this setup as well. I do not know what pistons I am going to use yet, but they will def be forged, and I am going to be getting a c5r block most likely...if it isn't within the budget, then a resleeved block will have to fit the bill...
Old 12-18-2007, 06:42 AM
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Originally Posted by Fraser@SpeedInc
I've heard from a guy that broke two connecting rods 539rwhp; but he blames my cam

The LS7 pistons were supposed to be forged....... then GM changed them just before production to cast... LS7 pistons are weaker design then LS2 pistons.
did they break because something else let go first, or where they the root cause of their own failure?
Old 12-18-2007, 10:11 AM
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Originally Posted by restoman45
did they break because something else let go first, or where they the root cause of their own failure?
Never determined, it wasn't on our dyno or in the shop.
Old 12-18-2007, 11:51 AM
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Originally Posted by restoman45
do you think these rods could withstand the abuse of ~8k rpms, and ~800 hp (n/a)...with a couple trips to the dragstrip a year? I think a lot of people dont realize that pound for pound, titanium is stronger than steel...

I personally wouldn't do it. I would use steel rods for that kind of power. I don't know what stroke you're going with but 8000rpm may be to high. There is also a lot of windage at that rpm.
Old 12-18-2007, 12:55 PM
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Originally Posted by Katech
I personally wouldn't do it. I would use steel rods for that kind of power. I don't know what stroke you're going with but 8000rpm may be to high. There is also a lot of windage at that rpm.

I will be going dry sump as well...

It will be a 4" stroke, depending on my final cam choice may or may not rev to 8k rpm, but would like a rod that is safe for those rpm/power, but I also want something light...


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