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LT4 Rods in LQ9 Build

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Old 10-02-2017, 07:48 AM
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Default LT4 Rods in LQ9 Build
Quick Question - I cant find the rod specs for the current Gen LT4SC. But it appears as if theyre same as LS just piecing the information together - 6.125/2.100/.927

Ive got 2 builds happening right now. A budget 6.0 and a not so budget 6.0. For the not so budget Ive picked up Lunati H beams.

Would these be suitable for the budget build? What material are they? Since theyre ina 650hp factory car, and theyre factory rods, would it be reasonable to suspect they'll hold even more HP. Most know how strong the stock bottom is.

Thoughts? I tried searching and couldnt find much.
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Old 10-02-2017, 09:45 AM
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Lt1 and lt4 rods are 6.100. They are spot on for ls1s on specs but are very much superior in design and strength.
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Old 10-02-2017, 11:15 AM
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Last I looked, I'm pretty sure I saw that the bearing tangs are in a different position.
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Old 10-02-2017, 11:46 AM
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Borrowed from a friend
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Old 10-02-2017, 11:58 AM
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Tangs are pretty far apart. so 663p/hn prob won't work
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Old 10-02-2017, 12:20 PM
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Those are good looking rods...
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Old 10-02-2017, 12:51 PM
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Originally Posted by tech@WS6store
Lt1 and lt4 rods are 6.100. They are spot on for ls1s on specs but are very much superior in design and strength.
Thanks for that. Length doesnt really matter as long as I dont have any pistons yet - and I dont. I planned on measuring if I were to buy them anyways - never trust ebay measurements. Theyre a bit on the heavy side.

So I'll just buy hyper-e pistons for the "budget build" in stock LS1 stroke.
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Old 10-02-2017, 05:24 PM
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Gm rod bearings are $20 per set so make sure you have ~$160 in the budget for rod bearings.
Afaik they arent available in the aftermarket yet but ill check.
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Old 10-02-2017, 05:25 PM
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Originally Posted by JakeFusion
Those are good looking rods...
#nohomo?
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Old 10-03-2017, 06:30 PM
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Originally Posted by tech@WS6store
Gm rod bearings are $20 per set so make sure you have ~$160 in the budget for rod bearings.
Afaik they arent available in the aftermarket yet but ill check.
Dude says he's including og bearings. Whole set rods with coated bearings for $199. Good for budget. I'll get ahold of you for pistons.
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Old 10-03-2017, 06:34 PM
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Smokin deal!
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Old 10-05-2017, 06:43 PM
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Got 10 for the price of 8. Weighed them all. I'll not use the far left 2 so the spread is 689 to 692g. I'll take that.


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Old 10-12-2017, 10:52 AM
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That's a fairly large spread in weights between the two sets pictured. Are there part numbers on the side?

It surprises me they went to .943 and a steel rod when the LS9 was .984, 5.990 and Ti.
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Old 10-12-2017, 11:06 AM
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Originally Posted by TrickFlowTech
That's a fairly large spread in weights between the two sets pictured. Are there part numbers on the side?

It surprises me they went to .943 and a steel rod when the LS9 was .984, 5.990 and Ti.
The pistons get quite a bit more support from the dome they use for the higher cr. They are a forged piston also.
Remember the lsa uses a big gen4 rod basically.
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Old 10-12-2017, 01:38 PM
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Originally Posted by JakeFusion
Those are good looking rods...
That's what she said.
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Old 10-17-2017, 06:04 PM
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Originally Posted by TrickFlowTech
That's a fairly large spread in weights between the two sets pictured. Are there part numbers on the side?

It surprises me they went to .943 and a steel rod when the LS9 was .984, 5.990 and Ti.
https://i.imgur.com/ye2fMPH.jpg

Right, ​​should note I measured with the bearings in
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Old 10-18-2017, 10:18 AM
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Originally Posted by tech@WS6store
Lt1 and lt4 rods are 6.100. They are spot on for ls1s on specs but are very much superior in design and strength.
Yo, this says 6.125 rods?

http://media.chevrolet.com/media/us/...owerhouse.html
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Old 10-18-2017, 11:05 AM
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Originally Posted by SmokeyCheese1
As measured the "beam" is 4.515. The pin is .943 and the big end is 2.225 just like ls is.
Not the first time whats published isnt correct. Those are actual measurements as well.
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Old 10-24-2017, 09:51 AM
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Originally Posted by tech@WS6store
As measured the "beam" is 4.515. The pin is .943 and the big end is 2.225 just like ls is.
Not the first time whats published isnt correct. Those are actual measurements as well.
Thank you for the confirmation.
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Old 10-24-2017, 10:18 AM
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I think I'd rather put those in an engine than a set of H-beams From Eagle or Scat or a company of that nature
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