05-06-2021, 08:57 PM | #1 |
Drives: 2019 2SS Camaro Join Date: Apr 2012
Location: Al
Posts: 828
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LT4 Rod in LT1
Will it work? Seems everyone is out of rods for 4 to 8 weeks
quote From an article I found Components differ among the parts attached to the crankshaft as well. Like the LT1, the LT4 uses 6.125-inch-long forged, powdered-metal connecting rods, but they’re highly machined for greater strength and reduced reciprocating mass. They have the same balance mass as the LT1 rod but a higher load capability, with exclusive features including machined lightening slots and a “stepped” pin end with a premium bushing. What is a stepped pin end? |
05-06-2021, 10:33 PM | #2 |
Drives: 2022 Lt1 A10 Join Date: Nov 2015
Location: clark, mo
Posts: 8,857
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The crank is turned differently on the Lt4 with fillets on the journals.v the Lt1 thats not. Don't know if they are interchangeable
https://th.bing.com/th/id/R6ae2fc6cb...sl=&pid=ImgRaw https://th.bing.com/th/id/Re3b474f86...OIw&pid=ImgRaw https://www.corvette-web-central.com...Crankshaft.jpg https://www.onallcylinders.com/2018/...ads-cam-specs/ https://www.onallcylinders.com/2018/...am-specs-more/ I've posted some info for you to take a look at. Hope it helps
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Last edited by laynlo15; 05-06-2021 at 10:43 PM. |
05-07-2021, 05:47 PM | #3 |
Drives: 2019 2SS Camaro Join Date: Apr 2012
Location: Al
Posts: 828
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Thank you laynlo very helpful. So maybe I order 1 and see?
So I blew out the front seal and did a blow down test. All cylinders were at 5% except 2 is at 22% and I hear feel it blowing air up through the oil air separator, so that means its going by the rings into the crankcase. Im guessing got a broke ring land. Got the head off that side. Bore and even top of piston looks good. Should have piston out tomorrow. If it is I will post up pics. So Im gonna forge it while its down. Question should I go 10 to one like the lt4? It should be more forgiving an easier to tune I suppose but at what power cost with 12 pds of boost this is at 660 rw |
05-07-2021, 09:51 PM | #4 | |
Drives: 2017 Camaro 2SS A8 Join Date: Aug 2018
Location: Petersham MA
Posts: 4,701
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Quote:
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2017 Chevy Camaro 2SS A8 Whipple 3.0, Mast Black Label heads, Fore triple in-tank pumps, 112mm TB, LPE +52% injectors, LPE BB HPFP, 15” conversion 1059 WHP/944 WTQ, 9.48@150
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05-09-2021, 02:46 PM | #5 |
Drives: 2019 2SS Camaro Join Date: Apr 2012
Location: Al
Posts: 828
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see other post for inspection tare down pics
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05-11-2021, 10:43 AM | #6 |
Petro-sexual
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I've seen the rod length stated at 6.125 but I thought I read GM state it was like Gen III/IV 6.098. I think LT1/LT4 are the same, regardless, though. If you stay with consistent ring land height, you shouldn't have a problem, I'd imagine.
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