04-27-2020, 12:38 PM | #1 |
MDRHRNT
Drives: 2019 Camaro SS Fireball Edition Join Date: Oct 2019
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How Strong Is The LT1 Crank?
Looking at doing some major upgrades. Aiming for 800 whp at least. Hopefully. How much power can the LT1 crank handle? I'll definitely be replacing pistons and connecting rods, and if the funds are there id probably replace the crank too, but if i decide not to, how much trouble will i be in?
Also, how much power can the stock lt1 handle in general? Just out of pure curiosity. I heard someone say something around like 850-ish and that kind of had me in disbelief. |
04-27-2020, 08:45 PM | #2 |
Scientific negotiator
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Stock LT1 as in with stock pistons? I wouldn't go over 700hp and even then it depends on how and where you run. Street, ok. Drag strip, OK (ish). Sustained track, I wouldn't honestly.
With forged internals you can sustain more. I think the stock crank is pretty stout. Which car is this and what cooling will you be adding (if any)?
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04-27-2020, 09:22 PM | #3 | |
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04-28-2020, 09:28 AM | #4 |
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LT1 crank is forged steel and pretty stout as is. I wouldn't blink an eye at 800whp on a stock one that is new / inspected.
Beyond that I would consider having the mains and rod journals ground undersize so they can have some larger radii. The stock rod journals only have a couple of thousandths of a rad in the corners.
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04-28-2020, 09:36 AM | #5 | |
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That being said the stock crank is better then most aftermarket pieces until you get up into Callies Magnum range. It will handle more power then you will throw at it. I would be more concerned about the thrust bearing with any belt driven power adder at higher boost levels.
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04-28-2020, 10:38 AM | #6 | |
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04-28-2020, 01:17 PM | #7 |
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AMP in Dallas said the stock LT1 crank can hold over 1250hp before it becomes an issue. They didnt lose the crank in their LT4 until it ws pushed to 1500hp.
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04-28-2020, 10:00 PM | #8 | |
MDRHRNT
Drives: 2019 Camaro SS Fireball Edition Join Date: Oct 2019
Location: Oklahoma
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04-28-2020, 10:03 PM | #9 |
MDRHRNT
Drives: 2019 Camaro SS Fireball Edition Join Date: Oct 2019
Location: Oklahoma
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So basically, have it tuned by one of those folks or by someone of equal skill level
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04-28-2020, 10:04 PM | #10 |
MDRHRNT
Drives: 2019 Camaro SS Fireball Edition Join Date: Oct 2019
Location: Oklahoma
Posts: 65
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04-28-2020, 10:07 PM | #11 |
MDRHRNT
Drives: 2019 Camaro SS Fireball Edition Join Date: Oct 2019
Location: Oklahoma
Posts: 65
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04-28-2020, 10:09 PM | #12 |
MDRHRNT
Drives: 2019 Camaro SS Fireball Edition Join Date: Oct 2019
Location: Oklahoma
Posts: 65
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If there was anyone on here that i didn't respond to, it was not intentional, and i would like to thank you guys for your insight!
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