Lope question.
Thread Starter
Racer
Joined: Nov 2017
Posts: 269
Likes: 24
From: San Antonio
Lope question.
Hey all,
I have a question for you LT4 owners about there.
This is my first LT4 and when I purchased the car, I noticed a pretty pronounced cam lope. I assumed the previous owner installed a cam until I watched a GM endorsed video about the differences between the LT1 and the LT4.
The video said the LT4 cam has like a .500 lift and 1.6 rockers. Is this true or did I misunderstand? Do yours have a noticable lope?
I have a question for you LT4 owners about there.
This is my first LT4 and when I purchased the car, I noticed a pretty pronounced cam lope. I assumed the previous owner installed a cam until I watched a GM endorsed video about the differences between the LT1 and the LT4.
The video said the LT4 cam has like a .500 lift and 1.6 rockers. Is this true or did I misunderstand? Do yours have a noticable lope?
Thread Starter
Racer
Joined: Nov 2017
Posts: 269
Likes: 24
From: San Antonio
It's not a huge lope, but definitely something you'd think was cammed if you heard it.
This was confirmed by other people asking me if it had a cam too lol.
Team Owner
Joined: Sep 2001
Posts: 62,157
Likes: 1,731
From: Athens AL
C7 of the Year - Unmodified Finalist 2021
C4 of Year Finalist (performance mods) 2019
It does have more lift than the LT1 and 1.6 RR from the factory in the LT4. See here: https://www.grandsportregistry.com/lt1vslt4.htm
I have a lopey cam, I wouldn't say the stock LT4 has any real lope when I've heard them. That stock cam spec shouldn't lope.
No way to know what cam is in it though if you don't have any information.
I have a lopey cam, I wouldn't say the stock LT4 has any real lope when I've heard them. That stock cam spec shouldn't lope.
No way to know what cam is in it though if you don't have any information.
Race Director
Joined: Oct 2012
Posts: 17,382
Likes: 6,525
From: Melbourne, FL
The LT motors in general have a more lopey sound than more modern V8s. Especially with muffler deletes.
Take a video and post it and we can tell you better than just imagining what your car sounds like, lol
Take a video and post it and we can tell you better than just imagining what your car sounds like, lol
Thread Starter
Racer
Joined: Nov 2017
Posts: 269
Likes: 24
From: San Antonio
I'll record it today. It does have full headers, y pipe, and 2.5 exhaust, but the stock mufflers.
I'll do that as soon as I get moment.
Thread Starter
Racer
Joined: Nov 2017
Posts: 269
Likes: 24
From: San Antonio
I can't really get a better video than this because my phone sucks. I can hear it standing there, but you can't really hear it in the video until I bring it close to the exhaust. Watch till the end.
It's a bit more pronounced than in this video.
It's a bit more pronounced than in this video.
Last edited by Asterios Anagnostou; Apr 25, 2025 at 05:51 PM.
Melting Slicks
Joined: Oct 2003
Posts: 2,189
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From: Chapel Hill NC
2025 c3 ('68-'73) of the Year Finalist - Unmodified
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No cam expert here but I don't hear a lope. I have a LT4 and it doesn't sound lopey to me at all.
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Thread Starter
Racer
Joined: Nov 2017
Posts: 269
Likes: 24
From: San Antonio
I don't hear it. This is what mine sounds like with an off the shelf Summit cam. This was before the ported heads and my tune was off.
https://youtu.be/sDlVuk-v5co?si=OoNaiygpzV9Q6s1g
https://youtu.be/sDlVuk-v5co?si=OoNaiygpzV9Q6s1g
Something was up with the acoustics. Let me take it out of the garage and try again. The phone wasn't picking it up at all.
Btw yours sounds really good!
Race Director
Joined: Oct 2011
Posts: 16,089
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From: Dallas Texas
2025 C4 of the Year Finalist - Modified
Oh that is absolutely an lt4 hotcam. Nice! I have my oil pan off, and optispark off at the moment. Want to put the hotcam in my lt4, but can't find it anywhere.
I can assure you, put corsa mufflers, and you will hear it way more. What headers do you have? Cats and resonator in place?
I can assure you, put corsa mufflers, and you will hear it way more. What headers do you have? Cats and resonator in place?