Help chirping noise!!
Thread Starter
TECH Fanatic
Joined: Oct 2022
Posts: 1,776
Likes: 627
From: Louisiana
BTR GEN III & IV TRUCK CAM - STAGE 3 - V2 - BTR31824100 (218/224 .553/.553 110+0)
this is the cam that's in my truck, mind you I do spray this truck with up to 200 shot of nitrous. I usually keep it at 150 tho. Any suggestions on a different cam if I do need to replace it or should I keep the same cam Thread Starter
TECH Fanatic
Joined: Oct 2022
Posts: 1,776
Likes: 627
From: Louisiana
Thread Starter
TECH Fanatic
Joined: Oct 2022
Posts: 1,776
Likes: 627
From: Louisiana
Thread Starter
TECH Fanatic
Joined: Oct 2022
Posts: 1,776
Likes: 627
From: Louisiana
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes
Verdad Gallardo
Awesome K5 Blazer Restomod Comes With C7 Corvette Power
Verdad Gallardo
10 Camaros You Should Never Buy
10 LS Engine Myths That Refuse to Die
Verdad Gallardo
TECH Addict
Joined: Oct 2016
Posts: 2,513
Likes: 480
From: PDX-OR-USA
The important thing is looking down in the engine and seeing if you have a damaged cam lobe,
I have also seen an engine "chirp" when one of the cam bearings walked out..
A inexpensive bore scope is your friend on this one..
Can you see the cam looking down the lifter bores?
I have also seen an engine "chirp" when one of the cam bearings walked out..
A inexpensive bore scope is your friend on this one..
Can you see the cam looking down the lifter bores?
Thread Starter
TECH Fanatic
Joined: Oct 2022
Posts: 1,776
Likes: 627
From: Louisiana
The important thing is looking down in the engine and seeing if you have a damaged cam lobe,
I have also seen an engine "chirp" when one of the cam bearings walked out..
A inexpensive bore scope is your friend on this one..
Can you see the cam looking down the lifter bores?
I have also seen an engine "chirp" when one of the cam bearings walked out..
A inexpensive bore scope is your friend on this one..
Can you see the cam looking down the lifter bores?
Thread Starter
TECH Fanatic
Joined: Oct 2022
Posts: 1,776
Likes: 627
From: Louisiana
yes I removed both heads, the lifter trays are very loose on both sides but the drivers head is very clean and fresh looking where as the passenger head has alot of like black carbon build up around the valves and the springs
Thread Starter
TECH Fanatic
Joined: Oct 2022
Posts: 1,776
Likes: 627
From: Louisiana
the springs have black carbon looking build up on them where as the drivers side is very clean.
also the guy i got the motor from supposedly port, polished and milled the heads and I'm no machinist but i do not see any signs of any port work so i think im going to bring the heads to a machine shop and have them check them and confirm the port work or do the port work if its not done and also from my understanding milling is a must on 243 heads on a 5.3 so I'll get that looked at too
also the guy i got the motor from supposedly port, polished and milled the heads and I'm no machinist but i do not see any signs of any port work so i think im going to bring the heads to a machine shop and have them check them and confirm the port work or do the port work if its not done and also from my understanding milling is a must on 243 heads on a 5.3 so I'll get that looked at too
All LS engines will have this “clean side and dirty side” head under the valve covers. It’s from the way the PCV pulls clean air through the engine. First time I saw this, I thought the engine in front of me had a new head on one side.
Thread Starter
TECH Fanatic
Joined: Oct 2022
Posts: 1,776
Likes: 627
From: Louisiana
oh wow, I don't know what's going in. I can't find any damage anywhere. Besides the loose trays
The trays should hold the lifters so snugly, that the lifters won’t fall out of them when removed, even in a 150k mile engine. You should try and find a new set of GM lifter trays. Don’t settle for aftermarket trays, as they aren’t made from the same product, and will wear quickly. The loose trays will allow the lifters to turn (instead of running exactly square) a tad on the cam lobe. This will cause lobe and wheel scarring at a minimum from the heat that is produced, from not staying square on the lobe. Looks to me from your pics, that this is your exact issue.
Thread Starter
TECH Fanatic
Joined: Oct 2022
Posts: 1,776
Likes: 627
From: Louisiana
The trays should hold the lifters so snugly, that the lifters won’t fall out of them when removed, even in a 150k mile engine. You should try and find a new set of GM lifter trays. Don’t settle for aftermarket trays, as they aren’t made from the same product, and will wear quickly. The loose trays will allow the lifters to turn (instead of running exactly square) a tad on the cam lobe. This will cause lobe and wheel scarring at a minimum from the heat that is produced, from not staying square on the lobe. Looks to me from your pics, that this is your exact issue.
when I picked up the trays none of the lifters came out. I had to use a magnet to remove them from the block.