Any LS Guys out there - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**1970 CST Short Wide** · Yesterday, 01:00 AM

I’m running an LS 1 5.7. I have a noise that is coming from my Intake Manifold that sounds like Something Rattling around in my intake. It’s different than a lifter noise plus it comes and goes. I recently put a set of Trick Flow heads and Cam in. Now I’m hearing the Michigan Motor Sports lifters I bought might be the problem. Anybody know anything about this??? I thought did my research but it turns out I could be wrong. Any input would be appreciated
Thank you

LS short box · Yesterday, 04:00 PM

I would ask the same question over on LS1tech.com.
On my LS swap projects I use the "real" GM LS7 lifters and lifter trays.

**A1971Blazer** · Yesterday, 04:14 PM

wish I could help, but my LS1 is stock as pulled from a 2002 TransAm.
I did put a set of MM upgraded trunnion rocker arms on it.
Other than the usual cold engine piston slap, it's really quiet on the top end.

**1970 CST Short Wide** · Yesterday, 08:05 PM

Quote:

Originally Posted by LS short box

I would ask the same question over on LS1tech.com.
On my LS swap projects I use the "real" GM LS7 lifters and lifter trays.

I though that’s what I was getting

**1970 CST Short Wide** · Yesterday, 08:07 PM

Quote:

Originally Posted by A1971Blazer

wish I could help, but my LS1 is stock as pulled from a 2002 TransAm.
I did put a set of MM upgraded trunnion rocker arms on it.
Other than the usual cold engine piston slap, it's really quiet on the top end.

Mine is out of an 02 Firebird WS6 and was quite even after I changed Cams
Just started this after about 500 miles.

**biketopia** · Today, 07:22 AM

Pull the valve covers and make sure a rock arm isn't acting up or loose.

Yesterday, 01:00 AM	#1
1970 CST Short Wide Senior Moment Join Date: Mar 2002 Location: Pittsburg Ca Posts: 4,158	Any LS Guys out there I’m running an LS 1 5.7. I have a noise that is coming from my Intake Manifold that sounds like Something Rattling around in my intake. It’s different than a lifter noise plus it comes and goes. I recently put a set of Trick Flow heads and Cam in. Now I’m hearing the Michigan Motor Sports lifters I bought might be the problem. Anybody know anything about this??? I thought did my research but it turns out I could be wrong. Any input would be appreciated Thank you __________________ 1970 CST LS 1 6 speed Ford 9 inch Detroit Tru Track, Dakota Didgital, Vintage Air, QA1 Coil Overs Front & Rear Lots of FUN 2013 GMC PU, Oldest Son 71 GMC LWB. QA1 Suspension, Angry SB. Youngest Son 2019 GMC Diesil Dually. Youngest Son 2017 Toyota SUV Daughters car 2018 Traverse , Wife’s Ride Pittsburg Ca 94565

Yesterday, 04:00 PM	#2
LS short box Registered User Join Date: Jun 2015 Location: Carlos MN Posts: 2,082	Re: Any LS Guys out there I would ask the same question over on LS1tech.com. On my LS swap projects I use the "real" GM LS7 lifters and lifter trays.

Yesterday, 04:14 PM	#3
A1971Blazer Senior Member Join Date: Nov 2013 Location: East Tennessee Posts: 2,175	Re: Any LS Guys out there wish I could help, but my LS1 is stock as pulled from a 2002 TransAm. I did put a set of MM upgraded trunnion rocker arms on it. Other than the usual cold engine piston slap, it's really quiet on the top end. __________________ 1967 C10 Step side 1968 C10 Step side 1970 Chevrolet K/5 Blazer 1972 Chevrolet K/5 Blazer .............

Today, 07:22 AM	#6
biketopia Senior Member Join Date: Jul 2015 Location: Warrenton VA Posts: 1,073	Re: Any LS Guys out there Pull the valve covers and make sure a rock arm isn't acting up or loose. __________________ 71 c-10 Long Bed, under the knife for a No Limit Engineering Wide Ride Chassis Pack and coil over static drop. 07 Silverado Classic 2wd 95 Camaro 427SBC/TH350



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