Quote:
Originally Posted by wang970305
Just went FBO last month..
I think here is like a ticking sound from long tube headers?..I have heard that is just a normal sound of lth? Is that true?
I can hear it from the bottom of the car clearly when the car is in park, when driving on the road, I can barely hear it when I slightly hit on the throttle.
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"Ticking" is generally normal from LTH's. As Josh pointed out, the thin wall material transmits sound more readily than the OE style manifolds, which are much thicker. I've read that having them jet coated helps reduce under hood noise from the headers. Even high temp header paint. You could also heat wrap them, but I've read wrapping headers can accelerate wear.
I kind of prefer the mechanical sounds from the engine. Particularly noisy lifters (healthy lifters), and of course superchargers/turbos. You could always dull the LTH tick with supercharger hum...
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2019 1SS1LE M6 Shadow Gray Metallic
ProCharger D1X Race Kit - 4.25" Pulley || GPI Pistons/Rods - ACL Bearings - ARP Hardware || LME Timing Chain Guide || Katech C5R Timing Chain || Katech OE Spec Billet Oil Pump || OE Ported Heads || CHE Trunnion Upgrade || BTR 220 Cam - BTR .660" Dual Springs - GM Racing "Caddy" Lifters - BTR 3/8" Pushrods (7.825") || ATI Balancer || LT4 Injectors || LT4 HPFP || JMS BAP || DSX Flex Fuel || LT2 Intake Manifold || LTH (Catless) || Stainless Works Redline Series NPP || 91 + 8oz Boostane
7/26/2024 Tuning in progress