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AcampoDave · 10-23-2022, 11:09 PM

Does your exhaust manifold still have that flapper deal with the thermal spring in the outlet? I've seen a few of those get stuck in a partially open position.

10-23-2022, 11:09 PM	#17
AcampoDave Registered User Join Date: Feb 2013 Location: central California Posts: 2,796	Re: 66 c10 engine upgrades Does your exhaust manifold still have that flapper deal with the thermal spring in the outlet? I've seen a few of those get stuck in a partially open position.