Silly question on valve cover gasket thickness for 235 - The 1947 - Present Chevrolet & GMC Truck Message Board Network

LuckyLightning · 10-15-2014, 01:49 AM

I need to take the head off my 235 to inspect where the water/coolant is leaking. Getting the head gasket kit is no big deal, but shopping for the valve cover gasket seems to present a small challenge.

It's offered in two different thicknesses:
7/32" Thick
5/32" Thick

It's been a while since I've replaced one of these (and even back then, I remember doing a terrible job), so I'm hoping someone here can tell me what should be considered while deciding which thickness to get?

Also, I noticed the 5/32" option comes with grommets - do I need that?

Thanks in advance.

TJ's Chevy · 10-15-2014, 11:18 AM

A thicker gasket adds better sealing. Either or will work I'm sure. The one that comes with grommet is probably for the valve cover holes.

LuckyLightning · 10-15-2014, 12:07 PM

Thanks TJ. I don't think I have any holes on my valve cover... oh yeah, the breather I guess. I'll probably get that option anyway.

10-15-2014, 01:49 AM	#1
LuckyLightning Registered User Join Date: Nov 2005 Location: Round Rock, TX Posts: 348	Silly question on valve cover gasket thickness for 235 I need to take the head off my 235 to inspect where the water/coolant is leaking. Getting the head gasket kit is no big deal, but shopping for the valve cover gasket seems to present a small challenge. It's offered in two different thicknesses: 7/32" Thick 5/32" Thick It's been a while since I've replaced one of these (and even back then, I remember doing a terrible job), so I'm hoping someone here can tell me what should be considered while deciding which thickness to get? Also, I noticed the 5/32" option comes with grommets - do I need that? Thanks in advance. __________________ Michael - 1962 C20 LB stepside (project thread) - sold - 1963 Chevy C10 LB stepside (donor) - 1963 Chevy C10 LB Custom flatbed (project thread) - sold - 1979 K20 LB fleetside (project thread) Favorite exchange on the board so far: ol_Curt: "Jason, do you have power steering?" jason65: "No, but I lift weights."

10-15-2014, 11:18 AM	#2
TJ's Chevy Registered User Join Date: Mar 2013 Location: Southern Oregon Posts: 10,384	Re: Silly question on valve cover gasket thickness for 235 A thicker gasket adds better sealing. Either or will work I'm sure. The one that comes with grommet is probably for the valve cover holes. __________________ 1966 Chevy C10 "Project Two Tone" http://67-72chevytrucks.com/vboard/s...d.php?t=596643 1964 GMC "Crustine" semi-build:http://67-72chevytrucks.com/vboard/s...d.php?t=665056 My youtube channel. Username "Military Chevy": https://www.youtube.com/channel/UC_h...fzpcUXyK_5-uiw

10-15-2014, 12:07 PM	#3
LuckyLightning Registered User Join Date: Nov 2005 Location: Round Rock, TX Posts: 348	Re: Silly question on valve cover gasket thickness for 235 Thanks TJ. I don't think I have any holes on my valve cover... oh yeah, the breather I guess. I'll probably get that option anyway. __________________ Michael - 1962 C20 LB stepside (project thread) - sold - 1963 Chevy C10 LB stepside (donor) - 1963 Chevy C10 LB Custom flatbed (project thread) - sold - 1979 K20 LB fleetside (project thread) Favorite exchange on the board so far: ol_Curt: "Jason, do you have power steering?" jason65: "No, but I lift weights."



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