need 292 exh man gasket help - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**rideblue00** · 05-27-2013, 11:04 AM

Looking for info on what kind of gasket to use on my 292 exhaust manifold. I replaced it once with one from napa, and it didn't last very long and im tired of the ticking. Need info on what to use. Maybe its warped. I need to get it off again and inspect it.

Are all the exhaust manifolds for the 6's the same? Mine has some cracks and am considering replacing it.

**tkeduk8r** · 05-27-2013, 12:45 PM

As far as I know trey are all interchangable, but not the same exactly. There may have been some different bolt mount differences for choke heat shields, trhottle kickdown etc. I do have one or two extra manifolds aroiund here that could use a good home, and I even have access to a surfacing machine to make the mounting surface flat for you if that would help. Lemme know...
--Mike

**rideblue00** · 05-27-2013, 03:46 PM

Do you know what engine size your extras came from?

kjc292 · 07-04-2013, 03:46 AM

I also had problems with my 292 and the exhaust. Just had the intake and exhaust manifold bolted together and then machined. got a new gasket and problem fixed. Don't forget to tap the bolt holes, shot them with air, then loc-tite.

**rideblue00** · 07-04-2013, 01:39 PM

I should have specified which gasket. I was talking about the gasket that is sandwiched between the intake and exhaust. I am wondering if the exhaust man. is warped and wont seal. I have some ideas. I have another 2 pc setup i think i will try to have surfaced. I am looking for which gasket material is best to use.

Heater63 · 07-04-2013, 07:23 PM

Try Remflex.com, I don't see the intake floor/exhaust-heat gasket BUT they have sheet pieces to cut your own custom shapes. Remflex are thick graphite impregnated gaskets.

I'm using one on the head to intake/exhaust.

lmdangerous · 07-04-2013, 08:59 PM

When mine blew -used a flat file to dress the surfaces and make sure they were flat. I did chase all the threads - used loctite with a new gasket( stock type ) and coated both sides with ultra copper . I've used this stuff on headers before and had to beat them off with a hammer.
LMD

05-27-2013, 11:04 AM	#1
rideblue00 Senior Member Join Date: Feb 2010 Location: Lambertville, MI Posts: 1,854	need 292 exh man gasket help Looking for info on what kind of gasket to use on my 292 exhaust manifold. I replaced it once with one from napa, and it didn't last very long and im tired of the ticking. Need info on what to use. Maybe its warped. I need to get it off again and inspect it. Are all the exhaust manifolds for the 6's the same? Mine has some cracks and am considering replacing it.

05-27-2013, 12:45 PM	#2
tkeduk8r Senior Member Join Date: Apr 2001 Location: Alexandria, MN Posts: 1,462	Re: need 292 exh man gasket help As far as I know trey are all interchangable, but not the same exactly. There may have been some different bolt mount differences for choke heat shields, trhottle kickdown etc. I do have one or two extra manifolds aroiund here that could use a good home, and I even have access to a surfacing machine to make the mounting surface flat for you if that would help. Lemme know... --Mike __________________ 63 C20 2WD, 230/SM420/4.11 73K 68 C30 dump truck, 327,SM425,4.56 66K original 68 C10 2WD SWB Stepper, 250/3-tree/3.73 66K.... Wifes 68 Buick Skylark Custom Conv., 350/TH400/2.56 In our family since '79 69 GMC 1500 SWB 2WD, 350/TH350/3.73 posi... 70 K10 SWB 4X4 4-sp,ps, pb, tilt, buckets, console, sliding back window (Need AC parts) WIP 72 Chevy K20 4x4 350/350/205/4.56 donor 72 Vette 350/M21/3.70 posi, triple black and super fast 84 Olds Cutlass Brougham 350/2004r/4.11 was Dad's

05-27-2013, 03:46 PM	#3
rideblue00 Senior Member Join Date: Feb 2010 Location: Lambertville, MI Posts: 1,854	Re: need 292 exh man gasket help Do you know what engine size your extras came from?

07-04-2013, 03:46 AM	#4
kjc292 Registered User Join Date: Jun 2013 Location: Oregon Posts: 89	Re: need 292 exh man gasket help I also had problems with my 292 and the exhaust. Just had the intake and exhaust manifold bolted together and then machined. got a new gasket and problem fixed. Don't forget to tap the bolt holes, shot them with air, then loc-tite. __________________ 79' c20 std cab 292 3speed granny - daily driver. 77' c30 std cab 454 th400 4.10 - fathers truck then mine. 95' ford bronco 302 4speed overdrive. 2002 mustang auto v6 - girlfriends daily driver. Debt just means that you had more fun than you're suppose to have

07-04-2013, 01:39 PM	#5
rideblue00 Senior Member Join Date: Feb 2010 Location: Lambertville, MI Posts: 1,854	Re: need 292 exh man gasket help I should have specified which gasket. I was talking about the gasket that is sandwiched between the intake and exhaust. I am wondering if the exhaust man. is warped and wont seal. I have some ideas. I have another 2 pc setup i think i will try to have surfaced. I am looking for which gasket material is best to use.

07-04-2013, 07:23 PM	#6
Heater63 Registered User Join Date: Dec 2007 Location: N Texas Posts: 580	Re: need 292 exh man gasket help Try Remflex.com, I don't see the intake floor/exhaust-heat gasket BUT they have sheet pieces to cut your own custom shapes. Remflex are thick graphite impregnated gaskets. I'm using one on the head to intake/exhaust. __________________ 292 + TKO500

07-04-2013, 08:59 PM	#7
lmdangerous Registered User Join Date: Nov 2010 Location: Houston, MS Posts: 184	Re: need 292 exh man gasket help When mine blew -used a flat file to dress the surfaces and make sure they were flat. I did chase all the threads - used loctite with a new gasket( stock type ) and coated both sides with ultra copper . I've used this stuff on headers before and had to beat them off with a hammer. LMD



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