[JWA]

My tow rig has delveloped what I suspect is the Vortec intake water leak at 120k miles. Anyone got the GM part number for a good replacement? 99 Vortec 454 (7.4L) intake gasket set

Thanks in advance. :wacko:

 

[chevelless502]

Re: Part number request 99 Suburban

Why not just fix the intake water leak for less than a hundred bucks and go on? My 99 Tahoe had the same issue and it was no biggie at all.

Andy

 

[JWA]

Re: Part number request 99 Suburban

I guess I wasn't clear? All I want is the part number for the intake gasket set.

 

[chevelless502]

Re: Part number request 99 Suburban

I guess I wasn't clear? All I want is the part number for the intake gasket set.

LOL, oops my bad :clonk: . I wondered why ya wanted to replace the entire motor just for an intake leak.

Andy

 

[136679ss]

Re: Part number request 99 Suburban

I guess I wasn't clear? All I want is the part number for the intake gasket set.

Jeff, before you dive in (although this is a well documented issue with the dexcool and those damned plastic gaskets) check the nipple for the heater core return on the intake, the hoses are quick connect, and you may have developed a leak there. my 5.7 did and I later determined the whole lower plenum had cracked from a machine misthread. Not cheap, and definately not fun, pulling the compressor off is the worst part of that job.

 

[va2001ss]

The intake gasket should be #12534412. My 96 454 Suburban was leaking internally at the intake gasket as well.

 

[drums&cars]

The intake gasket should be #12534412. My 96 454 Suburban was leaking internally at the intake gasket as well.

Bingo.......lemme know if you need anymore part numbers.

 

[BB_Mike]

I suggest you think twice agout the GM replacement.

I just did this job last weekend and I used Felpro's improved gaskets in kit part # MS98000T. Advanced auto had them in stock for ~$50.

Look at my thrad in the Engine forum. It has pics and all.

BTW, the driver's side valve cover has to come off before the intake can come up. so the "kit" comes with one of those as well.

 

[va2001ss]

I suggest you think twice agout the GM replacement.

I just did this job last weekend and I used Felpro's improved gaskets in kit part # MS98000T. Advanced auto had them in stock for ~$50.

Look at my thrad in the Engine forum. It has pics and all.

BTW, the driver's side valve cover has to come off before the intake can come up. so the "kit" comes with one of those as well.

BB_Mike looks like you did the job on a SB 5.7. JBA has a BB 7.4(454), the valve cover should not have to come off and would have a different Felpro #.

 

[BB_Mike]

oops. Thanks for catching that. These Flu meds really have me zoned out.

 

[va2001ss]

oops. Thanks for catching that. These Flu meds really have me zoned out.

I know what you mean I was out for a week with the flu.

 

[JWA]

Thanks Guys!

 

[LeoP]

FYI, the Dexcool has nothing to do with the leak, it's the POS GM gaskets.

 

[70ChevelleRagtop]

Fel-Pro...the only way to go in my opinion!

 

[69ssmike]

I second the new Felpro gaskets, they are metal I believe.