hey guys. was about to purchase a felpro intake gasket set when i came across some reviews on the net about the gaskets. it seems (according to some of the reviews on ls1.com-lt1 tech section) that the reviews for the felpro gasket werent near as favorable as the standard gm gasket. a few people mentioned a lot better holding seal with the gm gasket over the felpro. i've used a few felpro's over the last few months but have had unsuccessful results (due to some fitment issues of the intake and the deviation in deck height from stock, not due to them being felpro necessarily). so i really have no solid opinion on whether or not the felpro gaskets are any good. what are some of your opinions?

also, i've got the heads off and putting some new gaskets on there. felpro or GM gaskets?

 

I did my intake a year or so ago. I thought i had used felpro and was totally happy with it. The kit came with a tube of black 500 degree RTV. The stuff went on really nice and the gaskets seemed like terrific quality.

I'm thinking now that the kit was a Delco. If you can, check them out. If you see a tube of black RTV you might be looking at what I was so happy with. I'm sorry I can't be certain of the brand but I'm leaning toward Delco at this time.

 

The RTV is more important in the intake than the gaskets IMO.

Its important to get a good silicone bead without any breaks in it along the front and back. Creep up 1" on the heads on both sides as well.

I've also always smeared a very thin coat of RTV on the gasket mating services. You don't have to do this but I've never had a leak on any of the cars I've done it for.

Some people prefer the blue over the black as well.

 

lol, its alright man. i'm thinking of the felpro kit with the black rtv. it also comes with the tb gasket and injector rings. not a bad kit. and its not that this is that big of a deal. if it doesnt hold, i can just replace it. but since ive got it apart here, just thought i'd see if this controversy over gm gaskets being better quality (or at least having a better rep of sealing better) over felpro held true on this site. if so, might as well go that route and do it right the first time. if its all the same (or relatively the same, and mostly being a problem with the person applying the gasket moreso than the gasket being bad), then i'll just go with felpro.

btw- sorry for the long posts just for a gasket opinion!

 

Ive used the felpro intake gaskets with no issues. I used permatex copper rtv to seal the front and back and have no leaks.

 

yeah, ive always used copper and always apply a good bead. and i hate to debate this with you grip (i do value your opinion on this site), i was under the impression that you were not supposed to use rtv on the gasket itself due to breakdown of the rtv when combined with the fuel?

 

Never been an issue on any car I've used it on. Its a matter of personal choice.

 

Regardless of what you use, it's critical that the surfaces are clean. Using gasoline won't do it as it will leave a residual. The best product to clean any gasket mating surface is lacquer thinner.

 

True.

I use Brake Cleaner.

 

felpros and gm have been fine for me, no complaints on either.. the napa branded one works as well, real similar to the felpro "performance" gasket... the 1284 i think.