Auto zone carries the Percy Seal-4-Good header and collector gaskets. I just picked up a set of the SBC header gaskets to go with my SLP headers...They are the same price as jegs or summit but without the wait of shipping. I was just walking thru looking around and saw them and figured what the hell Im gona need them anyways.......LOL

Let me ask you guys, should I cut the excess gaskets that SLP headers do not use or should I just leave them alone?


You know what I noticed about the gaskets? They are just aluminum gaskets doubled up. Instead of a single gasket they are 2 kinda stuck togther. I guess that would be the same as getting anyother kind of gasket. So thats why the cost is more cause you actually paying for 4 gaskets instead of 2. HMM?

Ive read on another post that your not suppose to use aluminum gaskets with stainless steel headers...is that true or does it not matter?

heres some pictures of the gaskets:

heres the pic showing they are just doubled up aluminum gaskets:

You know whats wierd? theres also a piece of paper with a few paragraghs of bible scripts...whats up that? not against it just weird to get that in a automotive part.

got those on my car with the Stage 8 locking header bolts, no leaks so far, and i have the collector gaskets from Percy also.

Are those the ones for stock heads? i want to get some of those percy gaskets but i don't know the part # for my car wit stock heads and the headers i have is hooker 2055's... thanks

quite honestly, i think that is one of the coolest things! don't mean to steal the thread so....i put set of those on my collectors, man, they rock! i love them, they sealed them up really well. i had a huge leak and it quited the car down instantly.

The part# on these are: 66012 It says for small block chevy square 265-400....
So I assume thats what you need.

I've got those on my car and no leaks so far. They have like 3 aluminum peices stamped together that way the header will compress it and it won't leak (i.e. fill in the low spots by not compressing all the way). IMO they are a must have if you're running headers.

Mine are leaking really bad. Then again, the bolts I have are really hard to get a allen key into, I tried hex style bolts but couldn't find any with a 5/16th head, so I went with an allen head style.

I just can't get them to seal, and I think its due to the bolts more than anything else.

Good gasket I used them. Install carefully since they can bend easily when you try to fit them behind the headers.

ive heard nothing but good about them i was looking at them at summit. not too bad of a price for the quality. i didnt know they had them at auto zone though ill have to check.

I think they have them at Advance Auto IIRC. I'm using them on my car and they work quite well.

their at AZ for the same price as Summit...but you wouldnt have to wait on shipping and pay for shipping.

or I should say, Summit or Jegs, "handling charge" yeah right!

I like mine. I've been using them with my SLPs for the past few years with no problems. I didn't try cutting out the extra sections that aren't needed with the SLP headers. I'll admit, it looks kinda goofy with big sections of exposed aluminum gasket, but I figured keeping them whole would make them a lot easier to install.

I have these and they work amazing. They can really seal up any gaps associated with an imperfect hedder flange. HGowever, the ones pictured are for square port heads. They will not work with the round style exhaust ports found on stock heads.

Wait........so we need the round ones for stock heads?

Those square ones pictured above won't work for stock heads?

I got Hooker Headers 2055 sitting, waiting to be installed and I was going to get those gaskets and Stage 8 bolts. The gaskets that came with the headers are square, so which ones do I get?

THey worked fine when I installed them.

Maybe you can get away with them but your stock ports are round even though they appear to be slightly oval. The round ones are the correct choice.

but my header ports are the same shape as the gaskets. So if I was to put round gaskets on square hearder ports the gasket would cover some of the passage to the header.

And yeah on the head ports the holes seem to have rounded corners but Im fine with what I put on. They would just fine for me and I really dont think if putting round gaskets would malke that big a difference.

As long as they seal you will be fine. The stock ports of your heads are considered round even though they are squarish with rounded edges. I have no idea why but thats how it is. Square gaksets are for aftermarket heads that have big exhaust ports.

you know, i have been looking at these gaskets for some time (header flange, i have the collector gaskets already and love them), but i don't know if they are really worth the money, unless your constantly removing/reinstalling your headers. i run a fel-pro 1404 small race gasket, have had several of them and they have all worked great. their like $20 less too.

I just picked a set of these up yesterday to install my headers with and I'm wondering...does it make any difference which side goes against the head or header flanges? One side appears to be cupped, and the other side a bit rounded from the pressing process. Does it really matter which side goes which way? How did you guys install them?


Ed

I wasn't sure, so installed them with the cupped area towards the headers. I figured with airflow it maybe better that way.

There wasn't any info on that part. I may be wrong.

Quite a few of my friends swear by those aluminum gaskets, I'll hafta try some of them

I put mine with the cupped side towards the head. I do not have any leaks so I am not sure which way really is the correct way. I was really leary at first since the cupped side didn't appear like it would seal very well with all thise tiny ridges. I have pics but just not at this computer.

I was leaning toward the cupped side toward the headers also, thinking I'd be keeping the smooth side with the direction of flow. Honestly I don't think it matters as they will compress anyway. They're really not that thick, just very mallable to fit the surfaces.


Ed

You are probably right. I geuss I could flip mine around. I think I enede up putting the cup side towards the head since i thought it would look funny the other way around. The cupped ridge would be exposed where the hedder flange does not cover it. They compress down so much I don't it really nmatters.

I managed to blow one of mine out, but they did last about 10 times longer than any others I have ran. I guess since they are only about 4x's the price that is a pretty good deal...lol