I am considering some Kooks headers and y pipe. I am curious to know about fitment issues with either the 1 3/4 header or the stepped header 1 3/4 to 1 7/8. Both will end in a 3 inch collector. I would like to know if anyone has experience with either header and if there are fitment issues? Also concerned over ground clearance.

Thanks for your time.

 

i have the 1.75 and never had a problem with clearance. the collectors tuck very well. only issue was when i switched to a canton pan the oil level sensor didnt fit.

 

ive herd of people having a LOT of trouble getting these installed.

 

I have 1 3/4" Kooks, and their offroad Y-Pipe. Mine fit like a glove, and went in without issue. My understanding is they offer the best ground clearance of any widely available LT1 header. If your car has the factory oil cooler, it will have to be removed due to the fact they tuck up so tight to the block.

 

I've got the stepped 1 3/4-1 7/8" and they fit great. I only had to slightly touch one of the steering knuckle bolts with a grinder because there was slight contact when turning. MIne also have the A.I.R. fittings which is a nice plus because of visual emissions inspections up here. They fit great, have terrific ground clearance and work well. I have to use the small PF454 oil filter which is no big deal.

--Alan

 

Great, thank you for the reply.

Since I have an audience, do you guys think that a single 3 inch pipe will be a restriction if I am looking at a AI head and cam package?

Thanks again.

 

Bringing this back
Went to drive my Procharged setup yesterday and the linkage is rubbing my 13/4-17/8 kooks headers pretty bad???
I am running stock motor mounts and a BMR k-member and Kooks just told me since my setup is highly modded that is probably the reason it is not fitting .

Do you guys with Kook stepped headers care to post pics of were the #1 primary is near the steering linkage.

My friend and I do not want to mess with the linkage (grinding) if all possible. I don't really feel safe doing so

THANKS FOR ANY HELP FELLAS

 

Alan,

Do you have a factory oil cooler on your car by any chance?

Thanks,

Tony

 

I hear their stepped headers have some issues, and there 1 3/4 headers fit pretty good.

 

I don't have the factory oil cooler...I think that is where some of the fitment issues are..My stepped headers fit right in with no clearance issues..I've had them for a bit over two years and they still work great and have that golden brown hue that uncoated stainless gets...

--Alan

 

Thanks Alan! If I order them I guess I'll have to be aware I might have to remove the oil cooler!

 

I don't think there is any doubt that the oil cooler will have to be removed if you get Kooks headers. I removed my oil cooler, and I'm running a short filter. I don't see any way that there would be room for the cooler running those headers. The upside is that they tuck up really nice.

 

It looks like I'll have to remove the cooler if I go with these even though I was trying not to. A small price to pay for an excellent exhaust system though. Did you have the moroso style cooler on yours?

 

The oil cooler must come off and you cant run the tall filters either.

 

If the Moroso was the earlier, shallower of the two LT1 oil cooler designs, then yes.

 

I think the cooler has to come off with most LT's. I am going to get rid of my Jet Hots and get some kooks myself