SLP Headers. Are they reallly that bad?
Seriously though, Perhaps a better way I would answer the initiating gentlemans question is; In my opinion while the SLP's are fine.. they aren't the best possible choice especially in a car that is or will be being extensively built. They had horrible clearance issues which IF they had been absolutely the best performing headers - I would have lived with but.... the Kooks just made more power given the rest of my build. To me - it was a no-brainer. spend 10k on a motor build and not put in the headers making the most power
In the past week, it looks like I may have toasted my motor and am probably putting in a 427. These headers will go back to Kooks largely due to the fact that the coating came off. How Stainless Steel headers rusted and shed the ceramic coating is beyond me but... they did.
I will need different ones for the 427.
I fully expect Kooks will stand by their product as far as the current set but I will report back on that issue also.
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All LT's perform nearly the same... MAYBE +/- 3 or 5 rwhp. what your paying for when you buy them is what they are made out of, and who they are made by.
Kooks are stainless and last forever, thats why they are $805.
Pacesetters are just ceramic coated and may only last 5 years. Thats why they are $375.
SLP's aren't that great, not stainless, and their price tag is prolly a little higher than it should be because they are "SLP"

Hookers are good in-betweens.
In my eyes there were only 2 choices when buying my headers....Kooks or Pacesetters. I know people who have Kooks and their car doesn't impress me, and I know people with Pacesetters that had a huge pull difference. I chose pacesetter, they are a tried and true LT with good gains, good quality, easy fit, and good clearence. Everything you get with a Kook with the exception of stainless steel at less than 1/2 the price.
Unless your talking steeped headers, then your talkin a lil more gain and it would be Kooks all the way.
pacesetter in my car, and slp in my friends car, an the slp just got stupid ground clearance, no way i would lower that car,
i was much happyer with my pacesetter, good ground clearence and looked awesome
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SLP's aren't that great, not stainless, and their price tag is prolly a little higher than it should be because they are "SLP"

SLP's are stainless, and coated , they are cheaper than kooks( last I checked ) The ground clearance is the only issue I have had with mine . They bolted right up and the cats and y pipe fit . First high speed run on a back road and one of the tubes on the pass. side and both converters have a flat spot on the bottoms. The tube is almost thru I think!! The seat of the pants torque increase was great. I don't know if I would buy them again . Maybe just the pass side!!!
-Joel
I'm carefull on speed bumps since I bounced them that one time after I installed them. Plus they came with a stainless 3 in. Y-pipe. 

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