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Posted

I have a 2007 4.8l Silverado and I was thinking of putting speed engineering 1-3/4 long tube headers and I was wondering if can I weld a flange on it and bolt them up to the oem cats ?

Posted
On 7/27/2022 at 1:58 PM, Luis Salazar said:

I have a 2007 4.8l Silverado and I was thinking of putting speed engineering 1-3/4 long tube headers and I was wondering if can I weld a flange on it and bolt them up to the oem cats ?

Just buy a quality set of shorty headers.  Less hassle, will work well.

Posted

Stock manifold do the same thing as shorty headers. There is zero benefit to shorty headers.

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