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Re: Headers to 2.5" Ramhorns
They are 25% larger so they will flow better. Probably wouldn't notice on a stock engine. Your Blazer is a 4WD. 4WD used the straight down center dump whereas 2WD uses the angled. I am not sure whether or not you would run into clearance issues with the angled dumps because I have never tried it. Perhaps someone else can tell you.
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1961 C1 Corvette
1959 El Camino 350 TPI, 9" 4 w disc
69 Blazer K5 - sold July '20
2021 Durango RT 5.7
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