No direct experience, but this is my 35,000 foot view on them...
I seem to remember that Richard Holdener has dyno tested the original SBC TPI manifolds on his YouTube channel. Again, if I remember correctly, they were pretty good for torque, but not as strong on the high end, due to their long tubes. Maybe pretty good for the needs of our trucks?
As a kid who saw these come out new on Corvettes and Camaros in the '80s, I think they look super cool.
I'm guessing they are a lot harder to find in the junkyards than the were 15-20 years ago.
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Originally Posted by Ziegelsteinfaust
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