Holley Stuff
That test compared it to a stock 6.1 intake. On our Dyno the Lx Eagle 5.7 manifold made more torque and Hp under 5000rpm than the 6.1l.
So it's likely losses below 5000rpm would be greater.
If you really want an intake that make GOOD Tq/Hp and not just one that LOOKS good. The stock Eagle 5.7 TRUCK manifold with active runners is a real monster. But no one gives it the time of day. It beat out the stock 6.4l manifold on a stock Apache 6.4l. The 5.7 TRUCK manifold made the same Torque but ~10hp more on our 471hp 6.4L.
imo that Eagle 5.7l TRUCK manifold would be a great cheap upgrade for any 5.7
That test compared it to a stock 6.1 intake. On our Dyno the Lx Eagle 5.7 manifold made more torque and Hp under 5000rpm than the 6.1l.
So it's likely losses below 5000rpm would be greater.
If you really want an intake that make GOOD Tq/Hp and not just one that LOOKS good. The stock Eagle 5.7 TRUCK manifold with active runners is a real monster. But no one gives it the time of day. It beat out the stock 6.4l manifold on a stock Apache 6.4l. The 5.7 TRUCK manifold made the same Torque but ~10hp more on our 471hp 6.4L.
imo that Eagle 5.7l TRUCK manifold would be a great cheap upgrade for any 5.7
