Sheet Metal Plenum 70mm Intake Manifold
Our sheet metal intake manifolds are based off 96-98 straight runner intakes. We remove the factory plenum, completely port intake runner to max capacity all the way through, fabricate and weld a larger sheet metal plenum, mill the intake flange flat and enlarge the throttle body opening to 70mm.
We have ran these on many different engine packages with great success over the years. To see the potential in this style intake you will need: a higher revving 4.0(Ported head/big cam)or a Stroker(Ported head/Cam), a ported head is a must to utilize the added airflow capabilities.
With the addition of this intake on a built Stroker with increased rpm potential, you will have potential huge gains in power(30-80hp) from the 3,000-7,000 range. On a big inch 4.8-5.0 Stroker that has good head potential with a smallish cam these work great from idle through the 6,000 rpm range and with a larger cam they just make more power.
These intakes only fit 96-06 or simply add the newer style power steering mounts to any older version then you can run this style intake. We recommend a 24lb minimum injector size, in most cases a 36-48lb injector will be required for NA builds.
When ordering you will need to provide a good salvageable 96-98 core, if not then you will need to pay the core charge. We have based the core procedure off "Good faith" on the customer part.
***These intakes are currently on a three week backlog once your order is placed as of: 04/01/25