TimEldridge74
Newbie
Ill describe the situation I'm in first, as I'm between a rock and a hard place.
I'm going to be building an L29 454 (96-00). I plan on making this a top to bottom build, making a 496 stroker. I have the 2.1L Whipple Supercharger that was made for this engine, bolts directly to the factory intake. So, to use this supercharger, I have to use the factory intake, which includes the lower intake manifold.
Unfortunately, one of the biggest restrictions of airflow are the intake ports on the factory heads. They're an improvement from the 91-95 heads, but its still a big restriction. To improve, an easy way would be swapping to rectangle ported heads, can double/triple the airflow from factory. However, I'd need a lower intake manifold with matching rectangle ports that still bolts up to the rest of the factory intake. I have searched with no luck. The way the lower intake from the factory was made, there (looks like at least) isn't enough material on the ports to have them drilled and matched to the rectangular ported heads.
Obviously, I'll be adding power with the Whipple, but there's just so much I'm missing out on power-wise with the factory port-style heads and lower intake manifold.
Looking for recommendations. Is there an aftermarket lower intake out there that has rectangle ports AND still fits with the factory intake? Or, do I ditch the intake entirely and go to an EFI setup and plumb a custom intake to where the Supercharger sits? it would solve my airflow issue hands down, its just I've never seen it done before with that specific Whipple setup. Any advice is greatly apricated, curious what anyone has to say.
I'm going to be building an L29 454 (96-00). I plan on making this a top to bottom build, making a 496 stroker. I have the 2.1L Whipple Supercharger that was made for this engine, bolts directly to the factory intake. So, to use this supercharger, I have to use the factory intake, which includes the lower intake manifold.
Unfortunately, one of the biggest restrictions of airflow are the intake ports on the factory heads. They're an improvement from the 91-95 heads, but its still a big restriction. To improve, an easy way would be swapping to rectangle ported heads, can double/triple the airflow from factory. However, I'd need a lower intake manifold with matching rectangle ports that still bolts up to the rest of the factory intake. I have searched with no luck. The way the lower intake from the factory was made, there (looks like at least) isn't enough material on the ports to have them drilled and matched to the rectangular ported heads.
Obviously, I'll be adding power with the Whipple, but there's just so much I'm missing out on power-wise with the factory port-style heads and lower intake manifold.
Looking for recommendations. Is there an aftermarket lower intake out there that has rectangle ports AND still fits with the factory intake? Or, do I ditch the intake entirely and go to an EFI setup and plumb a custom intake to where the Supercharger sits? it would solve my airflow issue hands down, its just I've never seen it done before with that specific Whipple setup. Any advice is greatly apricated, curious what anyone has to say.