Christian Steffen
I'm Awesome
Need some input/advice. I cracked the heater core hose adapter on the intake manifold awhile ago when I was replacing the adapter. It's not leaking but I would like to replace it. Does anyone have some suggestions for an intake manifold for a 98 Chevy 454. I haven't done any upgrades to the motor but I wouldn't mind the ability to do so in the future. Any advice or input would be great.
Sent from my 454
There really aren't many options to keep the EFI setup and run an aftermarket intake manifold. It's possible that edelbrock might make a efi manifold for the 454 with oval ports, but it probably isn't cheap and will take some work to get integrated.
From what I can gather the stock intake manifold can get you too ~400 hp (maybe a bit more if you start modifying it), but to get over 450 it'll likely require a different setup. This is provided that you do a cam swap and tune the computer of course.