Stealth Heads + Exhaust Mani

[Purple440]

I'm considering buying the Stealth heads for my 440, but I recently installed an Eddy RPM intake manifold and I'm wondering since the ports are bigger on the Stealth health heads compared to my iron 452's, do I have to worry about the runner size of the mani matching the port size?  Not for bolt up, but I mean for performance matching.

Not sure if I explained that right...

- Doug

[firefighter3931]

I'm considering buying the Stealth heads for my 440, but I recently installed an Eddy RPM intake manifold and I'm wondering since the ports are bigger on the Stealth health heads compared to my iron 452's, do I have to worry about the runner size of the mani matching the port size?  Not for bolt up, but I mean for performance matching.

Not sure if I explained that right...

- Doug

Doug, your thread title states exhaust manifolds but you seem concerned about port alignment on the intake manifold ? 

The Stealth heads come with stock sized intake/exhaust ports so the RPM will work fine....no worries. Any header/ex manifold that bolts to a stock head will also work with the Stealth as well. If you do purchase the Stealth heads make sure you upgrade the locks/retainers. 


Ron