So I want to fit a holley 670 ultra vac. sec. avenger (and perhaps later a mild cam) with the stock air cleaner and keep it under the stock screen. To fit the holley to the stock intake I have had to fit an adaptor plate which makes the setup too tall to fit under the screen.
So I decided to buy a Edelbrock performer 4V which theoretically is the only intake that should keep it all under the screen and at least match the stock intake for performance on the stock engine. Upon inspection the port sizes are close to the same as the 2v and appears to be quite a bit smaller than the stock 4v.
So I had this idea that maybe if I ported the edelbrock out slightly, perhaps 2mm around each port and as far in as I can reach with the die grinder. Also I was going to remove part of the plenum splitter and remove some material in the plenum area to add a little volume. I was hoping that this would improve some of the top end performance and still keep the low down torque.
Alternatively I could just leave well enough alone as one would hope that edelbrock did their homework and found that their manifold performed better than the stock 4v even if their ports are puny????
Or I could just get something else? Keep in mind it needs to be the same height as stock. Something that is readily available. I was looking at the blue thunder but it appears slightly too tall.
Ideally I want it to still be driveable and have good 2nd and 3rd gear performance without having to wring its neck (nothing over 6000rpm). The exhaust has also been improved with ceramic headers etc.
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