Reply to "Manifold Question - Performer vs A331 Torker"

> I'm right in the middle of an engine rebuild and am using Edelbrock Performer
> RPM aluminum heads.

As others have noted, the Edelbrock heads have 2V ports while the Torker
is for 4V ports and the A331 is for Ford Motorsport high ports. The A331
ports are no where near the 2V port locations. You have several choices
for 2V intake manifolds. With the Edelbrock heads, 10:1 compression and
a stout cam, you have the potential to make over 400 HP. The best intake
for you depends upon several factors. If you need to fit under a stock
engine screen and need carb heat for cold start up, then I suggest the
Weiand Xcelerator single plane for 2V heads (not the 4V version). If
manifold height and carb height are not issues, then the Edelbrock RPM
Air Gap will work better. The low profile Performer 2V will need some
work in the plenum area to not be a major restriction.

> Also, if I go with either intake, should I use a carb spacer as well for
> better performance?

Yes. We typically see 10 HP with the right spacer.


> The car has big bore headers if that matters.

The collectors on the Hall Big Bores are too small. Exhaust is very important,
particularly the mufflers. The stock and Euro GTS mufflers cost 50+ HP on a
400 HP 351C on the dyno compared to a good muffler like a straight through
Magnaflow. With too small a carb, bad mufflers and the wrong intake manifold,
you can make a sweet running 400+ HP 351C into a lame one that makes less than
300 HP and gets worse fuel economy. I've got the dyno data to prove it.

Dan Jones