That manifold may not have the same flow on an earlier 2bbl head 318.
Photon440, could you clarify this please.
the Eddy 2178 4 barrel intake or weiand 8007 with a 1406 is a vast improvement over the cast iron boat anchor egr factory intake. not to mention the weight savings. the mismatch between the ports is trivial. you'll forget all about it. that cast iron is the very first thing I ditch and have instant results.
I agree with this except;
1) The OE 4bbl. is actually a good intake manifold that should be able to be had on the cheap. Blocking off the EGR valve, IF it isn’t on the i take already is a simple home cobbled steel plate and correct high temp gasket. Inside the intake, of the 2 floor jets, 1 can be screwed out and a Allen head flat plug can be installed. The other floor jet may or may not be the same. If the floor jet is a simple cast in hole, a quality epoxy can be used to plug it up. Now the intake is as good as the earlier70’s units.
2) The Edelbrock Performer doesn’t perform any better than the OE intake. I do not know about the Stealth.
But I will say on such a low powered 318, the difference would be small.
3) I have a Weiand Stealth (8007 I think it is)
(1) I wasn’t too fond of the casting on several fronts.
No coil mount on the intake. I fab’ed up my own 6 pack like bracket and used an epoxy coil. (See below)
(2) I had to grind away on the outside runners to get the bolts next to the runners in. This could be due to them being ARP hardware, longer bolts than stock? IDK for sure.
3) Core shift was on the rough side.
4) The weight savings of about 25lbs. is the only advantage I can see. If 100lbs. Is a tenth gain in the 1/4 mile, then what is the actual gain on 25lbs.?
That intake was specifically designed as a mileage intake manifold. Designed, cast and sold during the gas crunch era. It was also available in a 2bbl. version.
Another intake on that level of the idea of more mileage is the Edelbrock Streetmaster.
Below is the sp2-p (318 2V) by Edelbrock in the 2bbl. version.
The Weiand Stealth below. Note coil position.