Thanks for the reply, my LD has the TQ mods plus when I got hold of it the WHOLE divider had been removed along with just about everything else in the plenum, it's not a pretty sight, I'm thinking the mods haven't helped it. Its in a 68 Dart has around 10.8 or 9 comp Eddies at mid 280's hyd / roller [email protected]" 1.6 rockers 999trans and 3.5 gear, It's gone 11.50 in really good air, it could probably use some more cam but I'm old and grumpy and more cam will drive me crazy. I'm thinking if there might be a bit in the AIRGAP for me I might grab one.Do yourself a favor and make just one thread or you’ll be jumping back and forth between threads. It tends to a bit convoluted when there’s multiple threads on the same question in different sections.
A copy and paste from the other thread;
From what I remember, there was a small gain not worth the price. A few fellas called up Edelbrock and asked about this very thing. According to what they were told, it wasn’t really worth swapping. But there is a gain. One of the things to consider if you’re thinking about this is the intake remains a little cooler.
Eventually, all intakes get soaked with heat. The RPM-AG is a little less.
I have run both. My LD-340 was modified via the MP book’s instructions. A milled divider and opened up to use a TQ. It was a very power intake. When the TQ was at WOT, it was a screamer. Between the two, I’d need a dyno to tell you which one was better.
The mods helped it BUT you’re NOT taking advantage of it at all, not one bit. The RPM will be what you need with that tiny camshaft you have. No doubt!!!Thanks for the reply, my LD has the TQ mods plus when I got hold of it the WHOLE divider had been removed along with just about everything else in the plenum, it's not a pretty sight, I'm thinking the mods haven't helped it. Its in a 68 Dart has around 10.8 or 9 comp Eddies at mid 280's hyd / roller [email protected]" 1.6 rockers 999trans and 3.5 gear, It's gone 11.50 in really good air, it could probably use some more cam but I'm old and grumpy and more cam will drive me crazy. I'm thinking if there might be a bit in the AIRGAP for me I might grab one.
Ahhhhh, the standard MP dual plane. A copy of the early 340 intake. Surprisingly good!I liked the LD 340 better. I found this aluminum intake pictured and like it due to being able to use the factory carb and choke and has the coil mount. lso the same factory height
View attachment 1716035259
I'm down under, the LD has other problems as well it looks to have been pretty badly corroded in the water ports and was welded then machined, by a blind person by the look of it, it is now 'low' at 5/7 ports , trying to fix it is $$$prohibitive, for me anyhow, I'm over it. Thanks for you thoughts on it.It’s fixable with a tig welder
I'm down under, the LD has other problems as well it looks to have been pretty badly corroded in the water ports and was welded then machined, by a blind person by the look of it, it is now 'low' at 5/7 ports , trying to fix it is $$$prohibitive, for me anyhow, I'm over it. Thanks for you thoughts on it.
I had a very similar street combo, except with a manual trans.The cam was a Hughes 223/230/110, and the intake was an AG. I loved that combo; gobs of low-rpm torque, a solid midrange and adequate top-end.Thanks for the reply, my LD has the TQ mods plus when I got hold of it the WHOLE divider had been removed along with just about everything else in the plenum, it's not a pretty sight, I'm thinking the mods haven't helped it. Its in a 68 Dart has around 10.8 or 9 comp Eddies at mid 280's hyd / roller [email protected]" 1.6 rockers 999trans and 3.5 gear, It's gone 11.50 in really good air, it could probably use some more cam but I'm old and grumpy and more cam will drive me crazy. I'm thinking if there might be a bit in the AIRGAP for me I might grab one.
Thanks for your thoughts, yeah it seems the airgap is out of stock everywhere I look but I wasn't planning on going with the china one. The best price I can see her in OZ was from Amazon believe it or not, but they have no stock either, [not a cheap option to ship from US] I've ordered from them and they will bill me and send when they become available. Don't have any pix of my LD , Cheers.Any pictures of it so we can see what you are talking about? If it needs a ton of work might be better to get an Eddy air gap. But they are both great intakes, I think they are rated as the best 2 manifolds you can buy for all around performance. I have an air gap on my 69 340, stick X heads, MP purple .509 can and a 750 VS Holley and it works great. I also have a nice LD340 that’s for the old Direct Connection mid for a thermoquad, haven’t tried it yet. If you go air gap….don’t cheap out and get a knock off China version, get the one from Edelbrock. Another thing to consider, if “down under” shipping might be a lot for you…could use that $ to fix your old manifold.