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340 engine intake

  
Mopar Muscle
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340 engine intake

 
hockeydad1189 hockeydad1189
User | Posts: 69 | Joined: 08/07
Posted: 08/06/12
05:05 PM

i have a question on intakes i have a 72 340 engine mildly modified stock hi po exhaust manifolds my question is i have heard the ld 340 is the best intake followed by the rpm air gap then the weiland stealth .the problem i have is the range of the ld340  is 2500 -7000 the rpm is 1500 -6500 the stealth is idle -6800 .is the ld 340 to hi for a street car would i loose low end tourqe same question on other intakes i now have a 70 cast iron intake will either of these intake greatly increase hp  thanks  

drmopar drmopar
Guru | Posts: 1445 | Joined: 02/08
Posted: 08/06/12
08:29 PM

Sounds like some bench racing going on here. Hands down the RPM is the best all around street intake, tried tested and true..  

hockeydad1189 hockeydad1189
User | Posts: 69 | Joined: 08/07
Posted: 08/07/12
04:18 PM

more curiosity than anything i keep hearing how the ld 340 is the holy grail of intake for small blocks. iam going to change i was just wondering if i would see any gains .  

drmopar drmopar
Guru | Posts: 1445 | Joined: 02/08
Posted: 08/08/12
05:09 AM

I have drag raced with both. The LD is a good intake but has an issue with vapour lock in the heat of the summer. The air-gap does not have this issue and is by far the better intake..  

hockeydad1189 hockeydad1189
User | Posts: 69 | Joined: 08/07
Posted: 08/08/12
05:49 PM

has any one used a weiland 8022 stealth intake if so any good are ports for a 340 or 318 any opinons on it  

Budnicks Budnicks
Guru | Posts: 1497 | Joined: 08/10
Posted: 08/09/12
12:14 PM

Never tried the Weiand manifold, I would say use the Edelbrock Air Gap RPM if you want the best of both worlds, great bottom end for street-ability & great throttle response, plenty of top end power for your set-up, with out all the fuel/intake heating issues.... The LD-340 is a great old manifold, it can be used also, but block off the heat risers, to help keep the intake cooler, but the water passages, will still heat the front & rear intake runners, a cool dense charge of fuel, is best for all conditions... IMHO  
"Fill Your Library Before You Fill Your Garage" Good Luck  "Budnicks"

billsdartswinger billsdartswinger
User | Posts: 100 | Joined: 04/10
Posted: 09/21/12
07:22 PM

I have a 70 340 in my 73 dart swinger It has a 750 holley on top of a rpm airgap manifold....I have to tell ya I love the performance! You cant go wrong using the air gap manifold!!  

hockeydad1189 hockeydad1189
User | Posts: 69 | Joined: 08/07
Posted: 02/18/13
09:00 AM

i have decided to go with a edelbrock thunder series 650 cfm with a performer rpm i was going to go with a air gap but heard about a lot of problems in cooler weather.is anyone running this set up is performance good am i losing alot with out the airgap anything special i have to do to the intake,is carb big enough thanks