|
|
#1
|
|||
|
|||
High-Rise vs Low-Rise Intake Manifold for 340
Hello,
I'm new to forums, so please forgive me if this has been covered. I cannot seem to get the search forum tool to work, nor can I view or post in any other areas except this one. I have a '69 340 from a Dodge Dart in my 98 Dakota. It runs great from about 3000rpm and up, but I am rarely at that RPM. I'm looking for a little more down low, like 1500-4500rpm, 5000 tops. I have a Edelbrock Performer RPM manifold, with a Hughes HE1423AL. The cam is ground for power from 1200 to 4800rpm, just where I want it, but I think the Performer RPM is robbing some low end power. I have a 5 speed in it also. The Performer RPM is a high rise manifold, do you think a low rise would suit me better? If so, which would you recommend? I was thinking about trying the Weiand Action Plus or the regular Edelbrock Performer. Thanks in advance for any advice you can give me. I think I made a mistake with the Performer RPM, and don't want to do it again! Josh 98 Dakota w/340 |
#2
|
||||
|
||||
Hey Josh,how are you running that in a 98? No computer it sounds like.A dual plane intake will give you better low end torque if thats what you want to know.You can also recurve the distributor to give you more advance at lower RPMs,try this first and if its still doogy down low switch intakes.
|
#3
|
||||
|
||||
Humm, Thats where that cam is rated to work in. Did you degree in the cam? Also , whats the rear ratio and tire size combo. The RPM isn't really out of range for this cam.
The cam does start a tiny bit lower than the RPM is slated for. But it should not be a problem. Also, what carb are you running or is it F.I. ? |
#4
|
||||
|
||||
I think the RPM intake might make a little less power than the performer down below 2000rpm, but I doubt it would be worth the small gain unless you could get one cheap. You would lose overall power. The performer is not much better than a stock intake. Other hi-rise 2 plane intakes will be similar to the rpm in low power. The 98 dakota weighs about 4000lbs and unless you have a pretty steep gear, it will be tough to make the 340 run with a lot of low end power.
|
#5
|
||||
|
||||
What JD siad. Also, in thinking, add a 4 hole spacer to the carb if possible.
|
#6
|
|||
|
|||
RPM performer
Adding a 1" 4 hole spacer to my 340 with the RPM performer made a big difference in the 2-3000rpm power/torque output. cheap test and tune - give it a try
|
Thread Tools | |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
SB 1972 Cast Iron High Rise Intake | s.mckibben | Rear Wheel Drive - Parts for Sale | 0 | 01-01-2008 03:00 PM |
Kick down linkage for high rise manifolds | Frank R | Performance Talk | 8 | 09-26-2006 07:45 AM |
High rise manifold is too high for throttle cable! | gagfitz | Performance Talk | 2 | 07-30-2005 04:16 PM |
hi rise throttle brackets | ZIPPY | Rear Wheel Drive - Parts for Sale | 0 | 03-01-2003 04:19 PM |
RPM Rise | Magnum Mike | Ram Truck Chat | 3 | 03-26-2000 06:43 PM |