Posted By: mosweethemi
small block intakes - 09/23/13 05:20 AM
Hello I have two small block intakes one is a LD340 and the other one is a LD4B , One better then the other one ???
Thanks A REAL MOPAR MAN !
Posted By: 340SHORTY
Re: small block intakes - 09/23/13 05:26 AM
IIRC the LD340 has large intakeports and the LD4B has small ports..
Posted By: racealittle
Re: small block intakes - 09/23/13 03:44 PM
The LD4B is pretty much a copy of a stock 340 intake, with a few improvements. Yes the runner size is a little smaller at the intake face to the head. That can be easily opened up if you desire. It also allows the easy use of the aftermarket carbs without the spacer/adapter that may be required on a stock 340 intake.
The LD340 has a much larger plenum, different runner design, and larger 340 size intake face to the head openings. It can also be easily modified to accept a Thermoquad without an adapter.
The real difference in hp or torque depends on your combination of parts and how you will be driving the car. Otherwise there is not as much of a power increase between the two with a driver.
Both are really good intake manifolds. The LD340 can squeeze a little more performance out of a more aggressive engine combination.
