Good intake for towing engine?

[vandelay industries]

Proposed engine is either the basic crate 350 OR the L31 crate 350---which has 9.4 compression, roller lifters and 64cc vortec heads. i know a 383 or big block would be better, but i want to keep it low-budget for now.

It will be in either a 2WD 3/4 suburban or 2WD 1-ton crewcab, so i'm assuming the highest gear i can get is 3.21. And it's likely it could be as low as 4.10 or even 4.56.

Trailer will be an open 16' car trailer. Total weight of trailer (with car) is between 5000-6000lbs.

Desired speed is at least 65. Most likely 65-75. i'm thinking cruise rpm should be around 2200-2500. Terrain is not seriously mountainous, but not totally flat either......

Exhaust manifolds will be stock and exhaust basically stock.

Assuming that we're staying with a quadrajet (for now), would the Edlebrock performer RPM (high-rise) be a good intake manifold choice for this towing engine? Remember that we have plenty of vertical room under hood.

 

[Bent77]

Had real good luck using the ZZ4 GM intake, second choice would be the Edelbrock Performer (non RPM)

 

[sreidmx]

Rpm airgap actually worked well for me. Makes more torque than the performer does as well.

 

[runamok151]

It'd be a waste of money because you're keeping the stock heads, manifold and exhaust. You have to think of the whole system. You can't cram more air and fuel into the truck if there's no room for it to go through and out the engine.