[Redneck914]

I was reading on a different rodding site and somebody claimed that the Edelbrock Performer intake isnt that much of a performance booster over a stock manifold. Any opinions on this?

[Deuce]

There are no MAGIC ... 50 horsepower intakes ... Edelbrock or other brands either. A Edelbrock Performer aluminum 4 barrel intake is most likely no better than say the factory aluminum intake on a 69 Z-28 ... but it is better than a stock iron intake. Plus the weight reduction ( roughly 25 pounds on a SBC ).

Intakes need to be matched to the rest of the engine combination. The Edelbrock intake/camshaft/carb combination works great on most engines IMHO ... for all around driving/performance.

[GCD1962]

There has to be some improvement, otherwise Edelbrock would not have sold multi-millions of intakes over the years.

[Chevrolet4x4s]

i am pleased with my performer eps
Shane

[jimfulco]

I suspect it depends on the rest of the engine. On a stock 305, I doubt you'd see much high end gain, and your low end could be worse. On a modified 350, you'd expect to see a bigger improvement.

[acr]

A few years ago "Chevy High-Performance" magazine ran a long series of dyno tests, using various speed parts on a Goodwrench 350 SBC. They started out simple with a stock motor using a factory alum. intake w/ Q-Jet, then added dual Turbo mufflers, then headers, then a Performer intake w/stock Q-Jet. The motor auctually lost power & torque w/the Performer up to about 3000 RPM. As I recall, peak HP & torque gains were about 1 HP & 10 ft. lbs of torque @ 3600 RPM but the motor had about 10 more HP & ft.lbs. just past peak HP & torque. Interesting reading, you should be able to find it on the I-net.

[bigtim]

i love my rpm airgap

[JeffB]

That may be the reason you see more SBC Performers on ebay for cheap than other brands,but no matter what you choose everything has to match cam ,heads,etc. I saw an old test a while back with 10 different intakes and the Offenhauser Dial-a-Flow won.Offenhauser makes great products but they don't advertise so a lot of people don't know who they are.I have run the Dual-Port and they are a great street intake,stout low and mid range power and lower emissions and better mileage too.

[techinspector1]

I'm sure that angles and turns in the runners make some of the difference between intakes, but something that never shows up is the volume of the intake. Heads are chosen by the intake port volume, so why not intake manifolds?

Years ago, I built a 302 Ford for a swap into my Mitsubishi pickup. I just wanted a snappy motor for the street that would get good mileage, not a drag motor. I chose an Edelbrock Streetmaster intake with tiny little runners (I think they were even smaller than the stock 302 intake) and accomplished what I wanted to do. Throttle response was immediate and mileage was in the range that I expected. The motor nosed over between 4,800 and 5,000 as I remember. This was with an Isky solid lifter cam, 270 degrees advertised, advanced 4 degrees.