Intake Manifold Comparison Test

[DavidNJ]

For your information: http://www.network54.com/Forum/74182...nifold+Comparo

[Michael C Henry]

There are a lot of those Street Master manifolds on ebay.Not a lot of money as I remember.

[*13*]

Very interesting comparison! Thanks for sharing! I was really surprized to see the Edelbrock below both factory manifolds & the Police interceptor below the factory CJ. Wonder how they would all compare on a bone stock build. from the 60's or 70's

[DavidNJ]

The Performer finished second. He didn't test the Victor.

Some notes: he didn't port match; the Streetmaster was the only single plane/open plenum in the test; single plane manifolds may show better at WOT on dyno then they show at part throttle on the street.

[Monster]

Interesting results.............

I am having to rebuild my fe, and I have a Streetmaster which I though was leaving HP on the table. I have been considering changing to a Performer RPM or Victor (not sure that will fit under the hood), looks like I can spend that money on something else.......for now.

thanks,
Mike

[BFBurk]

Very interesting test. --------
I love it when Science and data show up anywhere. I have a Sideoiler with an Offenhauser Port-O-Sonic single plane. It had a 850 Holley doublepumper on it and I thought it was a dog at low RPM's. I put a Holley Pro-Jection 900 on it in 1994 and it has gobs of lowend torque and the top end seemed stronger, also. I had always thought of trying a double-plane just to see if it would be more tractible around town. Now after seeing your test I will stop playing around and just enjoy the Offy intake. I am going to start following future tests of yours. Good work!
Thanks

[Brent Mills]

Hey cool...I've got the top performer (Streetmaster) on my little old 390! Actually runs really strong.

[SCOBRAC]

You will lose a little drivability with the s\Streetmaster over the Performer. But it's intedresting how much lower the F427 placed in the group. Think the RPM Perfomer would do a little better than the Streetmaster but for half the price Streetmaster seems like a solid manifold.