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Blog: MotorMouth by Kris Palmer

High School’s Secret Speed Trick

Saturday, April 26th, 2008

That last post got me thinking of high school. Remember all the things you believed back then?

In those days, my ride du jour was a 1974 Plymouth Satellite 4-door with 318 V8, license plate 369 44L. Good for 110 on the highway, or, uh, so I reckon, and held five skiers with full equipment. But for this car I had no speed trick–only a Pioneer AM/FM casette stereo with Jensen speakers and well-played tapes of Jethro Tull, AC/CD and The Who.

My good friend Ferg had a ‘74 Nova, yellow, plate PO8 261. And that car did have a speed trick, or so we thought. We’d heard that flipping the lid on the air cleaner–making it concave instead of convex–allowed more air and created more power.

At the scientific level, with dynomometer, gas spectrometer, team of MIT guys and some Snap-On Tools for disassembly verification, maybe a tiny bit. Overall, this probably didn’t give us any more oomph.

But we loved the idea that it did. We used to treat that trick like one of the prime switches in the Batmobile. We’d be out driving somewhere, it’d get late, the then-rural roads of Chester County would be quiet and we’d decide the need to get home by 12:00 required the speed trick. So out we’d hop, pop the hood, spin off the big air cleaner wing nut, and the deed was done….

Heh. Wonder where that Nova is now…. Probably melted back into a Suburban’s fenders, some weight plates, an iron and a waffle maker.

2 Responses to "High School’s Secret Speed Trick"

Dave G says:

April 28th, 2008 at 1:46 pm

When I was in high school, my ride was a 1960 Pontiac Tempest station wagon. With the cut-in-half four cylinder and rear mounted transmission, independent, and driven by a flexible drive shaft. While not the fastest set of wheels around, it was in good shape, and handled pretty well.

My best friend’s car was a 1969 GTX with the 440 magnum. Very fast, and very thirsty. Premium only, of course.

The trick depends on the air cleaner housing involved. If it was one of those that had a narrow snout that choked off airflow, then it worked. If the snout was of a decent sectional cross area, than it didn’t make much difference. I used to do it too.

Kris Palmer says:

April 28th, 2008 at 8:27 pm

Yeah, I was thinking once the engine bay got hot, you may pull a little more air in but if it’s hotter, difference may be nil.

My TR6 has the BOP 215 in it now and a few Tempests ‘61-’63 also had the little V8. These tempests, like yours, were transaxles–that would be a fun setup to play around with on a hot rod/kit car project.

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MotorMouth Kris Palmer, freelance auto writer and editor, blogs about vintage cars, the collectible auto scene and just about anything else that goes vroom.

Your favorite: classic car blog, antique car blog, muscle car blog, vintage car blog. Antique and classic cars for sale by owner.

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