If it ran at 6.65 pounds per cube, it would weigh right at 2100 pounds with a 314" engine. At 160 mph the Moroso calculator puts it at 660 hp and about 685 for an E.T. of 8.41. Still pretty impressive number for a mill that small IMHO.

If those ported W2 heads made 900 hp back in the day I'm wondering why nobody ever copied them and sold that combination of rectangular W2 heads with matching intake. The stuff that Mopar sold over the counter never got close to 900 hp back then.

I remember in 73 reading an article saying that Jenkins' 331" SBC in the vega was dynoing at 585 hp, considering the Iron heads of the day that's still pretty impressive.

I remember Darrin Morgan saying that normally aspirated the limits of a 2 valve engine iwith today's technology s approximately 1.65 lb/ft of torque per cube (and 1.3 is generally considered a very good street engine), but it's unlikely the wedge (or many any other) motors of that time were anything close to that.

In the FABO article on Gliddens Arrow I told of my friends car running super modified (comp), he ran 2 engines SB Chevy, 266 and 331, 266 ran 8.70s 331 ran 8.0s @ 3100 pounds. Wallace says the 266 is 835 hp and 331 is 1074 hp. Verified these numbers from him today.

When was this guy making these kind of numbers?

Small cube big bore short stroke motors today that spin 10-11K can fairly easily make 3-3.2+ Hp cube. I generally believe the short stroke allows for more of an RPM spread between peak torque and peak HP.

As with any other piston engine, after maximum VE (torque) RPM is achieved the bottom end acts like a friction brake trying to slow the crank.

What's really impressive to me are those Australian CHI Ford Cleveland heads some of the Aussie pro stockers run.... they are super impressive and make very similar HP/cube as our 500" NHRA pro stockers.

I'm thinking the unrestricted NASCAR motors are getting up near there too now, plus they have to live for 500-600 miles!

Back to ‘stock’ 340s, I’m putting together a 70 Duster for stock with the 340. I’ve talked to a few running these cars, picking their brain thing. One gent who has raced his 71 since new turns his 7500 when heads up 6500 in bracket mode. Mid to low 10 sec ETs, he said it’s all about the valve springs since all componites have to be same weight and NHRA approved replacement. Makes you do a double take when hood is up and there’s a stock looking engine with cast iron heads and intake with an AVS, running that fast.

Are you buying the engine or building it?

I think Bob ran 314 cubes because he could get the most favorable power to (NHRA Factored) weight for a wedge head Pro Stock in 1979

Another huge advantage to the Arrow was it was narrow and had so much less frontal area compared to the typical A or F body or even the Camaros and mustang II's of the day.

I can't remember the first Fox body Mustang Pro stocker (maybe Nicholson ran one?) but I think that body style debuted in late 78, but the Arrow was still slicker than anything the competition was running. It almost looked like a Toy compared to other cars going down the track.

And for 79 I think Glidden ran the Fairmont instead of the new Mustang because back then I believe there was still the "Tiuana Taxi" weight break for anything over a 105" Wheelbase. It's interesting to think how cool it might have been for Glidden to have run the Volare....but Ma ran out of $$$ and went into Bankrupcy.

How many RPM are the Aussie Pro Stocks turning?

I've always been fascinated by high RPM motors< I remember the first time I ever saw the tachometer of a turbo F1 car, the sweep started at 4000RPM !!!