Dart 340 twin hood scoops

[YY1]

Anything that reduces the under hood temp is good.

 

[crackedback]

You are generally right, but I sold several 71 Duster with the scoops
ordered from the factory when they were new.

Several Stock Eliminator Dusters still currently run them.

Twisters Yes

340's, no. Lots of them got scoops installed at the dealership level.

NHRA probably allows them on any 71-72 car because the twisters got the scoops. Are they correct, nope. I'd like to find a 71-72 340 Duster with an original fender tag or broadcast sheet that has J54 on it. Never seen one. Seen plenty of repro's that have the number, no originals.

Have a good holiday.

 

[jos51700]

The later twin snorkel common scoop is more effective. But really only because 1% gain is better than zero percent gain.

As mentioned, air touching the hood is basically stationary, and the further you get from the hood surface, the 'faster' air is moving (in other words, vehicle speed).

Cold fresh air is better, but with no ducting to the air cleaner and no speed, the twin scoops are, as mentioned, heat release. I wouldn't be surprised if air flows OUT of them at freeway speed.

 

[Bodyperson]

The later twin snorkel common scoop is more effective. But really only because 1% gain is better than zero percent gain.

View attachment 1716343513

As mentioned, air touching the hood is basically stationary, and the further you get from the hood surface, the 'faster' air is moving (in other words, vehicle speed).

Cold fresh air is better, but with no ducting to the air cleaner and no speed, the twin scoops are, as mentioned, heat release. I wouldn't be surprised if air flows OUT of them at freeway speed.

A little gorilla tape and yarn might put some proof in that pudding. Your assertion is hard to believe but could very well be true.

 

[jos51700]

A little gorilla tape and yarn might put some proof in that pudding. Your assertion is hard to believe but could very well be true.

When I think about the ten square feet of grill (and underhood , via radiator) getting highway speed air at full blast, compared to a third of a square foot of scoop opening that's tucked up next to a wall, it's not unreasonable.

Especially since the scoops didn't lead to an air box or anything.