Most efficient RPM range for PSDs
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Senior User
Joined: Dec 2006
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Most efficient RPM range for PSDs
Anyone with a fuel meter could tell?
If I would have to guess it is around 1700 RPMs, but thats just a guess.
I have seen some weird formulas for determining that.
If I would have to guess it is around 1700 RPMs, but thats just a guess.
I have seen some weird formulas for determining that.
Posting Guru
Joined: Feb 2008
Posts: 1,526
Likes: 1
From: Grass Valley, CA
Ya, i'd say 1450 sounds about right...
But with you're 410, good luck getting it on the fwy!
I've noticed that there isnt a HUGE difference between 1500-1800 R's, but going to like 2100 (fwy, stock tires and 3.55) starts to cost a little more. Seems to make almost a full MPG for me... (ex if im driving 55, i get 18.3, if im driving 70, im getting 17.5, rough estimates.)
But with you're 410, good luck getting it on the fwy!
I've noticed that there isnt a HUGE difference between 1500-1800 R's, but going to like 2100 (fwy, stock tires and 3.55) starts to cost a little more. Seems to make almost a full MPG for me... (ex if im driving 55, i get 18.3, if im driving 70, im getting 17.5, rough estimates.)
Tuned
Joined: Jun 2004
Posts: 472
Likes: 4
From: Goodyear, AZ
1 mpg not really worth 15 mph diff tho, since it would take me almost 10min longer to get home, truck is running that much long which probably equates to lil bit more gas, plus as they say time is money so...... I'll just go faster... 
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