I must make some corrections. When I responded I was on coffee break at work, so I was working from memory and I do not remember as well as I did once upon a time. I must be getting old... but I suppose that beats the alternative. Anyway the max lbs/min should read 45.6, not 47.5 and that takes place at 2.55 p/r not 2.4. The HP numbers remain the same but these numbers are theoretical and must be supported by dyno and drag strip results. That will have to wait until spring when I start driving the beast again.

Cheers,
Ken

Is that RWHP or crank HP?

I am at around 1.7 pr now, and it is getting wild. I will limit mine to 2.0 pr. No intercooler yet, but AEM meth/H2O injection in progress. My goal is 350-400 crank HP and totally streetable, durable, and 25 MPG in a 3300 lb 68 Dart. 300 crank HP tested on 1.6 pr.

Lou

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Home of Slant6-powered fun machines since 1988

That is flywheel HP and only theoretical at this time. You are right about the ride getting wild...fun isn't it? Your HP goal is realistic.

Keep it together,
Ken

lou,

Some more info that I should have included. My HP numbers will differ from yours since I am using propane fuel and the BTU/lb is less therfore I have to put more lb/min through the engine to achieve same HP. I decided to use propane due to fuel cost ( half of gas price here ) and ability to have much higher static comp ratio ( 9.8 :1 ) and still run high boost pressure. So far I think I made the right choice.

I would like to here more about your project.

Ken

See this thread for more info. I am admittedly terrible about posting pics...

http://slantsix.org/forum/viewtopic.php ... sc&start=0

I pretty much design all my street car motors for pump premium. I like to drive all over the country and not worry about filling up with unusual fuels.

Lou

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Home of Slant6-powered fun machines since 1988

Actually, propane has more energy than gasoline on a mass basis - 19,900 BTU/lb vs 18,676 BTU/lb, LHV. It just has a lower density so, on a volume basis, a gallon (or litre) of propane has about 74% of the energy of a gallon of gasoline.
http://www.afdc.energy.gov/afdc/pdfs/fueltable.pdf

Interestingly, natural gas has even more energy (20,263 BTU/lb) than propane but natural gas is often quoted as having about 1000 BTU/ft³ which throws many people off.

Thanks Frank,
I stand corrected. The volume basis is what I was considering but communicated it incorrectly.

Ken

Hey Ken,
I'm in little old Abbotsford also
awesome car! hope to see it driving around in the spring!

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Franklyn
1965 Dart GT - 1949 Plymouth Special Deluxe

Hi Franklyn,

I am happy to hear that you are in Abbotsford. I do not know of any other sl6 enthusiasts around here. We will have to meet sometime.

Merry Christmas,
Ken

Agreed
Hope you've enjoyed our "snowless" christmas here.

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Franklyn
1965 Dart GT - 1949 Plymouth Special Deluxe