390 vs 408
You bet that 390 is rare,most people don't even bother dumping big money into 318's...mild 440 no problem for a 360 built right,never mind what a 416 could do to it..you see i actually RACE my car so i know EXACTELY what the 360 and 416 run,no speculations here..only timeslips to prove it..:-D:-D
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You guys need to READ the original post......... Your starting to sound like a bunch of chevy guys.
Again, the ONLY reason I even posted here, in this thread, was because I ACTUALLY HAVE A 390! AND not only do I ACTUALLY HAVE A 390, it is BUILT FOR A REAL CLOSE TO WHAT HE IS WANTING......
READ.......
I'm having troubles deciding wheter to build a 408 or a 390 I will bring some thoughts and hope you can help me choose!
Pros and cons for the 390
+ Already have the 318
- Less cui
Pros and cons for the 408
+ More cui
- Engine will cost me approx 600USD (I live in Sweden)
+ Cheaper pistons
Other important things to have in mind
I want to keep as mild gears and stall converters as possible
It's a daily driver
A 727 will be parked behind together with a 8.75
It will be driven hard
Fuel economy isn't a top priority but it will be driven a MINIMUM of 60kilometers per day so the more mpg the better. And above all, reliability!
It's a '66 Dodge Dart
Questions
How much power difference will those 18cui make?
Will the 600 USD it'll cost to buy the 360 even the cost out? Or will one or the other be cheaper/more expensive? Oh and the goal is approx 500 horse at the crank
Any good suggestions on parts? I'm 18 and no millionare so it's in a budget but I'm here to teach those plastic and turbo-loving guys and gals that nothing beats cubic inch!
Is the 500hp@crank possible while maintaining idle and mild gears?
I'd rather have torque than horses, what will make those ftlbs show themselves?
OK, hopefully you read that......
I think that this is getting a little personal.
Every time I bring up a small port head, stroked 318, it gets personal. SOME people don't understand that there is a BIG DIFFERENCE between MAX POWER OUTPUT, and what someone wants. Every argument against the 390 I am aware of too, but, HE HAS A 318 ALREADY. I built mine with MPG in mind, the smaller bore does do better MPG wise, and the closed chamber small port heads help with MPG, and low end torque, not to mention the small bore and closed chamber heads help with detonation, something that I am worried about considering the engine run WOT for longer than any of your cars, way longer, minutes and minutes at times. In his case, big port heads would be better, since he doesn't need the 2.5K and down torque like I do.
And for the street, the 4" stroke of the 390 will offset the valve shrouding. Hands down.
READ his post. And remember, I HAVE a 390........... :munky2: