390 vs 408
Your a real asshole, you know that? (If you didn't, then I hope you do now.....) I left it alone, and yet, you cant. having fun?
So 360Z28, do you reckon those 302s will flow enough to feed a swept area of 390 cui? Sorry to sound like I doubt you, but I do!! LOL!
Yes, they will, mine do, you act as if it wont run.......... It will, may not be what the OP is looking for tho...... He already has 360 heads, so the point is moot anyway.
Reason? - Ive been told by experienced people on this board that 200 cfm which is about what you'd get at .500 from a set of 302s will never feed that size engine well enough and I'd be leaving plenty of HP on the table.
Exactly, lots of HP over about 4500rpm, TONS at 6K, and the 2.02 valve screws up the 302 head flow to boot.
Cheap......... Buy some real pistons.
Cast or steel? Which rods?
Comp 282S cam 245/250 @.50
Thats it?
360 cast heads that flow 243 @.550 (2.02 valves)
And you've been ranting about head flow, lame numbers, have wild&crazy port them or something.
Compression will be about 10.2:1
What cc are your heads? Flat tops at zero deck? Try your math again bucko.
It comes down to this....................
The original poster HAS a 318, he HAS 360 heads. I said, gee, I HAVE a 390, it runs great, and some internet engine builders junp in, and try to find any reason why he needs to buy a 360 block, facts are, it would be a waste of money, right? I think so, then, you get the 302 head debate, blah blah, some nitwit said my best advice was "ergh".......... This thread is ridiculous.
To the Original poster, build the 390, you have the major pieces you need already, mine has lasted under extreme abuse, with stock 318 floating rods even, it makes great street power, jerks your head back with a stock TC, and lopiddy lopes with good vacuum, MPG, and halfway easy starting. I wish Moparmal luck with his 390, it's is nice to see them being built, lots of potential in the little bore, and a lot of advantages with it on the street.
I am done here, if anyone has any questions, wants pictures, wants to know where I had to cut the windage tray, what pistons I used, cam, what pistons broke and caused me to sleeve my block in under 1K miles, cam, springs, whatever, I have in my 390. (A real one, not a dream one) feel free to PM me.
