compression or flow?
Thinking of a cheap build with avaiable parts that i already have.
360LA block with H116CP speed pro .030 over pistons, .005 in the hole.
Set of Edelbrock untouced (used, not ported) RPM 63 cc heads Quench closed chamber)
.036 head gasket... comes up as 10.6 static compressio.
4 speed in a dart. \
I know i need to be careful picking camshaft, but will 10.6 be too much compression for pump gas?
Hot street motor.. headers, 355 gear ..maybe fuel injection...
I have never ran aluminum heads.....
I have some W-2 iron heads (70 cc and no quench, Open chamber, ported .5 point dtop in compression)and all it take to run them except pushrods.
So the question is do i give up the poeted W2 flow for higher compression and quench?
what difference will either make?
255/70-14s are all that will fit in the factory tubs of any 67 up Dart. Criminy a half-decent stock 318 will smoke those all the way thru First with a 4-speed and 3.55s
But yeah, alloy heads will let you run the Scr up outta sight.
I have run a set-up about like what you are contemplating, to nearly 200psi on 87E10, so there's that. The Scr was 11.3 and the ICA of the cam was around 60 degrees, with a quench of lemmee think ....... 028 or maybe a lil less.
Yes on 87E10.
IMO the Eddies are more than enough in a hot-street-Dart with factory tubs; and you'll need Caltracs or similar.
Try and remember that
on the street,
some 90% or more of the time, yur gonna be running under 4000 rpm.
and
I mean, 3.55s and 28s, in
Second gear, will get you about 12.2 mph per 1000rpm;
so 4500 is 55mph, 5500 is 67, 6500 is 79mph. So how often are you gonna run past 5500?
In my combo, I actually installed a bigger cam and a thicker headgasket to give away some cylinder pressure. I'm currently at 10.9 with a Q of .032, and last I checked, pushing over 180psi. I had to install a lower starter gear to get back some of the torque of the previous combo, but the top-end was a lil more funner.
I too am running 3.55s.
I highly recommend NOT to run the Mopar 292/108 cam, as, in my combo, it did not like those 3.55s. However, with 4.30s it was pretty good.
Another thing to think about is how slow can your car drive.
With 3.55s, 28"tires, and a 2.66 low gear, 700rpm is 6.2 mph, no slip. If you want to go slower, yur gonna have to figure something else out.