318 blues?

[3404spdvaliant]

Swirl ports like magnums and 302's will have better power under the curve on a teen than a 360 head,and more torque. 360 head will definitely make more peak h.p,but at the expense of low end driveability and tq.

Only if your not a tuner.

 

[66dartgt]

I debated the same things about the heads on this engine, but decided just to go ahead and use them since the guides were still good, as were the valves etc, we're just adding some good used springs with dampers on them.

I know its giving up port velocity etc but on the other hand they are good enough to use as is, it came down to cost vs availability of a usable set. I know the CR will be dismally low as well, but free is free, and its not going into anything more than a daily driver, with certainly no preginition issues on regular gas !!

We'll be using a performer intake - I will not open the ports up to 360 size. So it should create some anti reversion at the head/intake junction, which might help a little too.

I've built motors sort of like this before, to get the most out of them - an insanely fast mechanical advance curve is whats needed to wake them up.

cheers !

 

[3404spdvaliant]

Do the timing thing for sure regardless, you'll be in good shape