318 hi po parts

[HemiMk]

I was wondering about adding performance to my 78 318 rebuilt block with the 73 original heads and intake, etc. from my 1973 dodge charger coupe.  Besides 4 bbl carb, alum. intake, hooker headers with x pipe and magnaflow custom 2 1/2 exhaust.....What else can i do to max out my performance levels but still get livable gas mileage...

Any response would be helpful
Thanks alot

HemiMk

[HemiMk]

Any one have any info

[Plumcrazy]

A MP camshaft #4452757 or something very similar from another manufacturer would be my next change.

[Rocky]

Upgrade the heads.  I'd recomend the Magnum swap, especially for a 318.

[HemiMk]

Thanks

[HemiMk]

Do the Magnum Heads have too big of intake, exhaust valves and will mess up compression???

[Rocky]

The Magnum heads are the same for the 5.2 (318) and the 5.9 (360).  The combustion chamber is about 10cc smaller on the magnum heads.  It should be a great improvement over the '73 heads.

[Chryco Psycho]

the other option is the highly effecient 302 castings from 87-92 truckengines , they have a smaller heart shaped chamber & are a high velocity head

[HemiMk]

Good point....Thanks for the info....

HemiMk