62cc closed, heart-shaped combustion chamber. Bowls opened up to the base of the valve seat, intake left rough to help fuel suspension, valve guide bosses rounded and smoothed.

This is with the camera about normal to the intake flange to show port bias.

Looking more down the intake port towards the valve guide.

Exhaust port is significantly different from earlier castings. It has a better shape, is located higher on the head, and features a raised floor as often implemented by Bob Mullen (creator of the W2). Earlier ports exhibited retrograde flow along port floor. Hump in roof is part of water jacket.

didnt you say that you picked those up at auto zone for some dumb-cheap price?

Yup, AutoZone specials. They didn't look like that when I got 'em though, and most of the work that had been done on the valves pretty much sucked. What I really wanted was those castings.

what year/type of 318/360 did they come on?

Beginning about '86 and going through '91, on 2bbl 318's. There is one other casting number that's a nominally identical head; don't recall what that one is right offhand. Has the large pushrod holes for roller cam. I asked for heads for an '88 pickup.

i missed the original breifing if you have one on these heads, i know search newbie. but i wanna get the answers straight from the man, are these the best bang-for the buck heads that came on smog era small blocks? whats the CC's for a stock head? i take it that with a little port work, that the head does desent, since its from the designer of the W2?

Best heads for a 318 bar none, IMHO. Best heads for a pre-magnum 360 are the 308's. These 302 heads are 62 cc's and have small volume, high velocity - high swirl ports. A 318 with these will make 330 hp (http://www.geocities.com/alwest_83/318.html ; also a different writeup on similar combo in an old Hot Rod magazine). The 302's don't work particularly well on 360's; at least about like the earlier heads. The 308 heads have a larger port volume, but are still high velocity and high swirl design; just optimized for the 360. The 308's aren't real good on a 318, either. Standard combustion chamber volume volume for earlier heads around 70 cc's.

I assume from your username you've got a 408? If so then the 308 head would definitely be a better thing to start with. I'd say port them, and use 2.02/1.60 valves. I have a set of porting templates for that setup if you want. You could also get in touch with Hughes for custom head work; I'm sure they can do something specific for your application. http://www.hughesengines.com/www/hughesengines/heads/hp_sb.asp

more of wish i had a 408 i got the starting block though, a dog of a 77-360:rolleyes: that need a rebuild real bad

dont they all.....................:D

that they do, also is it me or does hughes stuff seems expensive?

They seem kinda pricey to me, too. It does appear to be pretty good quality though. If I was building a pro-stock or a street sleeper more of their stuff might have found it's way into my rig - but this project's budget has to include axles, lockers, doubler, tires.... too much other stuff to put too much $ in the engine. And no smallblock in a truck pushing 7000 lbs at the curb is ever going to win races; I'm just after a level of performance that makes me happy for general-purpose use, on a restricted budget.

Lloyd, Slicked up exhaust ports only like you're doing some time ago on a set of the older castings I used on a 360 and ran into a problem with running ungodly rich at idle (about 1500 rpm). Had to pull em back down and slick up the intakes as well to get good transition. Not sure how much you're buildin into your motor so it may not be a problem for you.
I do understand what you're trying to do with fuel suspension as that is what I had in mind at the time myself, but sometimes you gotta do things that you can't get to ad up. Hope it works better for ya than it did for me.

Thanks for the tip; I'll keep that in mind. It should be back on the road this weekend, and I've got an O2 gauge, so we'll see. ;)

Edit
That first pic really makes the intake look much rougher that it actually is; probably due to direct sunlight. I think the other two give a better idea of the surface roughness. Intake ports were finished at 80-grit after the carbide, the exhaust went 120 followed by the buffs.

I assume the 302s from autozone are used castings? I have been looking for a pair of 308s damn hard to find around here, are the 308s the heart shaped combustion chamber like the 302s? I am building quench 318 and went with the magnums, they are easier to find for me.

Yes, the autozone castings are used. No, the 308's are an open combustion chamber like the earlier heads - they just have the high-swirl ports optimized for a 360. You can buy new 308's from Mopar Performance in various levels (ie. bare, assembled, ported, etc.) IMO this would be better than the autozone route, and if I could've bought new 302 castings I would have - especially after going through these and seeing what their semi-trained monkeys did to them. Autozone's only a reasonable option for heads if new castings aren't available and the junkyards are bare.

If you do buy from one of the big distributors I'd recommend Mancini, and discourage trying RPM Moparts and his associate in GA. After I resolve the current issue I have with them I might post details.