415HP from 318ci IS POSSABLE!!

BJR Racing As for the 318 with the power that you want go to the 322 thread as it will make more than what you want. [COLOR=Green said
Not sure I understand what you mean BJR
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As for the heads on a 318 you would be backing up on the street with a 360 head. Use a 318/302 head and use the factory intake valve and use the 67-69 340 exhaust valves.

In what year and make did Dodge make a 302?

First without a flow bench your at a loss, as for the home builder your at the mercy of what whoever tells you and you have to figure out which way you really need to go. If your not oriented in porting then DON'T DO IT as you'll be backing up. I don't mean this sarcastic but if you don't have the experience 9 of 10 times the heads won't work, or will have to be reworked to get the results and hoprfully they won't be too far ported. I don't mean this to be discuraging but just being honest. It took me 5-8 years before I really had the hang of what I was doing to a set of heads and to make power. Then when I bought my flow bench I really learned what worked and what didn't.

Thanks for the input, I will port match and just remove the rough casting then...that alone should help a lot.

As for the cams and rollers in general and for street use I've never really thought about it. Most of the engines that I do with rollers are race engines. They make so many good designs now for street and with hyd. lifters why would anyone want a solid roller? Hyd. rollers have there limits, can they make the power that your looking for,..........sure, but with a $2,500.00 limit the cam and lifters are going to take most of the build, besides the machining.

IMO I would opt for a good Hyd. or a small mechanical but the mechanical will require fully adjustable valve train, but then I would use the adjustable on the hyd also. The cam that I'm using is a race only unit that I had custom ground, it needs compression and stroke to really make it work and thats what I did. This cam is not even close to being streetable, but I didn't intend for the engine to go there either. For a good street engine I would do this and you should have the power that your looking for.

Use a 318 block get a set of 85-89 pistons and square deck the block to clean. Balance the componets and use the 302 heads. Gasket match them to 360 ports on the intake(the 302's can be done without welding) eariler versions will need to be welded at the pushrod pinch. Use a K6901 cam from summit and a set of adjustable rockers and the appropriate pushrods. A set of good street hedders and a RPM intake and a 650 holley carb and you should have what your looking for.

I don't know much about the 302 heads...what I do know is the 360 J heads sport some good sized intake ports...so I assume that the 302 head is in between my existing 318 head and the 360 J design?...I do know that torque is made with a smaller valve and carb set up and if you go past the limit of no return, you could end up with a wimpy engine in the bottom end...so the 2.02/1.60 valve combo is too big for a 318?...what is so special about the 67-69 340 exhaust valves?

Thanx8)