Building A 360

[plydusted]

I AM BUILDING A 360 FOR MY 74 DUSTER. ITS 30 OVER 8:5:1 PISTONS EVERY THING ELSE IS STOCK. 4 BARREL PERFORMER INTAKE 650 HOLLY.AND HEADDERS. IM TRYING TO FIGURE OUT THE SIZE OF CAM I WOULD WANT TO PUT IN IT. IV GOT A STOCK 68- 318 -IN IT. 4 BARREL INTAKE- 650 HOLLY -AND HEADERS. IT NOW RUNS HIGH 14' SHOULD THE 360 DO BETTER OR SHOULD I PUT THE 360 HEADS AND A GOOD CAM IN THE 318.

[rumblefish360]

I'd use the 360 and sell the 318. The compression is low in the 360 for starters. A slight milling of the heads would really help. A bump to 9.0-1 or 9.5-1 would be great.
You state that your 318 is running high 14's. I'm guessing you want the 360 to run at least a second quicker into the 13's. If not low 13's. I would do the following...

Scrap/sell the Performer with the 318 and pick up a Edel. RPM intake. (Or Stealth)
Install 2.02's and do a little bowl work to the heads with the milling. The bowl work, not neccery, but would help out a bit and provide room to grow with incase your cam gets bigger.
For a cam, it depends on a few things. A basic recomendation I could give would be a 340HP cam from MoPar. The replacement grind has a chop to it and should provide a little more top end.
This is a mellow cam (ethier cam) that'll get the job done and be easy on the street manors.

Spare parts?
Useing the 360 cam in the 318 isn't a bad idea. It's just that it's used and I wouldn't bother when there are so many grinds out there to chose from.

[plydusted]

do i get new pistons or mill the heads or both? for more compression. iv already bought the pistons i belive to be 8:5:1 i have a holly street dominator -single plane- too. do you know if its any good for street. and whats wrong with the performer. it seems to do really good but then again thats the only one iv used.

[440cj]

If you use the Performer on the 360 you will have some restriction problems as the Performer has runners sized for the 318, not 360. You would have to spend some $$$ enlarging the intake runners and might as well apply that $$$ to the Performer RPM and be done with it. The RPM also helps the ENTIRE powerband if you have the other parts reasonably matched. 440cj

[rumblefish360]

Yea, what 440cj said. Theres nothing wrong with the performer. You can open up the ports yourself. A die grinder will do with a port matching into the runners approx. 1 inch.
However the RPM just simply rocks over the Performer.
I have no exper. with the holly street dominator. I have seen it before and the owner loved it for what he was doing. Just a little upgrading.
Since you allready have the pistons, just mill the stock heads. You'll be fine.

[plydusted]

thanks for all the help ill try the dominator see how it runs then ill by the rpm thank again