Recent content by Mo-Par

268 or 276 should be a good choice on the street with what you have. Did you figure out where you would be on compression with that set up ? That would help in making the final choice for me.

tire size,gear ratio , trans / tq converter ?

Strong,light and good rings. They are not cheap but you get a very high quality piston for your money.

I have always had the best luck with Autolite plugs in any brand engine.

Good question. lol I will pull the stock pulley off the 318 if I get a chance this week and try it out. it is supposed to. I have not gotten that far yet with the rebuild .

Summit has long cutter sets and a sand paper kit with arbors.

73 Dodge Demon

Pulling the plugs and isolating the problem is good advice. Perform a cylinder pressure test while you have them out. A vacuum test may help also. A weak spark to one or more cylinders due to a bad plug or wire ? Valve seal or valve guide problems ? Good luck and keep us posted.

I would drop down one size on the Lunati cam. The longer stroke 360 will make plenty of torque to pull the gears and convertor you have.

I went with the balanced SFI one from Summit for my internal balance 410 that oldmanrick posted a link for. I think its a great choice for the money.

I found an 8-3/4 with 3:23 sure grip for $325 on craigslist out of a 69 dart. They are still out there if you are patient. Same with the 8-1/4's.

Pull the plugs and do a compression test. Otherwise you are just guessing until then and there really is no way of making a good cam selection.

I would run 3:55 gears with that cam. Otherwise it will seem a little lazy .

Fix / tune what you have before making a cam swap. I think you have a good combo that needs dialed in.

The Performer RPM works nice with the cam you have. The LD 340 would work well also.