Hello all,
I've answered an ad on Craigslist, now I find myself working on a 340 project. I've got the experience (education too) to handle the job, however I'd like to find some more detailed info on these beastly little engines...
Here's what my goal is:
72 340 from a duster going in a duster w/ 727 and 3.55 rear.
Going for 9.5:1 to 10:1 compression, mild street cam with good vacuum, stock internals, unported "J" heads with 2.02" valves.
I'm taking the block down to the machine shop today to get it cleaned up and mic'd. It looks like it won't need any boring but I want to be sure before I order pistons...
As far as pistons go, I'm thinking a cast-replacement flat top w/ valve reliefs. Anyone have any recommendations? Keith Black vs, JE, vs
How about forged vs. hypers...
Camshaft... this is where I need the most help... I'm looking for a cam thats better than stock but has very very good manners... I want at least 15" of vacuum at idle... Doesn't need to pull past 5500. I'm thinking somewhere in the .470-.480 range w/ short duration. but I really don't know what these engines respond to. please help!
Also, if anyone could point me to a resource with tolerances/clearances (OEM and/or currently generally accepted as better) for bearings/ring gap, piston, etc etc...
Anything thats generally known in the 340 mopar community I need to know before I start buying parts and putting things together??
Thanks in advance!
Dan