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When I was planning my 340 build I was 100% set on the xe268. Plans changed when I got a great deal on a stroker. Now 340 is in the garage waiting on a home.

Picked up a set of 2.02 J heads with new guides but no valves or springs for $100. Was that a good deal? Starting to think I overpaid now that I am looking at valve prices. I think these will just be used as a backup plan. I agree with you all. Might just run the J heads that came with it as...

Just got a good deal on a 408 stroker. Had a 340 with x heads I was planning on putting in but now change of plans. The stroker came with standard 1.88 j heads. Originally I thought i would sell x heads with the 340 so I could get top dollar for it and just port the j heads but that doesn't...

Oh if I go with the stroker I will be shooting for a lot more than 400hp. 400hp was just that number that was a little past where my 340 was gonna be and I was wondering what I could do to get it there.

My impression is that he hasn't worked on it. Not real sure though. That is why I am going by there Monday. He was busy when I called him so ran through it quick As for the drive train I was planning on beefing up my 904 at the recommendations of members here over the 727 I have. I am also...

Great advise. Thank you. 400hp was a number I felt was attainable on my 340 so wanted to get close to it. I don't know much about the ins and outs of a stroker. That's why I am here posting this. I knew without knowing more it would be hard to say if it is a good deal. Really I guess I just...

Good to know. He didn't say so I am guessing cast or he would have said forged but who knows.

Ok just called him. I am going to go by Monday and look at what all he has but it basically sounds like a short block with heads Here is what he listed Aftermarket eagle crank Aftermarket pistons Cam (not sure what cam) Comes with heads with roller rockers. He said rockers are in ok shape...

Kind of what I am thinking. I have everything to finish this 340 except a carb and maybe a cam depending on what is in it now. While the 340 is there he was going to pull the cam and give me specs. The 340 I have there was rebuild 10 years ago and ran for a month or 2 before the guy put a 360 in...

No number matching going on in my build. Pulling a 318 from my 72 swinger for the 68' 340. And the main reason behind not wanting to port the heads is in my mind the x heads are more valuable to someone in stock conditions so should I ever decide to upgrade to aftermarket I could sell the heads...

So I have my 340 in the shop getting new rings and bearings and a quick once over before I put it in my dart and we started talking power. I really want to get close to 400hp but don't know that I want to port my original X heads and don't really want to get into spending a lot on a stroker. He...

Actually gonna be 3.73 gears running a 904. Going for 255 tires. Have not looked at suspension much yet but know I need to. Gonna be a street car with occasional trip to the track

Thank you all for your help. This is my first build and I am learning a lot every day.

Reason I asked about the compression is when I bought the motor I was told it was recently rebuilt (sat for 10 years) and it was 10.5/1 compression.

Ok so if I wanted to get closer to 375-400 porting the heads would be the next step? Would you port x heads or because they are a valuable head would it be better to sell them and buy different heads? Rocco, where do you get the compression of 9.25/1.

Pretty much what I thought. Sounded a bit optimistic.

Ok guys. Took the heads off and the cylinders had some lines on them. Nothing bad at all but I figured while I had it out take it to the shop and get a hone and new rings and bearings. The cam looks brand new and we are gonna see what is in it. I have read the dyno derby article and it said...

that sounds really good!

Thanks again guys. Power range I am going for is right there around the 330-350. Really just whatever it gets out of the combo listed. We are gonna inspect the motor this week. If it needs to go to the machine shop I might rethink the build and go for more power but for now it is just...

thank you everyone for the input. I have done a lot of reading this past week and there is a lot more to continue to read. One more question: the transmission I bought is suppose to have a "small" stall in it but I have no idea what small would be or if it really does. That said, should I...

I was gonna get the ld340 but then I read where the RPM Air Gap was just as good. Then I found out my dad had one on a 340 he has sitting. He will not be using it for a long time and said I can have it just got to replace it when he needs it. If I know him and his projects i have a long...

checked it out. Does not have a roller cam

I am pretty sure it was dirt track racing. Don't know if it was blueprinted or not. Unfortunately I don't remember what he said about the cam or what would be allowed in that class. I bought the motor 8 years ago with intention of building this dart. Life got in the way and now I am able to...

What would you suggest I search to find other 340 builds? I am being serious with this question because when I search 340 build I get pages and pages of threads not pertaining to this. For what it's worth I am considering the following: Xe268 cam 750 carb (have not started researching this...

Starting to buy parts for my 68' 340 to put into my 72 dart swinger and looking for guidance or suggestions. Motor has x heads and not sure about the cam but the motor was built for stock class racing 10 years ago so guessing not much. (Ran very little and the guy put a 360 in. Been...