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Look about feeling stupid! I have been having a problem with my Dart smoking at WOT. At half or three quarters throttle all was well, but when I punched it I could spray for mosquitos. I went over everything , but could not find a problem. I got a brain fart the other day and removed the air...

I am thinking of putting Metanol injection on my 340 to control knock. It has 13:1 pistons in it and it does NOT like the fuel I can buy here in Canada. I thought about pulling the engine apart and putting new pistons, but the motor runs very well and is balanced. I REALLY don't want to mess...

We went for a 70 mile drive yesterday to a carshow and a recurring problem became MUCH worse! With our crappy fuel my 13:1 340 did not like the drive at all!!!! I guess it is time to take it out and make it more street friendly. The problem with this is that I LOVE the way it sounds and works...

My 340 has learnt a new trick that I am NOT liking. It smokes while running and REALLY smokes when I get after it. I am going to do a compression test and leakdown test. Any thoughts as to what it might be. Both banks are smoking, but one worse than the other. I thought it might be valve seals...

I have a chance to get a Holley 650 double pumper but I am not sure if it will work ok on my 340. I have a 340 with 13:1 pistons, purple shaft cam and a performer rpm intake. As far as I can see the convertor is stock which is what worries me. I am running 355 gears. What can I expect if I try...

Just wondering if there is any such thing as a valve seal that is better than the stock ones? I need to change mine and was wondering what would be the best way to go? Thanks for your input

I am going to put a 90 degree adapter on my 340 and was wondering what the torque specs are so I do not break off the bolt. Thanks for your input!

A buddy of mine was talking to a local engine builder and was told that they had a Mopar small block that they had built many years ago for a dragster they had. They took a 340 block, put a 360 crank in it with 340 rods and pistons. Also they bored the 340 out 60 over. They had to machine the...

I have a chance to buy a 340 forged crank from a local engine builder that I know. This is a standard crank that will need to be turned as it has been sitting for quite a few years. Because I know the guy I do not want to screw him over but I also do not want to pay too much for it.