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The right length for checking cylinder ridge !

Just a bad picture,crank, bearing and rod are fine. Going to end my curiosity and just build a motor

Agreed, it was just a curiosity thing. Bearings appear to have the old Federal Mogul logo on them.

Yep, my guess is that something happened that spun a couple of bearings and crank was turned and the bottom end was rebuilt with using the same stock pistons. Not actually a deal one way or the other, just made me wonder if the original owner gave the guy I bought it from "never been touched"...

The 73 RR 340 that I purchased had about 110,000 miles on it. Seller told me that the original owner told him the engine was untouched since purchased new. It is a #matching block to the car. Well, the copper rods I posted about earlier were obviously factory, but I found the engine to have...

Searched FABO and found lots of differing reasons, most of which match 69Bee's explanation. However I'm still curious about the + in the circle that's not on the other two rods. The consensus at FABO seems to be they are fine to use.

I've rebuilt more than a few big and small blocks and never seen copper color connecting rods. Tearing down my 1973 340 to go to the machine shop I found that #3,6 and 7 connecting rods are copper colored. The #3 and #7 rods have no markings on the machined pad while the #6 rod has what appears...

Thanks, after 30+ years out of the engine building hobby I'm sure I am overthinking it! Last engine I built was during the AOL dial-up days and online research didn't exist. Just went to the local speed shop and took their advice. What threw me was when the tech guy specified a 1981 truck or van...

Well, the call to Melling tech support was pretty useless. The tech said they use the Chrysler specs on the SPD-22. I told him that with all the years and models of 340 and 360 they show the cam to cover (1970-1981) I was sure Chrysler used a different cam in a 1970 340 Challenger vs. a 1981 360...

That is one of the reasons I am looking at a Melling cam kit, haven't seen many horror stories about them compared with some other brands.

Bet that was a pain to drive on the street!

Looks like Melling says the MTD cam requires different valve springs so possibly the SPD can use the stock springs. Decisions, decisions, guess I may be calling Melling tomorrow.

Interesting. The Melling website shows the SPD-22 as a stock?? replacement for anything from 1970 through 1981 small blocks. Obviously there were lots of different cams that Chrysler used during that time!

Thanks Cranky. Back in the old days I would just grab a bigger Purple Shaft, throw it in a '69 or '70 motor and be really happy with it. Times have changed!

Thanks, that is what I am thinking as well.

OK gang, I haven't built a motor in 30 years. And all the motors I built back then were for street/strip. I always ran Mopar Performance cams. Now I have a 1973 340 in a Road Runner I'm currently restoring and I plan on using it for cruising and possible road trips. This car won't be visiting...

Wow, Jim I can say the same. Seems like we make it to Elizabeth a couple of times a year but never end up going further west. However.....we might be coming to Parker this Friday to pick up my wife's daughter. Will you be around on Friday afternoon? A couple of months ago we went to a car show...

Going through the 340 in my 1973 Road Runner brought up a silly question. I was told this motor had never been touched and by everything I found that seems true. I always thought the breather and pcv grommets were installed at the factory after the valve covers were painted. And that is how I...

Really good video on this subject