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I did pull the valve covers and spin it over to make sure the valve train was working. Everything looks like it is moving correctly. I didn't measure anything with a dial indicator. Guess I will have to finish the leak down test one of these days.

I guess I didn't think of checking the rest of the cylinders since #7 is the dead cylinder. I did the compression test and leak down test to confirm that it wasn't an ignition problem. Even if I finish the tests I will have to pull the heads regardless right? Is there any way to remedy it...

Finally got around to doing a compression test and leak down test. Compression is good, checked a few cylinders. Leak down test not so good. It is way off the chart on #7 cylinder. Didn't bother checking other cylinders. Next move is to pull the heads I guess. I didn't do any work to the heads...

Sorry guys, I have been busy and haven't had time to monkey with it lately. I am going to check compression and tear the carb apart fora good cleaning when I get time. Thanks again for the suggestions so far.

I am going to borrow a compression gauge tomorrow. I traced all of the wires to make sure none of them were swapped.

I finally got time to dig into it today. After running on high idle for 3-4 minutes I checked headder temps with IR heat gun right at the head. #1 259, #2 248, #3 290, #4 220, #5 165, #6 415, #7 95, #8 301. So #7 is for sure dead, I swapped plugs with #5 and no change. I swapped wires with #5...

By the way, the carb I have now is an edelbrock 1405 model which is only 600cfm. I plan on getting a 750 but wanted to work some bugs out first. It has been running good with the 600 so far.

Hey guys, sorry I haven't checked in for a couple days. I didn't get a chance to work on it yet, it has been raining since Saturday. The truck has been sitting for 2 years. I would start it occasionally to keep the oil flowing in the motor. When I finally got it on the road, a couple weeks ago...

Yesterday I drove my 67 D200 truck to my shop in the morning and it was running great. I fired it up to go home and noticed it was running rough. It sounds like it is not firing on all cylinders. It is a fresh rebuild to stock specs. The motor has about 100 miles on it now. It is a 67 383...

Thanks guys for the responses. I will check to see if the 440 crank is cast or forged. I will get the B&M flex plate if needed. I probably won't get around to doing the swap until spring but I want to make sure I have everything figured out so I can get it done in a weekend without any surprises.

My wood hauling truck has a 1965 383 engine with 727 Tranny in it now but the motor is getting weak. I have a 440 from a motor home that is either a 1975 or 76 that I want to swap out. Will the torque converter from the 383 work with the 440 or are they balanced different? I just had the Tranny...

I have the carb adapter for it. Thanks guys. I appreciate the responses.

I have a Edelbrock 1406 600cfm carb. I was wondering if it will be ok for my motor. The motor is a 67 383 out of my 67 D200 camper special with auto tranny. I honed the cylinders, reringed the pistons, put new bearings in, and put a cast iron 4bbl intake on it, the heads are 516 castings, the...

Why don't you make a spacer yourself? I had the same problem with the 360 in my duster so I made a spacer out of 1/4" plate for the crank pulley and it worked great. Hasn't thrown a belt yet and it hit some high RPMs.

This might be a dumb question, do I need to have hardened seats put in the 516 heads? If that is so then I would need new valves also right? Is it worth sticking the money into the 516 heads?

Thanks for the info. I should have mentioned the truck has 3.55 gears and stock converter. I have headders on it already. I am going to look into a lunati cam. I was thinking about buying an Edelbrock carb. Maybe a carb and intake combo? What size carb would I need? I am guessing around 650 or...

I pulled the 383 out of my 67 D200 to freshen it up. I am planning on leaving the bottom end stock and putting new bearings and rings in it. The heads are the 516 castings. I plan on swapping the 2bbl intake for a 4bbl, maybe a cast iron intake. I am thinking of going with the xe268H cam...