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You guys need to just build stuff. Dyno's and theoretical stuff can or can not help. A guy I know was racing dirt track with a 318 and 340 X heads, had the fastest car on the track. That test is questionable at best. My experience is the same as 318willrun, 340/360 heads with any either 1.88...

Is there a model number stamped on the side?

No problem. It does make a big difference, as you know.

We always laughed at Chevrolet hp numbers and numbers matching cars. A Chevrolet engine was not a long lived engine. Corvette guys were even more clueless. How does one engine rate 375 hp and the exact same engine rate 450 hp in a different car? I'll spare you guys the stories.

What gears in the rear?

Look for a 65 B-Body and be done. There is one here but I have not had the time to pull it.

Nice! My dad had one. Great little cars.

The 68-69 383 suspensions used a different pitman and idler arms. Firm Feel should have them. Firmfeel Mopar Suspension and Steering

Another thing most /6 guys don't realize is that those engines used to get major tune ups. That would include adjusting the valves hot and running. Many times it would make a noticeable difference in smoothness, power, and sound.

That is the beauty of an auction, all you need is 2 people with deep pockets that really want something.

That would not be hard to do. I think they only made about 3,000 a year of Darts and the same for Barracudas.

I saw one that never made it off the car transport brand new.

Oh yeah, it would, not stock. Fastest car around. Beat all comers. "71" 340, 3 speed manual. I bought the short block for a friend after he dropped an intake head and blew out the cylinder, the heads were not for sale.

It was, it was in a 64 Barracuda with a 4 speed and 3.23 sure grip. Like Vixen, most people can not conceive how well a slant can run.

LOL, He was not normal. We worked together in R & D. He told me about modifying an UZI to use 12 gage shells In Nam. He said all 396's would always puff blue smoke out of that one side. Another friend had a 375 hp 396 in a 68 or 69 Camaro with a 4 speed. It was always in the shop, but he...

I only built one /6 for myself, long gone, but it ran and sounded very good. 170 cu in .060 milled head, 268 duration MP cam, 340 valve springs, and a stock 2 barrel carb and intake. I used one side of the 273 custom duals with a turbo muffler and a custom head pipe.

I had a friend who seriously raced them, but there were very few stock parts (needle roller main bearings) and they did not live long if seriously beat on. 396's had cooling problems and would cook the rings on one the the rear cylinders. He told me which one but I forget which one.

Not in my experience. A 340 Duster would take them every time.

I guess you are not the only one, LOL. The only Chevy big block I liked was the 427. But I'd take a BB Mopar or Ford any day.

The sharpest guy I worked for did that to maybe 2 or 3 slant 6s when I worked with him back in the mid 70's.

I remember those when they were new. I always hated them. I lot of them would crab walk down the road.

You left out a couple steps. First, trickle a pint or quart of ATF down the carb while it is running. Rev the engine to keep it running when adding ATF or water. Second, drive around the block to loosen up the carbon. Then you trickle 10 to 16 oz (coke bottle) of water down the carb while it...

I probably have a spare set of 440 rods plus a set of NOS 440 rods. I could probably come over and tell you what is going on.

I have run early A 273 exhaust manifolds with “72” 340 “J” heads. I ported the exhaust manifolds and used 273 gaskets with gold RTV. It worked fine, no leaks. What head castings are you running?

That is correct. Just one K-frame for 66-64 A-Bodies

What is the number on the bottom of the intake?

I only use the non greasable Dana heavy duty u-joints. My drive shaft guy swears by them and the driveshaft balances out easier.

Go 273 or 5.2. Magnum intake valves are too large for a 273. Nothing wrong with early 273 heads, with port and bowl clean up they can flow about like small valve "J" heads and are closed chambers so you can get quench.

Wow! Hard to imagine...

I have tried most every type of clutch. The very best was an original 10.95 440 clutch and pressure plate, but it was too stiff and broke things. I'm afraid my best 273 iteration was way over 300 hp at 6,500 rpm. I do have a McLeod 105 BB/Long setup to try with next engine. Not a fan of...