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The adjustment should leave the pedal at the stop, the spring on the fork assists. Pedal could be too low to get full release of the pressure plate. If the pedal can flop around and move up, especially if there's no spring on the fork, the rod could pop out of the fork.

I am a big believer in Sonic testing, however unless doing yourself, and even then you are likely at the most only measuring say 10% of the bore on each cyl. Is it better than nothing, yes of course. Will it show a bad/weak/thin spot, but only if you are measuring that spot. High end testing...

Maybe, it seems to me, that is like expecting two rifle bullets to take the exact same path to achieve greater penetration, not likely. Of course, if that is/was their only option, so be it. My idea is mainly for two different optimized munitions with different tasks to better achive the...

No problem at all. I have 3 cars of my cars that are +.060 with no issues and a few other vehicles that have since been sold over the years. One has over 65,000 on it so far. All we're sonic checked before built.

I think that's basically what they did in Iran. Dropped a couple. Big boom. Drop a couple more down the same hole in case of mole men.

So, every weapon has it's limits. Current state of the art for US in bunker busting is the GBU-57, in the news lately. Reportedly it is being replaced by a more advanced/accurate munition in the works, powered and able to hit a target within 2.8m? I wonder if or why not a 2-stage solution is...

Let’s hope this isn’t a legendary failure lol I did watch their videos though … Wish me luck…..

TTI headers fit nice. Haven't used Dougs, but hear good things about them. I would avoid the Hooker 2" primary headers, but the 1-7/8" are OK. Been a long time (1990's) since I tryed some of the cheaper brands, like Blackjack and Headman, because of low quality.

should be fine. Sonic check the bores will give you more information.

Manifolds are fool proof and low maintenance, and the 73's will fit.

I have one .060 that's been together for 30 years. Works great!

This looks like a John Petrie paint scheme. John raced and hosted Performance Clinics for Chrysler Canada.

Wow...that is quite a "Needle in the Haystack" wish..but stranger things have happened. I would just try to get a 1970 "440" and be happy with that. Good luck sir!

Thanks Tom...yeah, something to consider for certain!

Yup, good info haywire 440...Thanks! :thumbsup:

The good one was also pressure tested and passed.

Thanks J...going to the shop in Hesperia CA this weekend (hopefully) Pettis engineering...have them Sonic check and magna flux etc. So...as I have always heard "too thin" on the walls and overheating etc. I will debunk that . Thanks

Why not sonic check it? Come to think of it I haven’t see any discussion on that test in a long time. I had 3 440 blocks checked years ago and one was good, the other 2 needed sleeves. They all are in dry storage.

Thanks on this...