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It's not a simple solution. It depends. What's your open & closed valve spring pressure? Do the lifters have the proper profile on the bottom? Does the cam lobe have the proper taper? The cam core has to be a good one, not soft Chinese junk.
As noted above, we need to know if you're working on a 489 carrier? The other two "popular" carriers do not have a crush sleeve. No way to tell if someone was inside any carrier without opening it up. Many guys note the torque when loosening the yoke and add go right back or add a few to the...
It depends on what type it is. The thermostatic type varies with temp. These have a bi-metal coil on the front. The straight viscous ones don't. Both types should be fairly stiff when cold. Thermostatic spins a little more freely when roasting hot. If they spin really freely, it's time to...
They had a power valve check valve kit. Split the throttle body from the main, drill w a small included bit w a stop colar and install a check ball & retainer.
https://www.holley.com/products/tools/carburetor_tools/parts/125-500
https://www.summitracing.com/parts/hly-125-500
3310's had 72 or...
I believe the most prevalent answer would be:
Camshaft, valve springs, exhaust manifold, carb, air cleaner. Most everything got 906 heads at one point in the late 60's.
Probably not. Why would they be disappointed with something they designed ? That's the way they wanted it. The mind set of the time was sales. Even in the late 60's early 70's there was a considerable portion of the population that was resistant to high performance culture. Our parents and...
I'd grind it out to the point of that crack at least. It WILL move with temperature change, likely a problem if it's not checked at least. The crack is there, you have nothing to lose by grinding it to the end.
Tony just got it from some vendor, maybe same as Bouchellon or whoever. It's not like there's four or five different machines stamping out repo Mopar pulleys. Heck, there's likely only one. In China. I'll agree, he could refund or send another one. Then he'll have to go to his distributor...