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How was the quality of your new replacement base plates from Holley? I got a set to replace my original 69 carb plates. I was so disappointed in the quality. I'm still using the originals and set the new Holley plates in my spare Holley parts bin. This was probable 2010-ish

Not on the 69, A12 cars.

Yep. If you have a set of 2266s, with some planning you can get its 1.99 compression height to work out okay. It is a replacement for the 67 HP motors and will get you in the upper 9s with 915 heads and a 0.022 gasket. But what usually happened was they got matched up with 906 heads done on...

All good. Looking back, I came off a little strong. My apologies. Sealed Power. 1990 was probably about the last you could get these.

Suggesting I cannot read a part number and a caliper? Does this help you. I purposefully purchased these pistons in 1990. They have long since been unavailable. They sit 0.048" in the hole. I have the original bill of sale if you'd like to see it.

Yes. But I used calipers with them still mounted on the rods. So my measurement could be off a little.

No. 2286P I looked at some info regarding the "original piston" compression height. Says 2.031". But I did not measure it myself, that info is from someone else, but a trustworthy source, FWIW.

Do you want the exact number? Not sure. From memory, it's close to 2.03. Like 2.029, or 2.032 I have the original NHRA approved Speed Pro forged pistons. It measures 2.034 with calipers. It is the same piston as the 68 and 69 4 bbl piston.