[nas t eh]

Originally Posted by caddor38

Geez, now I know why Biden became president.

Insults and politics will not help you make your case.

Some of the guys helping you have 40+ years buying and selling Pontiac parts. You spent an hour on the internet to find bad information, and are using it to make your case.

Do you understand that there is a big difference between a 1970 455HO and a 1971 455HO. It’s about the same difference as the one between a RA3 and a RA4.

But your block as identified by the vin didn’t even come out of a car with a 1971 455HO as an option. So what are you hoping to accomplish, no one here is going to agree with your false premise.

[FASTASSBIRD]

Originally Posted by nas t eh

Insults and politics will not help you make your case.

Some of the guys helping you have 40+ years buying and selling Pontiac parts. You spent an hour on the internet to find bad information, and are using it to make your case.

Do you understand that there is a big difference between a 1970 455HO and a 1971 455HO. It’s about the same difference as the one between a RA3 and a RA4.

But your block as identified by the vin didn’t even come out of a car with a 1971 455HO as an option. So what are you hoping to accomplish, no one here is going to agree with your false premise.

This is arguably the most thought out response. (No offense to the other guys who had great responses).

The “YC” is the ENGINE APPLICATION code. Could it have mistakenly found it’s way into a HO car? Sure anything can happen on the line. More likely the application code was misstamped however then a complete incorrect block used. However this makes the YC coded block really only valuable to the original car or to someone who needs a 4 bolt main block. All models had application codes specifically (usually YS comes to mind.) to their line. That code determines the engine, the trans, heads, cam, etc. so knowing YC application ISN’T no matter how you cut it an HO code, we can safely assume it isn’t a HO block, or at least a correctly coded block. When guys open their hood it’s that code most enthusiasts look for, not the casting number or date code. It doesn’t take long in 52 years to swap a set of 4 bolt caps from a 421 or a 428, the 428 being a fairly common block so it’s also possible in 52 years that someone made themselves a 4 bolt block. Did it myself with a 69 428. And before anyone says anything I used ProGram billet mains lol so no one is gonna make the claim it’s original.
Lastly. Your claim of an hour spent searching, well I spent 5 minutes searching Joe Biden and found numerous sites saying how great he is. Guess that means he’s a great President? This isn’t a political forum nor do I agree so I’ll bring it back to cars. I can find misinformation for years on the internet that misinformation gets processed by guys who don’t know better and assume because they spent an hour trying to look for it and they found that it MUST be true. It perpetuates the cycle. It’s no different then the ram air casting heads for 70. One guy says he has 13’s and now 20 percent of the guys who aren’t open minded enough to study learn and take advice from guys in this hobby a HELL of a lot longer (some of em long enough to have bought some of these cars new) then the person trying to learn, sell, trade, collect. This site is full of guys who can spot the wrong shade of phosphate coating on bolts six states away., you might spend an hour researching on THIS site. Just my opinion.