Couldn't find a place for this

[NickP]

http://www.enginelabs.com/news/quick-ref-small-block-chevy-cylinder-head-casting-numbers/

[chevynut]

Seems like the library would be a good place.

[ilike55s]

Hey Nick,,,that's some good reading. I had always used a list from Mor-tec that I downloaded years ago that was pretty good but last time I looked, was no longer available.
I noticed something that "may" be amiss. On the 12480005 heads, it states these aluminum LS type were ,,,,38Cc chambers???? WOW, talk about some quench,,,

[5Clint7]

Great find Nick.

[chevynut]

I noticed something that "may" be amiss. On the 12480005 heads, it states these aluminum LS type were ,,,,38Cc chambers???? WOW, talk about some quench,,,

I don't know much about heads, but if it's wrong it's not a big surprise. That's the problem with a lot of these sites....bad information. There is a site that lists widths of rearends from various cars that has all of the C4 Corvette rearend widths wrong. But some people think it's gospel because it's on the internet. How can you trust the rest of the information on it? A typo is one thing, but this one is no typo.

[carls 56 (RIP 11/24/2021)]

thanks for info nick.

[NickP]

I don't know much about heads, but if it's wrong it's not a big surprise. That's the problem with a lot of these sites....bad information. There is a site that lists widths of rearends from various cars that has all of the C4 Corvette rearend widths wrong. But some people think it's gospel because it's on the internet. How can you trust the rest of the information on it? A typo is one thing, but this one is no typo.

I agree, I never use the word of the list in that manner, more of a guide I guess. I think the issue with IRS units is the method of measurement. Doubtful they take the time to remove the springs to allow the suspension to flatten out. About the only true way would to measure each piece; center to center of the carrier at the universal joint, center to center of the half shafts and center to flange on the knuckle and do the math. Of course, measuring some of the parts without the aid of a CMM or a FARRO Arm will be a toughie.

[chevynut]

Nick, I have removed the spring, set the halfshafts level, and put straightedges on the axle flanges. That's probably close enough for what we do.

[NickP]

Yup.

[chevynut]

Seems like the library would be a good place.

I just noticed that you DID put it in the library. LOL! Must be tired. Or old. Or Both.

[56-210Sedan]

This is what i have been using and it stays in tune with what Motec had http://forums.corvetteforum.com/c3-tech-performance/2916259-mortec-is-gone-get-your-chevy-casting-s-while-there-hot.html and here is the Mortec

Not sure how to get out of the blue line now there are two links in this mess

[56-210Sedan]

OK sorry not sure what in heck just happened in that last thread but here is the first one i tried to post http://forums.corvetteforum.com/c3-t...there-hot.html

[Rick_L]

I did see a couple of possible problems or things that might need clarification in the link. I saw some combustion chamber cc's that didn't make sense. Like 70 and 76 cc 283 heads. And it wasn't well organized. But you could fix that by loading it in Excel and sorting it.

Like any of the lists, when they all agree they are probably correct. Or 3 out of 4 tells you something, etc. So that makes any list useful in some way. Use judgment or check it out when they don't.