Offshoreonly.com - block casting #'s

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Offshoreonly.com (https://www.offshoreonly.com/forums/)

- General Q & A (https://www.offshoreonly.com/forums/general-q-20/)

- - block casting #'s (https://www.offshoreonly.com/forums/general-q/256413-block-casting-s.html)

DMOORE

07-18-2011 11:44 AM

Quote:

Originally Posted by westdanny (Post 3454220)

I hav the same engine and it is stamped as a HI PER PASS whch means it is a high performance passenger. I can not find out what this engine is. Thanks, for any help, Dan

WE just sold a block with the same stamping. It was a 2 bolt 454.

Darrell.

jeffswav

07-18-2011 06:17 PM

Quote:

Originally Posted by DMOORE (Post 3455461)

WE just sold a block with the same stamping. It was a 2 bolt 454.

Darrell.

I just posted the data from mortec, some were 2 and some were 4. Why they did that is beyond me.......:angry-smiley-038:

DMOORE

07-18-2011 08:23 PM

Quote:

Originally Posted by jeffswav (Post 3455889)

I just posted the data from mortec, some were 2 and some were 4. Why they did that is beyond me.......:angry-smiley-038:

I never understood that one either. The first time I pulled a pan off one marked High per pass, and seen a 2 bolt, I was dumbfounded. One would think High performance would at least include a 4 bolt.

Darrell.

DMOORE

07-18-2011 08:26 PM

BTW... what would it cost to have a set of splayed steel caps installed on a 2 bolt block.
I do believe that the high per pass blocks do at least have the high nickle content.

BillK

08-26-2025 05:52 PM

Quote:

Originally Posted by jeffswav (Post 3455889)

I just posted the data from mortec, some were 2 and some were 4. Why they did that is beyond me.......:angry-smiley-038:

The blocks are all basically the same so they have the same casting number. They just machined some for 2 bolt and some for 4 bolt. No different than all of the GM Small Blocks for 50 years.

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