New crate 454
Last month I broke the crank in my 1988 Winnebago Super Chief. It had only 57,000 miles on it. I located a GM crate engine 454. I took my time and installed the engine piece by piece. I went with a n...
Forum Discussion
dougsee3 wrote:
This may not be the problem but something you can chase if all else fails. Not knowing where and how the crate motor was put together? The link talks of the wrong head gaskets causing overheating depending on the engine block used. Had this problem with a 454 years ago do not remember all the details.
http://www.felpro-only.com/tec_notes/Inside_Sealing-Chevy%20BB.pdf
Good point. As the Gen IV 454 transitioned to the V and VI versions, changes were made in the heads and gaskets. IIRC, the IV and VI can interchange, but not the V. This goes for the heads, too. But I have been assuming that the OP "crate motor' is an OEM product, not simply a rebuild so a crate. So gaskets/heads/block match should not be an issue. I hope that the OP posts the solution when it is found.
