My 78’ Pontiac GP/SJ 454 build
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Stick that camera in the spark plug hole and I bet you find a flat top piston. So a head like the 100-110 cc Edelbrock will be a big help for compression. The heads like has been said are nothing special. They are for a truck. The block, at least the majority of the 445's I have done were 4 bolt blocks so you may have lucked out there. Not that a 2 bolt is of any concern in this application.
Is there any truth that if the block has a HP stamped in block above the oil filter it could be a 4 bolt main block? Or do you pretty much have to pull the pan and inspect? I guess I could drain oil and stick the bore scope up in the drain hole.
I’m not concerned about those heads, I planned on a set of aluminum heads from the start.😉 it looking like I could have a four bolt main block, now that’s awesome!😆
The stampings are hit or miss. Some 4 bolt blocks had a large oil port by the filter for a cooler. Otherwise no tell tale sign I am aware of.
Would that large port have a big plug screwed into to block flush? If so this block has it, I seen it and was wondering what it was for?
This was a real big plug in the block, not like a frost plug. I thought it kind odd that it was there.
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