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I have a Pontiac engine (in a car) with Edelbrock heads on it. Without removing the heads, I'm trying to figure out what block this is...
Block casting date code is I108 (September 10th, 1968, which makes it a block for a 1969 production car).
Casting number is 9792968, which can be a '69 428 or a '69 Ram Air V 400
Block ID code stamped into the front of the block is "XP," which would designate it as a Ram Air IV 400. There is no indication or marking to indicate that it has been altered. This does not jive with the casting number.
I don't want to remove the heads to check the bore diameter. Has anyone had actual and factual experience with this ID code/casting number combo and can say for sure what this is..?
Thanks!!
Lars
Block casting date code is I108 (September 10th, 1968, which makes it a block for a 1969 production car).
Casting number is 9792968, which can be a '69 428 or a '69 Ram Air V 400
Block ID code stamped into the front of the block is "XP," which would designate it as a Ram Air IV 400. There is no indication or marking to indicate that it has been altered. This does not jive with the casting number.
I don't want to remove the heads to check the bore diameter. Has anyone had actual and factual experience with this ID code/casting number combo and can say for sure what this is..?
Thanks!!
Lars