Thread: BB question?Dump Truck block

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Originally Posted by Gusaroo

I just got a hold of a 454 from a tow truck, how do you tell if its a tall deck or not? The block number id 14015445 and the heads are 346236... I decoded these but the info I found was not very helpful.

they never made a454 tall deck it is a78-90 454 the way i check them is if you look it the block deck were the head bolts down on a car / small truck block 9.800 block were the water pump bolt on top of pump this all most flat to block deck .100 or so. on a tall deck is about 300 of a inch taller at this point and there is more things but that is the fast way to check the deck is 10.200 on the tall deck and short deck is 9.800

Gusaroo, the tall decks were either 366 or 427's. John