ANything around a .590 lift 240up to 248 duration @.50 witha 112 center.

then what, a stock 454 and 502 is 4.00 inch i used a 4.25 inch with a 250 long rod and a 60 overbore

I was agreeing with ya. Have a happy new year.

ok thanks i was not sure what you ment i know the merc. crank for the 496 is a 4 3/8 stroke with a smaller bore, i thank .

Are you kidding me on that.

John

I always thought it was the regular 4.25x4.310 but I have never taken 1 apart either. I know you can't take the genV and VI 502 blocks to a 4.375 crank, so I wonder why you would be able to do this with the 454 block.

Who knows. My 496's are built like yours. I havn't run them yet because I don't have anything to put them in right now they are collecting dust.

Happy new year. I am on my way out in a bit.

Probably a pretty big cam, but it is not impossible

When all else is equal there is no replacement for displacement

The right combonation goes along way.

Agreed. That is why I use 582" engines at every oportunity.

i think 540 s is the way to go ohio crank & dyna flow short blocks both about 4100.00