Tall block help

Hello: I just ****terd my 427 built using a 454 block and a 396 crank. Now I have to put another motor together in the next week what I have in the garage is a tall block 427 over .060 fresh bore aligned bored and so on and I have a crowler 4.0 crank and set of childs and albert 6.135 rods is there a good piston option I will be running a blower and need around 9.0 cr thanks.

 

Wont you need the 6.535 (.400 longer) rods with the taller deck? Longer distributor too, unless its a special intake.

 

Well stock the tall deck 427 was 8.0:1 wich is perfect for a blower motor. I don't know whare you will off thre shelf pistons if you change the stroke, ( I don't recall off the top of my head what stock stroke is on a 427 ) but JE Pistons will turn out anything that you need and have a pretty quick turnaround of they don't already have them on the shelf. They may have them on the shelf the tall deck 427 is or has been a pretty popular block for blower motors.

You will probably need either a distributer or mag for a tall deck or one with a slip collar as well as an oddball intake or spacers.

 

...and manifold spacers.

Stock 427 stroke is 3.76

 

The 427 we built for our bracket car was a tall deck. We used the .400 longer rod to match the .400 raised deck height. IF you have a tall deck take advantage of the stroker power those can make. Our block went .100 over (with concrete) with a .250 stroker crank making 505ci. Max torq and hp(820) was all in by 6100rpm. I would call J & E pistons and ask for the details. They do make a taller distributor for tall decks, and thats the one that requires a collar if used in a low deck.

 

Thanks Squirrel. I canot remember stroks for anything any more, I usually consult one of my not books or a manuel.

The stroked engine then is going to require a relocated wristpin or a stroker piston if you prefer. I would contact a catalog speed shops tech line to see ahat is available and if you find no joy you will need to go to a speciatly supplier like JE or keith black or the like.

 

The deck difference. (.400 ) has to be made up with rods. 6.535. No pistons are commonly stocked for that tall deck, 4.00 stroke, stock rod combination.