M-1 single plane intake on a 440 [ not a stroker ].

Bewy said
Thanks for the replies. Would still welcome other responses.
I am thinking of making a spacer, also called a 'Turtle' for the plenum floor to soak up some plenum volume. This engine will not see the upper rpm range that this intake is capable of, so idea is try & shift some of the unneeded top end power to the lower end.
Thoughts, ideas? Anybody tried it?
Click to expand...

not on an m1 , but I put a turtle , (bought from jegs) in a weiand team G , got the runner flow down to around 25ish or less, which is excellant for that intake ,
(read hiughs engines intake tests) , they are terrible in stock form . Seat of the pants , cant tell any diff. between it and a debuggard victor on my 505 .